blocks|key|1288260|text|经过几个小时的努力，系统恢复，注册，注销周期和一个晚上的睡眠，我设法找出了问题。原来，该项目文件包含以下行：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1288261|Object={831FDD16-0C5C-11D2-A9FC-0000F8754DA1}#2.0#0;+MSCOMCTL.OCX|code-block|syntax|javascript|1288262|版本信息"2.0“似乎是没有加载的原因。在记事本中将其改为"2.1“解决了以下问题：|1288263|Object={831FDD16-0C5C-11D2-A9FC-0000F8754DA1}#2.1#0;+MSCOMCTL.OCX|1288264|因此，在类似的"OCX无法加载“的情况下，一种可能的解决方法是启动一个新项目。将控件放在其中一个窗体上，并使用记事本检查vbp文件，以查看它预期的版本。|1288265|或一个容易得多的方法：|offset|length|style|BOLD|1288266|(我在Bob下面的宝贵评论之后添加了这一节)|1288267|您可以在记事本中打开VBP项目文件，并找到阻止VB6自动将项目升级到2.1并将其删除的讨厌行：|1288268|NoControlUpgrade=1|1288269|entityMap^0|0|0|0|0|0|0|B|0|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|11|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|12|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|13|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|14|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|15|8|@$O|16|P|17|Q|R]]|9|@]|A|$]]|$1|S|3|T|5|6|7|18|8|@]|9|@]|A|$]]|$1|U|3|V|5|6|7|19|8|@]|9|@]|A|$]]|$1|W|3|X|5|D|7|1A|8|@]|9|@]|A|$E|F]]|$1|Y|3|-4|5|6|7|1B|8|@]|9|@]|A|$]]]|Z|$]]

After hours of effort, system restore, register, unregister cycles and a night's sleep I have managed to pinpoint the problem. It turns out that the project file contains the below line:

<pre><code>Object={831FDD16-0C5C-11D2-A9FC-0000F8754DA1}#2.0#0; MSCOMCTL.OCX
</code></pre>

The version information "2.0" it seems was the reason of not loading. Changing it to "2.1" in notepad solved the problem:

<pre><code>Object={831FDD16-0C5C-11D2-A9FC-0000F8754DA1}#2.1#0; MSCOMCTL.OCX
</code></pre>

So in a similar "OCX could not be loaded" situation one possible way of resolution is to start a new project. Put the control on one of the forms and check the vbp file with notepad to see what version it is expecting.

<hr>

OR A MUCH EASIER METHOD: 

(I have added this section after Bob's valuable comment below)

You can open your VBP project file in Notepad and find the nasty line that is preventing VB6 to upgrade the project automatically to 2.1 and remove it:

<pre><code>NoControlUpgrade=1
</code></pre>

blocks|key|874436|text|要解决这个问题：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|874437|使用以下代码创建一个批处理文件：|874438|@echo+off
reg+query+"HKEY_CLASSES_ROOT\typelib\{831FDD16-0C5C-11D2-A9FC-0000F8754DA1}\2.1"
if+%25errorlevel%25==0+GOTO+DELREGKEY
if+%25errorlevel%25==1+GOTO+REGISTEROCX

:DELREGKEY
reg+delete+hkcr\typelib\{831FDD16-0C5C-11D2-A9FC-0000F8754DA1}\2.0+/f

:REGISTEROCX
if+exist+%25systemroot%25\SysWOW64\cscript.exe+goto+64+
%25systemroot%25\system32\regsvr32+/u+mscomctl.ocx+/s
%25systemroot%25\system32\regsvr32+mscomctl.ocx+/s
exit

:64+
%25systemroot%25\sysWOW64\regsvr32+/u+mscomctl.ocx+/s
%25systemroot%25\sysWOW64\regsvr32+mscomctl.ocx+/s
exit|code-block|syntax|javascript|874439|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

To Fix the Problem:

Make a Batch file with the following code:

<pre><code>@echo off
reg query "HKEY_CLASSES_ROOT\typelib\{831FDD16-0C5C-11D2-A9FC-0000F8754DA1}\2.1"
if %errorlevel%==0 GOTO DELREGKEY
if %errorlevel%==1 GOTO REGISTEROCX

:DELREGKEY
reg delete hkcr\typelib\{831FDD16-0C5C-11D2-A9FC-0000F8754DA1}\2.0 /f

:REGISTEROCX
if exist %systemroot%\SysWOW64\cscript.exe goto 64 
%systemroot%\system32\regsvr32 /u mscomctl.ocx /s
%systemroot%\system32\regsvr32 mscomctl.ocx /s
exit

:64 
%systemroot%\sysWOW64\regsvr32 /u mscomctl.ocx /s
%systemroot%\sysWOW64\regsvr32 mscomctl.ocx /s
exit
</code></pre>

blocks|key|876398|text|在一些计算机上，我发现MSCOMCTL.OCX的"2.0“版本已经添加到ActiveX+KillBits列表中，因此该控件将不允许加载或运行--甚至在设计视图中。更新到"2.1“版本将解决这一问题，这是推荐的解决方案。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|876399|在关键情况下，您必须“立即”运行一个程序，或者您无法访问源代码，或者在一个大型模块化项目中使用该控件400次，您可以使用“大锤子”方法并更新注册表以重新启用该控件：|876400|**|876401|警告:以错误的方式编辑Windows注册表可能会给计算机带来很大的麻烦。如果你不知道你在做什么，那就别管它了，或者在你开始之前接受一些教育。|876402|876403|清除KillBit：|876404|blockquote|876405|运行注册表编辑器(regedit.exe或regedt32.exe)|ordered-list-item|876406|在左侧面板中，导航到键HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet+Explorer\ActiveX+Compatibility{BDD1F04B-858B-11D1-B16A-00C0F0283628}|876407|在右侧面板中，双击“兼容性标志”，将值从十六进制0x400+(十进制1024)更改为0，然后单击“确定”。|876408|启动使用"2.0“版本的MSCOMCTL.OCX的应用程序；它应该按设计运行。|876409|ActiveX+KillBits列表旨在为微软提供禁用被认为是安全风险的控件的方法，他们已经设计了一种机制，使得ActiveX+KillBits列表将在看似随机的时间内重新应用于系统，以及安装更新的时间，因此您需要计划重新应用注册表更改。使注册表合并文件工作得很好，但这并不是每次应用程序运行时都想要做的事情，因为它不是一个安静的过程(有一些方法可以使用Windows脚本悄悄地完成，但您必须自己学习)。只有在应用程序请求控件时才会检查KillBit，因此一旦应用程序启动和加载控件，您就不会被重置。|876410|entityMap^0|B|C|0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|13|8|@$9|14|A|15|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|16|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|17|8|@]|D|@]|E|$]]|$1|J|3|K|5|6|7|18|8|@]|D|@]|E|$]]|$1|L|3|I|5|6|7|19|8|@]|D|@]|E|$]]|$1|M|3|N|5|6|7|1A|8|@]|D|@]|E|$]]|$1|O|3|-4|5|P|7|1B|8|@]|D|@]|E|$]]|$1|Q|3|R|5|S|7|1C|8|@]|D|@]|E|$]]|$1|T|3|U|5|S|7|1D|8|@]|D|@]|E|$]]|$1|V|3|W|5|S|7|1E|8|@]|D|@]|E|$]]|$1|X|3|Y|5|S|7|1F|8|@]|D|@]|E|$]]|$1|Z|3|10|5|6|7|1G|8|@]|D|@]|E|$]]|$1|11|3|-4|5|6|7|1H|8|@]|D|@]|E|$]]]|12|$]]

On some computers, I've found that the "2.0" version of <code>MSCOMCTL.OCX</code> has been added to the ActiveX KillBits list, and thus the control won't be allowed to load or run--even in design view. Updating to the "2.1" version will resolve this, and is the recommended solution. 

In critical cases, where you have to run a program "now", or you don't have access to source code, or the control is used 400 times in a large modular project, you can use a "big hammer" method and update the registry to re-enable the control:

** 
WARNING: Editing the Windows Registry in the wrong way can mess up your computer big time. If you're not sure what you're doing, please leave it alone, or get some schooling before you proceed. 
**

The clear the KillBit: 

<blockquote>
 <ol>
 <li>Run Registry Editor (regedit.exe or regedt32.exe) </li>
 <li>In the left-hand panel, navigate to key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX
 Compatibility{BDD1F04B-858B-11D1-B16A-00C0F0283628} </li>
 <li>In the right-hand panel, double-click on “Compatibility Flags”, change the value from Hex 0x400 (Decimal 1024) to 0, then click OK. </li>
 <li>Launch the application that uses the "2.0" version of MSCOMCTL.OCX; it should run as designed.</li>
 </ol>
</blockquote>

The ActiveX KillBits list is intended to give Microsoft the means to disable controls that are deemed to be a security risk, and they've designed the mechanism such that the ActiveX KillBits list will be re-applied to the system at seemingly random times, in addition to when an Update is installed, so you'll need to plan for re-applying the registry change. Making a registry merge file works pretty well, but it's not something you want to do everytime the app runs, because it's not a quiet process (there are ways to do this quietly using Windows Scripting, but you'll have to learn that on your own). The KillBit is checked only when the control is requested by an application, so you're safe from resets once the application launches and loads the control.

blocks|key|1288348|text|使用MSCOMCTL.OCX的VBA宏也存在同样的问题，像"reg/unreg+mscomctl.ocx“这样的解决方案仍未解决的问题使用了上面的Rumi信息。编辑了我的*.dot文件，搜索#2.0#0，将它更改为#2.1#0+->它工作了|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1288349|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Same problem with VBA Macros using MSCOMCTL.OCX.
Problem still unresolved with solutions like "reg/unreg mscomctl.ocx"
Used the Info above of Rumi.
Edited my *.dot file, search for #2.0#0, change it to #2.1#0
--> it worked

blocks|key|1288373|text|最近，我把我所有的源代码放在了一个windows+8+32框上。在现有项目中加载mscomctl.ocx时出现问题。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1288374|我创建了一个新项目并添加了公共控件(all)。保存项目并重新加载它没有问题。|1288375|当您比较项目头(新的还是旧的)时，旧的使用reference=*\blah+blah。我发现用Object={blah}替换它，解决了这个问题。|1288376|entityMap^0|14|C|0|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|O|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|P|8|@]|D|@]|E|$]]|$1|J|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|K|$]]

I recently put all my source on a windows 8 32 box. Had the issues loading <code>mscomctl.ocx</code> with existing projects.

I created a new project and add the common control (all). save the project and reloaded it no problem.

when you compare the project headers new vs old the old one uses reference=*\blah blah. I found removing this a replacing it with the Object={blah} sorted out the problem.

blocks|key|1765479|text|我没有在我的vbp项目中找到NoControlUpgrade=1。相反，我同时在xp和windows7+x64上进行开发。当我将项目从窗口7移到xp时，出现了错误。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1765480|据我所知，这些是不同的：|1765481|Object={831FDD16-0C5C-11D2-A9FC-0000F8754DA1}#2.0#0;+MSCOMCTL.OCX

Object={831FDD16-0C5C-11D2-A9FC-0000F8754DA1}#2.1#0;+MSCOMCTL.OCX|code-block|syntax|javascript|1765482|我只是在vbp文件上将#2,1更改为#2.0，它可以立即运行。这些问题以前都曾发生过，所以希望微软能对它们做出相应的解释和解决。谢谢。|1765483|entityMap^0|E|I|0|0|0|B|4|I|4|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|T|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|U|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|V|8|@$9|W|A|X|B|C]|$9|Y|A|Z|B|C]]|D|@]|E|$]]|$1|O|3|-4|5|6|7|10|8|@]|D|@]|E|$]]]|P|$]]

I do not find <code>NoControlUpgrade=1</code> on my vbp project. 
Instead, I develop on both xp and windows7 x64. When I moved the project from window 7 to xp, the error occurred. 

From what I find out, these are different:

<pre><code>Object={831FDD16-0C5C-11D2-A9FC-0000F8754DA1}#2.0#0; MSCOMCTL.OCX

Object={831FDD16-0C5C-11D2-A9FC-0000F8754DA1}#2.1#0; MSCOMCTL.OCX
</code></pre>

I just changed the <code>#2,1</code> back to <code>#2.0</code> on the vbp file and it can run immediately.
These kind of problems occurred before, so hope Microsoft explain and solve them accordingly.
Thanks.

blocks|key|1765502|text|我使用win7并有同样的问题。今天，我解决了这个问题，通过在我的项目中加载了许多错误，命令在goto+Project=>组件=>+MicrosoftWindowsCommonControl6.0+(SP6)之后继续运行，然后保存该项目(文件使用是c:\windows\syswow64\mscomctl.ocx)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1765503|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I use win7 and has same problem.
Today I solved this problem, through loading with many error with my project just give order to continue after that goto Project=> Component => Microsoft Windows Common Controls 6.0 (SP6) then save the project (file use was c:\windows\syswow64\mscomctl.ocx)

blocks|key|1288452|text|对我来说，这个解决方案很有魅力：http://home.pacific.net.hk/~edx/bin/readmeocx.txt|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1288453|像这样修正这两行：|1288454|Object={F9043C88-F6F2-101A-A3C9-08002B2F49FB}#1.2#0;+COMDLG32.OCX
Object={831FDD16-0C5C-11D2-A9FC-0000F8754DA1}#2.0#0;+MSCOMCTL.OCX|code-block|syntax|javascript|1288455|在文件(.vbp和.frm)中搜索如下行：|1288456|Begin+ComctlLib.ImageList+ILTree
Begin+ComctlLib.StatusBar+StatusBar1+
Begin+ComctlLib.Toolbar+Toolbar1`+|1288457|台词可能是这样的：|1288458|Begin+MSComctlLib.ImageList+ILTree+
Begin+MSComctlLib.StatusBar+StatusBar1
Begin+MSComctlLib.Toolbar+Toolbar1`+|1288459|entityMap|0|LINK|mutability|MUTABLE|url|http://home.pacific.net.hk/~edx/bin/readmeocx.txt^0|G|1D|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@$A|11|B|12|1|13]]|C|$]]|$1|D|3|E|5|6|7|14|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|15|8|@]|9|@]|C|$I|J]]|$1|K|3|L|5|6|7|16|8|@]|9|@]|C|$]]|$1|M|3|N|5|H|7|17|8|@]|9|@]|C|$I|J]]|$1|O|3|P|5|6|7|18|8|@]|9|@]|C|$]]|$1|Q|3|R|5|H|7|19|8|@]|9|@]|C|$I|J]]|$1|S|3|-4|5|6|7|1A|8|@]|9|@]|C|$]]]|T|$U|$5|V|W|X|C|$Y|Z]]]]

For me, this solution worked like a charm:
<a href="http://home.pacific.net.hk/~edx/bin/readmeocx.txt" rel="nofollow">http://home.pacific.net.hk/~edx/bin/readmeocx.txt</a>

Fix these two lines like that:

<pre><code>Object={F9043C88-F6F2-101A-A3C9-08002B2F49FB}#1.2#0; COMDLG32.OCX
Object={831FDD16-0C5C-11D2-A9FC-0000F8754DA1}#2.0#0; MSCOMCTL.OCX
</code></pre>

Search the files (.vbp and .frm) for lines like this:

<pre><code>Begin ComctlLib.ImageList ILTree
Begin ComctlLib.StatusBar StatusBar1 
Begin ComctlLib.Toolbar Toolbar1` 
</code></pre>

The lines may be like this:

<pre><code>Begin MSComctlLib.ImageList ILTree 
Begin MSComctlLib.StatusBar StatusBar1
Begin MSComctlLib.Toolbar Toolbar1` 
</code></pre>

blocks|key|1765585|text|通过在提升的命令提示符中运行以下命令解决了该问题：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1765586|指挥：|1765587|cd+C:\Windows\System32\
regtlib+msdatsrc.tlb|code-block|syntax|javascript|1765588|或|1765589|cd+C:\Windows\SysWOW64\
regtlib+msdatsrc.tlb|1765590|我希望这能帮到你。|1765591|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|T|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|U|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

The problem has been resolved by running the following in elevated command prompt:

command :

<pre><code>cd C:\Windows\System32\
regtlib msdatsrc.tlb
</code></pre>

or

<pre><code>cd C:\Windows\SysWOW64\
regtlib msdatsrc.tlb
</code></pre>

I hope this helps.

blocks|key|874540|text|我遇到了这个问题，并尝试了许多不同的解决方案。他们没有为我工作，虽然我认为这个错误发生有几个不同的原因。我的解决办法是在这里回答这个问题：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|874541|https://stackoverflow.com/a/15785253/2240058|offset|length|874542|如果没有别的东西对你有用的话，那是值得一试的。|874543|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|18|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@$D|Q|E|R|1|S]]|A|$]]|$1|F|3|G|5|6|7|T|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|U|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|C]]]]

I had this problem and tried many different solutions. They didn't work for me although I think this error occurs for a couple of different reasons. My solution is in my answer to this question here:

<a href="https://stackoverflow.com/a/15785253/2240058">https://stackoverflow.com/a/15785253/2240058</a>

Its worth a try if nothing else is working for you.

blocks|key|876488|text|这个问题今天神秘地出现在我面前。我没有做任何Windows更新，所以我不知道原因。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|876489|这修复了它(在提升的命令提示符中)：|876490|regtlibv12.exe+msdatsrc.tlb|876491|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

This problem mysteriously appeared for me today. I hadn't done any Windows updates, so I don't know the cause.

This fixed it (in elevated command prompt):

regtlibv12.exe msdatsrc.tlb

blocks|key|1288543|text|我的解决方案是安装这个VB6修补程序。我上的是Server2008+(32位)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1288544|http://www.microsoft.com/en-us/download/details.aspx?id=10019|offset|length|1288545|2014年我们还在谈论这件事让我很难过..。但它就在这里。:)|1288546|来自puetzk的评论:这些都过时了:你想要使用Microsoft+Visual+Basic+6.0+Service+Pack+6累积更新+(kb957924)。|1288547|entityMap|0|LINK|mutability|MUTABLE|url|1|http://www.microsoft.com/en-us/download/details.aspx?id=7030|2|https://support.microsoft.com/en-us/kb/957924^0|0|0|1P|0|0|0|O|19|1|1Z|8|2|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@$D|W|E|X|1|Y]]|A|$]]|$1|F|3|G|5|6|7|Z|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|10|8|@]|9|@$D|11|E|12|1|13]|$D|14|E|15|1|16]]|A|$]]|$1|J|3|-4|5|6|7|17|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|C]]|Q|$5|M|N|O|A|$P|R]]|S|$5|M|N|O|A|$P|T]]]]

The solution for me is to install this VB6 patch. I'm on Server2008 (32-bit). 

<a href="http://www.microsoft.com/en-us/download/details.aspx?id=10019" rel="nofollow">http://www.microsoft.com/en-us/download/details.aspx?id=10019</a>

It makes me sad that we're still talking about this in 2014... but here it is. :)

<hr>

From puetzk's comment: These are outdated: you want to be using <a href="http://www.microsoft.com/en-us/download/details.aspx?id=7030" rel="nofollow">Microsoft Visual Basic 6.0 Service Pack 6 Cumulative Update</a> (<a href="https://support.microsoft.com/en-us/kb/957924" rel="nofollow">kb957924</a>).

blocks|key|1765833|text|问题：|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|1765834|Microsoft+2010产品(或更高版本)安装的更新破坏了MSCOMCTL.ocx和COMCTL32.ocx的兼容性。不幸的是，这会影响许多其他程序，如Visual+6+SP6，甚至Oracle+v5。实际问题是HKEY_CLASSES_ROOT\TypeLib\{831FDD16-0C5C-11D2-A9FC-0000F8754DA1}\2.0注册表项。您可以找到有关此问题的详细背景信息，这里。|CODE|1765835|这里是另一个可行的解决方案：|1765836|该解决方案假设您没有通过删除、替换和重新注册MSCOMCTL.ocx和COMCTL32.ocx而损坏注册表，而无需注销Office修补程序文件。|1765837|创建一个名为fix.cmd的批处理文件，并在其中放置以下命令：|1765838|regsvr32+/s+/u+%25windir%25\SysWOW64\comctl32.ocx
regsvr32+/s+/u+%25windir%25\SysWOW64\mscomctl.ocx
del+/y+%25windir%25\SysWOW64\comctl32.ocx
del+/y+%25windir%25\SysWOW64\mscomctl.ocx
msiexec+/passive+/norestart+/i+KB2708437.msi
msiexec+/passive+/a+KB2708437.msi
regtlib+%25windir%25\SysWOW64\msdatsrc.tlb|code-block|syntax|javascript|1765839|从msi文件中下载并重命名为KB2708437.msi.|1765840|注意:指向Service+6下载的直接链接位于这里。|1765841|运行fix.cmd，问题就解决了！|1765842|fix.cmd所做的是正确地注销并删除当前的MSCOMCTL.ocx和COMCTL32.ocx文件，然后应用最新的Visual+6+SP6汇总修补程序。实际上，脚本强制执行要安装的修补程序，然后通过更新每个文件重新安装，而不管版本如何。最后，注册msdatsrc.tlb类型库。|1765843|如果这对你有用，请告诉我。|1765844|======================================================================|1765845|高级解决方案：|1765846|但是，如果您意外地损坏了注册表，则需要获得尽可能多的MSCOMCTL.ocx和COMCTL32.ocx版本。然后，您需要从较新的版本开始，返回到旧版本和寄存器，并注销ocx文件的。|1765847|MSCOMCTL.ocx的最新版本是2012年5月的6.1.98.39+(v2.1)，它更可能是安装在系统上并导致所有问题的。|1765848|最古老的(遗留)版本是Visual+6在1998年6.1.97.82+(v2.0)上附带的版本，或者是在2005年4月随早期service+6.1.97.86一起发布的版本。|1765849|示例：|1765850|regsvr32+/s+comctl32.6.0.98.34.ocx
regsvr32+/s+/u+comctl32.6.0.98.34.ocx

regsvr32+/s+comctl32.6.0.81.6.ocx
regsvr32+/s+/u+comctl32.6.0.81.6.ocx+

regsvr32+/s+comctl32.6.0.81.5.ocx
regsvr32+/s+/u+comctl32.6.0.81.5.ocx

regsvr32+/s+mscomctl.6.1.98.39.(2.1).ocx
regsvr32+/s+/u+mscomctl.6.1.98.39.(2.1).ocx

regsvr32+/s+mscomctl.6.1.98.34.ocx
regsvr32+/s+/u+mscomctl.6.1.98.34.ocx

regsvr32+/s+mscomctl.6.1.97.86.ocx
regsvr32+/s+/u+mscomctl.6.1.97.86.ocx

regsvr32+/s+mscomctl.6.1.97.82.(2.0).ocx
regsvr32+/s+/u+mscomctl.6.1.97.82.(2.0).ocx

regsvr32+/s+/u+%25windir%25\SysWOW64\comctl32.ocx
regsvr32+/s+/u+%25windir%25\SysWOW64\mscomctl.ocx

del+/q+%25windir%25\SysWOW64\comctl32.ocx
del+/q+%25windir%25\SysWOW64\mscomctl.ocx

msiexec+/passive+/norestart+/i+KB2708437.msi
msiexec+/passive+/a+KB2708437.msi

regtlib+%25windir%25\SysWOW64\msdatsrc.tlb+++|1765851|警告：|1765852|不要在互联网上搜索那些文件。要查找OCX文件的不同版本，请下载并解压Microsoft正式安装程序包，如下所示：|1765853|2005年4月-微软KB896559|1765854|2008年12月-微软KB926857|1765855|2009年4月-微软KB957924|1765856|2012年5月-微软KB2708437|1765857|还建议运行CCleaner+Version4.0或更高版本来修复计算机上任何其他与ActiveX相关的问题。|1765858|entityMap|0|LINK|mutability|MUTABLE|url|http://www.fmsinc.com/microsoftaccess/controls/mscomctl/|1|https://www.microsoft.com/en-us/download/details.aspx?id=30505|2|https://support.microsoft.com/en-us/kb/896559|3|https://support.microsoft.com/en-us/kb/926857|4|https://support.microsoft.com/en-us/kb/957924|5|https://support.microsoft.com/en-us/kb/2708437|6|https://www.piriform.com/ccleaner^0|0|3|0|30|1W|5J|2|0|0|0|E|0|0|6|7|0|0|E|D|0|N|2|1|0|2|7|0|0|0|0|0|7|0|24|D|0|Q|G|0|P|G|1Y|9|0|0|0|0|3|0|0|0|I|2|0|0|J|3|0|0|I|4|0|0|J|5|0|5|8|6|0^^$0|@$1|2|3|4|5|6|7|2F|8|@$9|2G|A|2H|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|2I|8|@$9|2J|A|2K|B|H]]|D|@$9|2L|A|2M|1|2N]]|E|$]]|$1|I|3|J|5|6|7|2O|8|@$9|2P|A|2Q|B|C]]|D|@]|E|$]]|$1|K|3|L|5|6|7|2R|8|@]|D|@]|E|$]]|$1|M|3|N|5|6|7|2S|8|@$9|2T|A|2U|B|C]]|D|@]|E|$]]|$1|O|3|P|5|Q|7|2V|8|@]|D|@]|E|$R|S]]|$1|T|3|U|5|6|7|2W|8|@$9|2X|A|2Y|B|C]]|D|@]|E|$]]|$1|V|3|W|5|6|7|2Z|8|@]|D|@$9|30|A|31|1|32]]|E|$]]|$1|X|3|Y|5|6|7|33|8|@$9|34|A|35|B|C]]|D|@]|E|$]]|$1|Z|3|10|5|6|7|36|8|@]|D|@]|E|$]]|$1|11|3|12|5|6|7|37|8|@]|D|@]|E|$]]|$1|13|3|14|5|6|7|38|8|@]|D|@]|E|$]]|$1|15|3|16|5|6|7|39|8|@$9|3A|A|3B|B|C]]|D|@]|E|$]]|$1|17|3|18|5|6|7|3C|8|@$9|3D|A|3E|B|C]]|D|@]|E|$]]|$1|19|3|1A|5|6|7|3F|8|@$9|3G|A|3H|B|C]]|D|@]|E|$]]|$1|1B|3|1C|5|6|7|3I|8|@$9|3J|A|3K|B|C]|$9|3L|A|3M|B|C]]|D|@]|E|$]]|$1|1D|3|1E|5|6|7|3N|8|@]|D|@]|E|$]]|$1|1F|3|1G|5|Q|7|3O|8|@]|D|@]|E|$R|S]]|$1|1H|3|1I|5|6|7|3P|8|@$9|3Q|A|3R|B|C]]|D|@]|E|$]]|$1|1J|3|1K|5|6|7|3S|8|@]|D|@]|E|$]]|$1|1L|3|1M|5|6|7|3T|8|@]|D|@$9|3U|A|3V|1|3W]]|E|$]]|$1|1N|3|1O|5|6|7|3X|8|@]|D|@$9|3Y|A|3Z|1|40]]|E|$]]|$1|1P|3|1Q|5|6|7|41|8|@]|D|@$9|42|A|43|1|44]]|E|$]]|$1|1R|3|1S|5|6|7|45|8|@]|D|@$9|46|A|47|1|48]]|E|$]]|$1|1T|3|1U|5|6|7|49|8|@]|D|@$9|4A|A|4B|1|4C]]|E|$]]|$1|1V|3|-4|5|6|7|4D|8|@]|D|@]|E|$]]]|1W|$1X|$5|1Y|1Z|20|E|$21|22]]|23|$5|1Y|1Z|20|E|$21|24]]|25|$5|1Y|1Z|20|E|$21|26]]|27|$5|1Y|1Z|20|E|$21|28]]|29|$5|1Y|1Z|20|E|$21|2A]]|2B|$5|1Y|1Z|20|E|$21|2C]]|2D|$5|1Y|1Z|20|E|$21|2E]]]]

The problem:

Microsoft Office 2010 products (or later) install updates that break compatibility of MSCOMCTL.ocx and COMCTL32.ocx. Unfortunately this affects many other programs such Visual Basic 6 SP6 and even Oracle Virtual Box v5. The actual problem is <code>HKEY_CLASSES_ROOT\TypeLib\{831FDD16-0C5C-11D2-A9FC-0000F8754DA1}\2.0</code> registry key. You can find detailed background information about this problem <a href="http://www.fmsinc.com/microsoftaccess/controls/mscomctl/" rel="noreferrer">here</a>.

Here is another working solution:

The solution assumes you have not damaged your registry by deleting, replacing and re-registering MSCOMCTL.ocx and COMCTL32.ocx without unregistering the Office patch files.

Create a batch file called fix.cmd and place the following commands in it:

<pre><code>regsvr32 /s /u %windir%\SysWOW64\comctl32.ocx
regsvr32 /s /u %windir%\SysWOW64\mscomctl.ocx
del /y %windir%\SysWOW64\comctl32.ocx
del /y %windir%\SysWOW64\mscomctl.ocx
msiexec /passive /norestart /i KB2708437.msi
msiexec /passive /a KB2708437.msi
regtlib %windir%\SysWOW64\msdatsrc.tlb
</code></pre>

Download from <a href="https://support.microsoft.com/en-us/kb/2708437" rel="noreferrer">Security update for Visual Basic 6.0 Service Pack 6: August 14, 2012</a> the msi file and rename it to KB2708437.msi.

Note: A direct link to the Service Pack 6 download is located <a href="https://www.microsoft.com/en-us/download/details.aspx?id=30505" rel="noreferrer">HERE</a>.

Run fix.cmd and the problem will be fixed!

What fix.cmd does is to properly unregister and then delete the current MSCOMCTL.ocx and COMCTL32.ocx files, and then apply the latest Visual Basic 6 SP6 rollup patch. In fact, the script enforces the patch to be installed and then re-installed by updating every file, regardless of version. Finally it registers msdatsrc.tlb type library.

Please let me know if this works for you.

======================================================================

Advanced Solution:

If however you have accidentally damaged your registry, you need to get as many versions of MSCOMCTL.ocx and COMCTL32.ocx you can find. Then you need to start from the newer version going back to the older and register and unregister the ocx files.

The latest version of MSCOMCTL.ocx is 6.1.98.39 (v2.1) of May 2012 which is more likely the one installed on your system and causing all your problems. 

The oldest (legacy) version is that shipped with Visual Basic 6 on 1998 6.1.97.82 (v2.0), or the one shipped with an early service pack 6.1.97.86 on April 2005.

Example:

<pre><code>regsvr32 /s comctl32.6.0.98.34.ocx
regsvr32 /s /u comctl32.6.0.98.34.ocx

regsvr32 /s comctl32.6.0.81.6.ocx
regsvr32 /s /u comctl32.6.0.81.6.ocx 

regsvr32 /s comctl32.6.0.81.5.ocx
regsvr32 /s /u comctl32.6.0.81.5.ocx

regsvr32 /s mscomctl.6.1.98.39.(2.1).ocx
regsvr32 /s /u mscomctl.6.1.98.39.(2.1).ocx

regsvr32 /s mscomctl.6.1.98.34.ocx
regsvr32 /s /u mscomctl.6.1.98.34.ocx

regsvr32 /s mscomctl.6.1.97.86.ocx
regsvr32 /s /u mscomctl.6.1.97.86.ocx

regsvr32 /s mscomctl.6.1.97.82.(2.0).ocx
regsvr32 /s /u mscomctl.6.1.97.82.(2.0).ocx

regsvr32 /s /u %windir%\SysWOW64\comctl32.ocx
regsvr32 /s /u %windir%\SysWOW64\mscomctl.ocx

del /q %windir%\SysWOW64\comctl32.ocx
del /q %windir%\SysWOW64\mscomctl.ocx

msiexec /passive /norestart /i KB2708437.msi
msiexec /passive /a KB2708437.msi

regtlib %windir%\SysWOW64\msdatsrc.tlb 
</code></pre>

WARNING: 

Do not search the internet for those files. To find different version of the OCX files download and extract official Microsoft Installer packages such as the following:

<a href="https://support.microsoft.com/en-us/kb/896559" rel="noreferrer">2005 Apr - Microsoft KB896559</a>

<a href="https://support.microsoft.com/en-us/kb/926857" rel="noreferrer">2008 Dec - Microsoft KB926857</a>

<a href="https://support.microsoft.com/en-us/kb/957924" rel="noreferrer">2009 Apr - Microsoft KB957924</a>

<a href="https://support.microsoft.com/en-us/kb/2708437" rel="noreferrer">2012 May - Microsoft KB2708437</a>

It is also recommended to run <a href="https://www.piriform.com/ccleaner" rel="noreferrer">CCleaner</a> version 4.0 or later to fix any other ActiveX related problems on your computer.

blocks|key|1288650|text|您可以尝试检查您的注册表。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1288651|HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib{831FDD16-0C5C-11D2-A9FC-0000F8754DA1}|unordered-list-item|offset|length|style|BOLD|1288652|如果是2.1版本，将导致无法加载MSCOMCTL.OCX问题。|1288653|您可以恢复到2.0verion(不仅复制文件，还应该取消+2.1并注册已恢复的文件)|1288654|或|1288655|您可以尝试最新的2.2版本|1288656|https://support.microsoft.com/en-us/kb/3096896+(提交日期:2015年11月5日)|1288657|https://www.microsoft.com/en-us/download/details.aspx?id=50722|1288658|一些版本信息：|1288659|6.0.88.62+(2.0)|1288660|6.1.97.82+(2.0)|1288661|6.1.98.34+(2.1)+<<<不适合我|1288662|6.1.98.46+(2.2)|1288663|entityMap|0|LINK|mutability|MUTABLE|url|https://support.microsoft.com/en-us/kb/3096896|1^0|0|0|29|0|0|G|C|0|0|0|0|1A|0|0|0|1Q|1|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1D|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|1E|8|@$E|1F|F|1G|G|H]]|9|@]|A|$]]|$1|I|3|J|5|6|7|1H|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|1I|8|@$E|1J|F|1K|G|H]]|9|@]|A|$]]|$1|M|3|N|5|6|7|1L|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|1M|8|@]|9|@]|A|$]]|$1|Q|3|R|5|D|7|1N|8|@]|9|@$E|1O|F|1P|1|1Q]]|A|$]]|$1|S|3|T|5|D|7|1R|8|@]|9|@$E|1S|F|1T|1|1U]]|A|$]]|$1|U|3|V|5|6|7|1V|8|@]|9|@]|A|$]]|$1|W|3|X|5|D|7|1W|8|@]|9|@]|A|$]]|$1|Y|3|Z|5|D|7|1X|8|@]|9|@]|A|$]]|$1|10|3|11|5|D|7|1Y|8|@]|9|@]|A|$]]|$1|12|3|13|5|D|7|1Z|8|@]|9|@]|A|$]]|$1|14|3|-4|5|6|7|20|8|@]|9|@]|A|$]]]|15|$16|$5|17|18|19|A|$1A|1B]]|1C|$5|17|18|19|A|$1A|T]]]]

You may try to check your registry 

<ul>
<li>HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib{831FDD16-0C5C-11D2-A9FC-0000F8754DA1}</li>
</ul>

If it is 2.1 version, it will cause cannot load MSCOMCTL.OCX issue.

You may restore to 2.0 verion (not only copy the file, you should unregiser 2.1 and register the restored file)

Or

You may try latest 2.2 version 

<ul>
<li><a href="https://support.microsoft.com/en-us/kb/3096896" rel="nofollow">https://support.microsoft.com/en-us/kb/3096896</a> (file date: 5-Nov-2015)</li>
<li><a href="https://www.microsoft.com/en-us/download/details.aspx?id=50722" rel="nofollow">https://www.microsoft.com/en-us/download/details.aspx?id=50722</a></li>
</ul>

Some version information :

<ul>
<li>6.0.88.62 (2.0)</li>
<li>6.1.97.82 (2.0)</li>
<li>6.1.98.34 (2.1) &lt;&lt;&lt; not work for me</li>
<li>6.1.98.46 (2.2)</li>
</ul>

blocks|key|876621|text|在尝试了这里所建议的事情之后，我继续有问题。最后，我发现我的mscomctl.ocx文件夹中出现了错误的版本。我发现了下面的版本：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|876622|Mar.+09,+2004++01:00+AM+++1,081,616++mscomctl.ocx
Jun.+06,+2012++07:59+PM+++1,070,152++mscomctl.ocx
Dec.+08,+2015++03:57+AM+++1,070,232++MSCOMCTL.OCX|code-block|syntax|javascript|876623|最后一个问题(1,070,232)为我解决了这个问题。|876624|entityMap^0|U|C|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|S|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|N|$]]

I continued to have problems after trying the things suggested here. In the end, it turned out that I had the wrong version of <code>mscomctl.ocx</code> in my SysWOW64 folder. I found the following versions kicking around:

<pre><code>Mar. 09, 2004 01:00 AM 1,081,616 mscomctl.ocx
Jun. 06, 2012 07:59 PM 1,070,152 mscomctl.ocx
Dec. 08, 2015 03:57 AM 1,070,232 MSCOMCTL.OCX
</code></pre>

Getting the last one (1,070,232) solved this problem for me.

blocks|key|1765965|text|我也遇到了类似的麻烦，我用VB6编写了一个运行了10年的程序，现在客户端想做一些重大的修改，而我所有的机器现在都是windows+10；没有打开这个项目，总是mscomctl.ocx错误。我做了很多事情，但解决不了这个问题。然后我想到了一个简单的方法，我下载了最新的mscomctl+(|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1765966|📷|atomic|offset|length|1765967|然后打开一个新项目，添加所有组件，如mscomctl、activx控件等，保存它并在记事本中打开这个新创建的项目文件，然后复制精确的详细信息并在原始项目中替换.还有宾果！这个老工程正常地开放了，没有大惊小怪！我希望这段经历能对某人有所帮助。|1765968|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://developer.qcloudimg.com/http-save/yehe-900000/353e064c8b6fda9fa209bb672a18abb3.png|imageAlt^0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|S|8|@]|9|@$E|T|F|U|1|V]]|A|$]]|$1|G|3|H|5|6|7|W|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|X|8|@]|9|@]|A|$]]]|J|$K|$5|L|M|N|A|$O|P|Q|-4]]]]

I had similar trouble, have a program running for last 10 years written in VB6, now client wanted to make some major modifications, and all my machines which are now windows 10; failed to open the project, it was always that nasty mscomctl.ocx error. I had done lot of things but could not solve the problem. Then I thought the easy way around, I downloaded the latest mscomctl (<a href="https://i.stack.imgur.com/tFt4F.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/tFt4F.png" alt="mscomctl.ocx"></a>
Then opened a new project, added all the components like mscomctl, activx controls etc, saved it and opened this newly created project file in Notepad, then copied the exact details and replaced in the original project.... and bingo! The old project opened up normally without any fuss! I hope this experience will help someone.

blocks|key|1766000|text|在我的例子中，上面没有任何解决方案。接近放弃时，删除任何引用(使用Arvo的fix.cmd文件)，并尝试在C:\Program+(X86)\\‘s+98文件夹中粘贴mscomctl.ocx+(版本6.1.97.86)。经过4、5个多小时的斗争，它终于奏效了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1766001|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

In my case didn't work any solution above. Near to give up, removed any reference (using Arvo Bowen's fix.cmd file) and tried pasting mscomctl.ocx (version 6.1.97.86) in C:\Program Files (x86)\Microsoft Visual Studio\VB98 folder. It worked finally after more than 4 or 5 hours fighting for a solution.

After windows update installed security update <a href="http://support.microsoft.com/kb/2687323" rel="noreferrer">KB2687323</a>, my VB6 project fails to load. Displayed error message is "'[project_vbp_path]/MSCOMCTL.OCX' could not be loaded--Continue Loading Project?". Note that the path in the messeage is the vbp file folder path instead of the control's registered path.

Details:

<ol>
<li>MSCOMCTL.OCX is registered in the usual system32 folder.</li>
<li>The executable produced by exactly the same project, an hour before the update runs fine and loads the updated MSCOMCTL.OCX (I have checked it with Process Explorer).</li>
</ol>

The security update description states that MSCOMCTL.OCX has a new fixed version. So I checked the project properties for "Upgrade ActiveX Controls" checkbox. I tried it both ways; checked and unchecked to no avail. VB6 IDE refused to load the upgraded OCX.

VB6 IDE cannot load MSCOMCTL.OCX after update KB 2687323

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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windows更新安装安全更新后，我的VB6项目无法加载。显示的错误消息是“‘Project_path/MSCOMCTL.OCX’无法加载-继续加载项目？”注意，中间层中的路径是vbp文件文件夹路径，而不是控件的注册路径。详细信息：MSCOMCTL.OCX在通常的system32文件夹中注册。由完全相同的项目生成的可执...

问更新KB 2687323后，VB6 IDE无法加载MSCOMCTL.OCX
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问更新KB 2687323后，VB6 IDE无法加载MSCOMCTL.OCXEN