为了完成Johannes的回答，你可以检查这个线程，其中提到了另一个原因(第一个原因是安装32位客户端而不是64位客户端)(强调我的):

只有最新版本的TSVN和TCVS能够共享覆盖图标，并且由于资源管理器有14个覆盖图像和无关的覆盖图标的限制 只是不出现你可能有太多… 如果它的覆盖图标显示，你必须实际使用 32位的Windows资源管理器，这当然意味着你也必须这样做 安装32位版本的TSVN。

在安装TortoiseVCS时可能会出现这个问题，因为:

Looking at what got installed in the filesystem and the registry, it looks like they tried to do what I do with my Shell extensions - install both 64 and 32 -bit versions, so that nobody says "I don't see my overlays/menus"! ;) Unfortunately, it looks like the registry entries for 32-bit got hosed, so the 32-bit extension DLL, even though present, does not have the correct registry entries. If in doubt I suggest to deinstall TCVS and TSVN. Then install TSVN. Maybe after installation reboot twice, not only once. And if they still don't show up go to software control panel and choose to repair the installation. That did the trick for me with when upgrading from the previous to the current version. You should probably install the TortoiseXYZ variant you plan to use mainly first, to improve its chances to fall into one of those limited number of overlay icons slots before the TortoiseXYZ variant you use less. Always keep these limited number of overlay icon slots in mind when trying to analyze malfunctions.

为了完成Johannes的回答，你可以检查这个线程，其中提到了另一个原因(第一个原因是安装32位客户端而不是64位客户端)(强调我的):

只有最新版本的TSVN和TCVS能够共享覆盖图标，并且由于资源管理器有14个覆盖图像和无关的覆盖图标的限制 只是不出现你可能有太多… 如果它的覆盖图标显示，你必须实际使用 32位的Windows资源管理器，这当然意味着你也必须这样做 安装32位版本的TSVN。

在安装TortoiseVCS时可能会出现这个问题，因为:

Looking at what got installed in the filesystem and the registry, it looks like they tried to do what I do with my Shell extensions - install both 64 and 32 -bit versions, so that nobody says "I don't see my overlays/menus"! ;) Unfortunately, it looks like the registry entries for 32-bit got hosed, so the 32-bit extension DLL, even though present, does not have the correct registry entries. If in doubt I suggest to deinstall TCVS and TSVN. Then install TSVN. Maybe after installation reboot twice, not only once. And if they still don't show up go to software control panel and choose to repair the installation. That did the trick for me with when upgrading from the previous to the current version. You should probably install the TortoiseXYZ variant you plan to use mainly first, to improve its chances to fall into one of those limited number of overlay icons slots before the TortoiseXYZ variant you use less. Always keep these limited number of overlay icon slots in mind when trying to analyze malfunctions.

Windows只能显示有限数量的覆盖图标(总共15个，在Windows之后有11个)。像Office Groove, Dropbox, Mozy, Carbonite等程序将劫持一堆11种可能的覆盖图标(如果微软增加这些图标的数量，因为使用它们的应用程序的数量似乎越来越多)…

你可以看到设置了哪些覆盖，并在注册表中更改它们(自担风险):

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\explorer\ShellIconOverlayIdentifiers

If you are using TortoiseCVS (and have nothing else using overlay icons), you will get a couple of TortoiseSVN Icons, and all of your TortoiseCVS icons. This is because the overlay icons are used in alphabetical order. Again, at your own risk (editing the registry may blow up your computer, yada, yada, yada -- and if you are reading Stack Overflow and using Windows and haven't edited the registry, you are a rare beast indeed), feel free to rename them (I suggest putting numbers in front of the ones you want to use and "z_"'s prefixed to the ones you don't need). The TortoiseSVN Shell extensions are nicely named so you know what they do, the TortoiseCVS extensions are not. After looking through the source code, I found the pertinent information:

TortoiseCVS0 -在CVS TortoiseCVS1 -不在CVS中 TortoiseCVS3 -冲突 TortoiseCVS4 -在CVS只读 乌龟ecvs5 -忽略 乌龟ecvs6 -新增 TortoiseCVS7 -删除 龟龟ecvs8 -锁定

我发现，如果你先安装32位版本，它会把64位版本弄得一团糟。在重新安装windows 7时，我刚刚安装了64位版本，现在看起来工作正常。

可能出现的问题和解决方案

Windows限制可用的覆盖图标的数量，参考Kris Erickson的回答。 TortoiseSVN设置不当，参考Ralph Cowling的回答。 从早期版本(1.6.10之前)更新的已知错误，请参阅这里。 TortoiseSVN并不是为所有用户安装的，尝试像下面这样用cmd安装，如果下面三个解决方案都不工作，我相信这个方法会挽救你的生命。

rem Set your own path.
set TOOL_ROOT=d:\Tools\TortoiseSVN-1.6.13.20954-win32-svn-1.6.16\tortoisesvn_1.6.16.21511
set PACKAGENAME=TortoiseSVN-1.6.16.21511-x64-svn-1.6.17.msi
set TOOL_INSTALLROOT="c:\Program Files (x86)\TortoiseSVN"

msiexec /i "%TOOL_ROOT%\%PACKAGENAME%" INSTALLDIR=%TOOL_INSTALLROOT% ALLUSERS=1 ARPSYSTEMCOMPONENT=1 RebootYesNo=No REBOOT=ReallySupress /qb-

set ret=%ERRORLEVEL%

rem The installer seems to return same values as MSI
rem These codes mean that the product is properly installed, even though the code is not zero.
rem 1641 ERROR_SUCCESS_REBOOT_INITIATED
rem 3010 ERROR_SUCCESS_REBOOT_REQUIRED
if %ret% EQU 1641 set ret=0
if %ret% EQU 3010 set ret=0
if %ret% GTR 0 exit %ret%

勒!

在对你的注册表或Kris Erickson(优秀的)回答或下面列出的类似程序做任何事情之前，有一些事情需要考虑……

您是在网络驱动器上吗?

如果有，进入TortoiseSVN设置(右键单击任意文件夹> TortoiseSVN > settings)，然后进入“图标叠加”

确保你选中了“网络驱动器”，如图所示:

默认情况下，在新的Tortoise安装中，网络驱动器没有添加图标。

这为我们解决了问题。如果这对你来说失败了，那么显然你可以通过这里列出的(稍微)复杂的解决方案。