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cmctl32.dll

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The cmctl32.dll file is a system component associated with Windows 7, and issues with it can cause web browsers to crash when attempting to upload files. Users have reported that after installing Windows 7 SP1, browsers like Internet Explorer and Firefox crash on the cmctl32.dll error when clicking the file upload button on sites such as Yahoo Mail. Common troubleshooting steps like running sfc /scannow or reregistering the DLL have not resolved the problem, as the DLL's entry point may be missing. This suggests a deeper system file corruption or compatibility issue related to the SP1 update.
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    Windows 7 Web browser crashes when trying to upload a file (after installing Win 7 SP1)

    3 days ago, I installed the new Windows 7 SP1; and installation went just fine. but when I tried to upload a file from within yahoo mail, IE8 crashes as soon as I click the "Choose file to upload" button. Actually, I do see the applet, but then it crashes on cmctl32.dll. This also happens on...
    • PaulAl
    • Thread
    • batch file browser cmctl32.dll compatibility crash error message firefox ie8 internet explorer registry software issues sp1 support system restore uac update upload user rights windows 7
    • Replies: 1
    • Forum: Windows Help and Support
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