Problem:
When you open the Device Manager in your Windows XP computer the"Action cancelled" screen may appear
Operating system:
Windows XP
This is caused if the module dmocx.dll is missing or not registered correctly.
To fix the problem, type this command in Start, Run dialog:
regsvr32 c:\windows\system32\dmocx.dll
You should see the message DllRegisterServer in dmocx.dll succeeded after running the command. In case the module is missing from the system and you get the following error:
LoadLibrary("dmocx.dll") failed - The specified module could not be found.
You need to extract a copy of the file dmocx.dll from the Windows XP CD-ROM or from the ServicePackFiles folder, which ever has the latest version of the file. To extract a copy of the file from the Windows XP CD, use these steps:
Click Start, Run and type CMD.EXE
Type this command:
expand X:\i386\dmocx.dl_ -r c:\windows\system32
Where X:\ is your CD-ROM drive letter. The above command assumes Windows is installed in C:\ drive. If not, change the drive letter accordingly.
After extracting the file, register the file using the regsvr32 command (as mentioned above.)