How to Repair User32.dll
The USER32.DLL Windows-based file is like the main artery steaming from the heart of a software program. If it becomes damaged, goes missing or is renamed, an error message will be generated. An incompatible update or a virus could infect the original USER32.DLL file to cause this to happen. While you could use a scanning tool to try to repair it, there is another way to obtain the results you need in the fewest amount of steps.
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Instructions
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1
Save and then close any files and programs that are open.
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2
Back up your data on external media. (Note: Your computer system may be unstable, so applying this step is a precautionary measure.)
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3
Click "Start," click "Run" and then type "cmd" in the Open box.
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4
Click "OK," type "tasklist /m User32.dll" and then press "Enter."
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5
Find the program that created the error in the "Image Name" list and then remove or reinstall it. If your computer continues to display USER32.DLL error messages, continue.
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6
Repair or reinstall the damaged or missing USER32.DLL files using your operating system recovery disk. (Note: Since this is a total reinstall, be sure to follow Steps 1 and 2 before applying this step.)
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Tips & Warnings
Decide on a case-by-case basis whether it is more time consuming to try to repair a USER32.DLL than it is to reinstall the program that is affected.
Only download .DLL extension files from trusted sources.
Keep your firewall turned on and your computer set to receive automatic updates.
References
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