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rundll32.exe

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by ronald.zeck

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We recently received new PC's running WIN XP. About 20% of the machines are freezing up when opening or closing documents, opening or replying to e-mail in Outlook, opening up local drives, etc. Task Manager indicates rundll32.exe using 99-100% of CPU usage. Could this be the result of a faulty image or what?

2 replies

by parbo

Could be a faulty file.
On one of the systems delete this file and extract a new copy. This should tell you if you are dealing with a corrupted file.

Hope this helps

by nettek

Rundll32.exe is the windows executable that loads other dll's into memory. Since it is happening on 20% of your PCs, I suspect two things:
1. You have a virus.
2. You have software installed on these PCs that has corrupted Rundll32, or has installed a corrupted dll that Rundll32 cannot load. Run MSCONFIG from Start-> Run, and click on the startup tab. It will list all of the applications that run on startup. Uncheck one, reboot, and test. Repeat the process until you've found the culprit.

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