Sometimes when I try to remove a program from add/remove programs it says it can't install because a file doesn't exist, i think thats my fault becuase I delted another way, but my point is, how can I remove a program from the add/remove programs list, becuase it just clogs up with programs i've already unistalled.

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To remove the application entry from Add/Remove Programs (if present) open regedit and navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Curr entVersion\Uninstall and find the folder for the application. Delete the folder.
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