Did you reboot between the uninstall and reinstall? Did you get any error message that identifies the registry key? Look in the event log for any related entry. Jerry

Hello all, We are trying to uninstall and reinstall are Stayinfront CRM Software and we are getting an error "illegal operation attempted on a registry key that has been marked for deletion" in the middle of the install. Do you guys know how we can fix.

Try to download Windows Installer Cleanup Utility. After you install and run it, find the entry of Stayinfront CRM software and delete it. Then reinstall the program again.Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.