Another instance is running. Only one instance can be running at a time.

shaokaode

When installing .net, the problem appeared. Whether to modify the registry. ．
Where can I fix it? Thank you

苹果小刀

Clean it up with a registry cleaning tool!

psycholmu

Delete HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\pendingfilerenameoperations in the registry

Try this or restart the windows installer service to see if it works

makoto369

To solve this problem, delete the registry HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager's PendingFileRenameOperations subkey. "Double-click to delete data, key is not deleted"

     the reason:

     According to the name, HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager should store a snapshot of the current system session, and PendingFileRenameOperations records an unsuccessful file renaming operation. This key may be used during installation to record the operation of temporary files during the installation If this key is found when the installation process starts, it considers that the previous installation program has not been completed, and refuses to continue its installation process.

wenmy715

Windows Installer service is being used