Notes about the ~?? file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries
, unused processes and other unfavourable system settings to identify slowdown issues.
The ~?? file type is primarily associated with 'Locked File'. A file extension starting with a tilde (~) often means a locked file which are presently being used and can't be accessed.