Couldn't delete a previous invitation file
When a helpdesk operator wants to start a Remote Assistance session with a user, a request is sent to the user session behind the scenes, so a Remote Assistance invitation is generated and sent back to the operator.
One of the first steps to generate the invitation is removing previous invitation files for the same user that might have been left in the temporary folder, then generating a new one and send it back to the helpdesk operator.
This message indicates that an error prevented deleting a previous existing invitation file. This could happen if the user didn’t have permissions on its temporary folder to delete files, or the file being in used and locked by a hang Remote Assistance process.
The “Start Remote Assistance” job will contain further details about the error.