Webinar Recording Stuck at 99%

The dialog box showing the status/progress of a local Webinar recording is stuck at 99%.  This is being done on a work laptop using a VPN connection to the company network.  The recording is done while on the VPN connection.  But the VPN connection unexpectedly disconnected (losing network connectivity) while the recording was in progress.  The VPN connection has been restored but now it appears that the recording status is stuck at 99%.

There is a temp file (video1239184949.mp4.tmp) on my local drive.  But the file is not "viewable" (even if the ".tmp" is removed from the file name).

Any suggestions / solutions to getting a workable video file?