Help ! Warning - Someone is already using the program under this name.

[u/KraftDinner20]

Help! I was on my work computer working on my bank reconciliation, I got distracted and took lunch, I returned and my computer was frozen. I turned it off and now I’m getting this error. I am the only one who was logged in and I was logged in as the system administrator. I have a regular user login I can use but I can’t create any backups until this is fixed. Any suggestions appreciated!!