"The process cannot access the file because it is being used by another process" after changing wifi network

Hi,

 

Sometimes, after changing from one wifi network to another, I get a pop-up message from Trados saying that the file cannot be accessed because it is being used by another process whenever I try to save or check in a document.

 

It is not an antivirus issue, and the file isn't open anywhere else on my computer.

 

This is a problem, because I need to check in the files so my client can retrieve them through their server, and Trados won't allow me to.

 

Any advice, please?