Hello Alexandros Philippou ,

This is an error I don't think I have ever seen before. and after a little research, appears to be a Windows error.

Perhaps you can explain exactly when you get the error?

Are you trying to perhaps unzip a project package?

If you could provide the full error stack/ screen grabs, this would be helpful

It was actually happening when trying to open a project file for translation. I tried to recreate the project a couple times and then it worked, but it cost me quite some time. 
If it may help, I have Trados and my Mac and use it on Windows through Parallels (and if I'm not wrong my Windows is like the Windows Insider Program).

Dear Alexandros Philippou,

I had the same problem and I have your same configuration (Mac + virtual machine on Parallels). I don't know if you, just like me, store your Studio projects on iCloud, but sometimes that could be the problem (see below).

For me the error appeared when I tried to open a project file for sign-off. I then tried to open it simply double-clicking on it and I discovered that there was an auto-saved version of the file, which was then recovered. After that, Open for Sign-off worked fine.

As I said above, I get file access errors because iCloud storage is optimized and files get backed up. In order to use them again, you need to download them completely from iCloud to your local drive. The same happens to me with TMs. If I don't use them for some time, they get backed up and I cannot see them from my Windows machine. I need to download them again from iCloud in order to see them in Windows.

Maybe that was not your problem, Alexandros Philippou, but I just wanted to share this piece of information.

Have a good start into the week,

Sabina