You are currently working on UAT 

One or more files you selected are marked as read only

I recieved a project from a client that is marked as read only.

It show this message in all files:

One or more files you selected are marked as read only. Changes to these files will not be included in the return package.

I am not able to save the files, not even at Save As.

 

Does someone know how to sort that out? I tried every possible way.

Thanks for your help! :)