@DyTkA I agree with Amygdala that something is preventing the FAF Client from starting. The usual suspect for this is AV software, including Windows Security. I would double check that as even though you disabled it at some point, a Windows update may have re-enabled it without your knowledge.
If it isn't AV software/Windows Security, then you may need to do a system file check to make sure your Windows is running as it should.