TTax 2021 has worked fine for 2 months. Just yesterday said it needed an update. Updated and got the error 1603. In a loop where if I do not update, the program will not open now, and the program will not update. Win 10 Pro - all patches. Re-installed. Worked for one day. Back to error 1603. Followed all fixes, admin rights, admin sign-in, run as admin, drives and folders have all permissions, .net software has been re-installed, tried install with only basic windows programs running, etc. NOTHING WORKS. No issues with any other programs except TTax!!! Help. Please Fix. Went through this last year. Will use Block next year for sure!
