TurboTax Business won't load

[RonFromOKLA]

Initially, I opened TT Business and the Update failed but I was allowed to continue using the software.  I completed my form and it had one Error message but I moved on to my personal return.  Now I'm trying to go back and make some updates to my Business return and correct the error, however, TT Business will not load.  It produces a 1603 Error.  I am the Administrator, I am not aware of any Anti-virus/Spyware running, I have turned off my Windows Defender firewall and stopped my auto-backup software, rebooted and tried it all again but nothing is working.  I have downloaded the manual upgrade file and executed it, received a Superpatch applied successfully, please relaunch Turbo Tax 2022.  When I relaunch TT Business the only option is to Upgrade and when I do we come back to the 1603 Error.  Oh...so....Frustrating!!!  Help please....

[HeatherPLO · Accepted solution]

For assistance with the 1603 error message, please see this Help Article.  In addition, please see your software's troubleshooting guide below:

To troubleshoot a Windows installation.

To troubleshoot a Mac installation.