I too was able to run the update and things seem to be back to normal. @IntuitBrooks or anyone at Intuit, can you please answer the following questions:

1. When will the Downloads page have the latest version of QB2021 (looks like it's still the previous version and I want to download this version and save as a back-up)?

2. Is it safe to turn window tabbing back on?

Thank you for your efforts!