
Can I Revert To An Earlier Version Of Outlook For Macbook Pro Somewhere in the world a puppy will start crying however, because you are defying Microsoft. Select Disable Updates and none of your Office applications will be updated you won’t need to do this in each application. Assuming you have no Time Machine or equivalent backup of your essential files and other documents, create one nowbecause you will need to completely erase that Mac in order to downgrade its operating system from Sierra to any earlier version. Please refer to macOS Sierra: Revert to a previous macOS version. Choose either Outlook Data File (.pst) or Personal Folder File (PST) depending on the version of Outlook you use, then select Next. Choose Import from another program or file, then select Next. In Outlook 20, go to File Import and Export.

The simplest way to reverse an OS update is to restore from an earlier Time Machine backup - one you made before upgrading to Big Sur (or Catalina if you want to go back further).
