When the Outlook app opens, I can see the 'Try the new Outlook' toggle. The toggle just turns back off Fix Outlook Not Opening After Windows Update and the app does nothing different. I saw a reply to an issue similar to mine that mentioned going to the Registry Editor and followed instructions outlined in that message but nothing changed. By the end, you’ll know exactly how to restore your Outlook and prevent future error MAPI does not validate that a provider's DLL that it is requested to...