No Adobe Reader PDF Preview in Outlook after Update in November

Solution 1:

PS: Microsoft Outlook for Office 365 MSO (16.0.12130.20232) 32-Bit Adobe Acrobat Reader DC, Continuous Release, Version 2021.007.20099, 64-Bit

As I know, if we install different bit of Microsoft Outlook and Adobe Reader, such as 32bit version of Microsoft Outlook with 64bit version of Adobe Reader or 64bit version of Microsoft Outlook with 32bit version of Adobe Reader, we may encounter many problems.

Considering the impact of this, It's suggested that you could uninstall one of the two program and reinstall with the same bit version as the other program to confirm the Microsoft Outlook and Adobe Reader are designed for the same architecture (32bit vs 64bit).