Forum Discussion

Wemps's avatar
Wemps
Copper Contributor
Jun 29, 2026

Add-in issues with Version 2606 (Build 20131.20090) of Classic?

Hey there,

Any other developers out there seeing an increase in failures retrieving the email body using OfficeJS SDK with this latest version of Classic Outlook?  We're seeing the 100% failure to retrieve the body after the first retrieval succeeds. 

Any users seeing their add-ins quit working with this change?  Everything seems to be fine on Version 2605.  

For developers; anyone have better places to open threads or contact Outlook support?

Thanks!

Jeremy

classic outlook

1 Reply

  • Jamony's avatar
    Jamony
    MCT
    Jul 02, 2026

    Hi, I’d treat this as a possible add-in compatibility issue with that Office build. A good first test is starting classic Outlook in safe mode with outlook.exe /safe. If the issue disappears, disable the add-ins and bring them back one at a time to find the one that breaks. I’d also check whether the affected add-in vendor has a note about Version 2606 or Current Channel builds. If this started immediately after the update and affects business users, temporarily moving one test machine to a previous working build can help prove whether it is a regression before you roll back broadly.