Blog Post

Office End Of Support Blog
2 MIN READ

Announcing the retirement for Office Online Server

TimDavenport's avatar
TimDavenport
Icon for Microsoft rankMicrosoft
Oct 21, 2025
What’s changing? Microsoft is announcing the end of support and retirement for Office Online Server effective December 31, 2026. After this date, Office Online Server will no longer receive securit...
Updated Apr 02, 2026
Version 3.0
Policies
support
Upgrade
itebe780's avatar
itebe780
Brass Contributor
Feb 10, 2026

Hi Amesym, Microsoft already extended the period 2 years more (end of 2028). Not a perfect solution, but it let us more time to handle it. I agree that without OOS, SharePoint On-Prem has no sense anymore...

ameysm's avatar
ameysm
Copper Contributor
Mar 31, 2026

Hello itebe780​ , do you have any official article (link) to support this????

Please share if you do.