Time to Bail · Boarding pass
Act. You can stay.
Upgrade to 2.6.84.0 or later and set up app-based sign-in by April 7, 2027, or sync stops.[1]
Act means: change a setting or plan before the date. You can stay.
Entra Connect Sync must be upgraded by April 7, 2027 or sync stops
Microsoft says Entra Connect Sync must run version 2.6.84.0 or later with app-based sign-in by April 7, 2027. If not, sync stops working.
Tick steps as you go. Your progress stays in this browser.
On the sync server, check the installed Entra Connect Sync version.
Download the installer from the Microsoft Entra admin center and upgrade to 2.6.84.0 or later.
Configure application-based authentication, then confirm that sync runs.
| Upgrade by | April 7, 2027[1] |
|---|---|
| Version needed | 2.6.84.0 or later, with application-based authentication[1] |
| If you do nothing | Synchronization services stop working after that date[1] |
| Older version support ends | Version 2.5.79.0: October 23, 2026[1] |
| Support policy | Each 2.x version retires 12 months after a newer one is released[1] |
| Running a retired version | It might stop working without warning[1] |
| Where to get it | Only from the Microsoft Entra admin center[1] |
| Needs | .NET Framework 4.7.2 and TLS 1.2[1] |
| Servers on older Entra Connect Sync | Sync stops after April 7, 2027 unless upgraded[1] |
Check it yourself. Every fact above links here.
Time to bail on Microsoft Entra Connect Sync (older versions)? Act. You can stay. Upgrade to 2.6.84.0 or later and set up app-based sign-in by April 7, 2027, or sync stops.
On our scale this is Act: change a setting or plan before the date. You can stay.
Microsoft says Entra Connect Sync must run version 2.6.84.0 or later with app-based sign-in by April 7, 2027. If not, sync stops working.
Here are the facts we checked:
You can stay on Microsoft Entra Connect Sync. You have to change a setting or plan before the date.
Leaving is a choice here, not a must.
Microsoft is the main source for this page. Microsoft Entra Connect Sync has not said more than what is listed here. If a fact is not on this page, we do not know it yet.
Servers on older Entra Connect Sync: Sync stops after April 7, 2027 unless upgraded.
The date to remember is April 7, 2027. Make the change before then.
A few tips:
If the change affects your members or team, send one short email. Say what changes for them and when. Put the most important line first.
If there is a date, send a short reminder a few days before it. Keep a copy of the list you sent it to.
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Arrivals · for builders
People on Microsoft Entra Connect Sync (older versions) can stay if they make the change. Some would rather leave. Get the playbook for this change, and list your product here.
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