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Why Won’t My Android Calendar Sync with Exchange After the November 2025 Gmail Update?
Many Android users are facing calendar sync problems with their Exchange accounts starting in mid-November 2025. The issue prevents calendar events from showing up even though email and contacts work fine. People first noticed these problems around November 11, with more reports coming in through November 18 and 19.
Why This Problem Started
The Gmail app is causing the trouble. A recent update broke how Android devices talk to Exchange servers. Some people think this happened at the same time as a big Cloudflare outage on November 18, but the two events are not connected. The calendar sync issue started before that day and kept going after Cloudflare came back online.
What Stops Working
When this problem hits your phone, here’s what you’ll see:
- Calendar events from Exchange don’t show up in Google Calendar
- New meetings you make don’t sync back to your work calendar
- Contacts might vanish from your phone, WhatsApp, and other apps
- Manual sync doesn’t help at all
- No error message appears to tell you what’s wrong
The strange part is that email keeps working just fine. Only the calendar part breaks down.
How to Get Your Calendar Working Again
People have found a few ways to fix this mess:
Remove Gmail app updates
Go to your phone settings, find the Gmail app, and uninstall updates. Turn off auto-updates so the broken version doesn’t come back.
Delete and re-add your account
This works for a short time, but the problem often comes back.
Clear your app cache
Go to Settings > Apps > Gmail or Calendar > Storage > Clear cache. Don’t clear data, just the cache.
Turn off battery saver
Battery saving features can block calendar sync. Go to your battery settings and stop optimizing the Gmail and Calendar apps.
Who This Affects
This isn’t just happening to one type of Exchange setup. People using real Microsoft Exchange, Tobit David systems, and other email servers all report the same trouble. It doesn’t matter if you’re using Cloudflare or not. The problem sits with the Gmail app itself, not your company’s email server.
Some Android users got an error message saying “Gmail’s security settings are currently stricter than the settings set by your IT administrator.” Changing Exchange ActiveSync settings helped a few people, but not everyone.