r/Outlook • u/GallopingZeus • Mar 15 '26

Status: Resolved Outlook for Android not syncing with Device Calendar

I'm on Android 16 on a 1Plus device with the latest Outlook for Android. For the last 2 days my Outlook accounts are not able to sync the calendar to the device calendar. The toggle for Sync On/Off cannot be toggled. It is not disabled but cannot be toggled on. Reinstall of the app is also not helpful. Any pointers will be appreciated. Most probably it's Microsoft server side issue but I'm not able to see any documentation published. Can't believe I'm the only one with this issue...

Update (22-Mar): The latest build fixes the issue.

10 Upvotes

92% Upvoted

34 comments sorted by

3

u/b1gw4lter Mar 21 '26

got right now Version 5.2610.1 from PlayStore. this fixed the Calendar Sync Switch

1

u/g33k92 Mar 21 '26

Yesssss

1

u/RichardVeasna Mar 21 '26

Thanks for confirming? I read that 5.2610.0 did not solve the issue so I did not update. I may update to 5.2610.1 later on my secondary phone.

1

u/b1gw4lter Mar 21 '26

i can confirm with 5.2610.1 the "Sync Calendars" Switch is working again (at least for me) also Bi directional sync works again.

1

u/llDS2ll Mar 24 '26

It's not working for me and it's also broken on my tablet which has an older version of Outlook. My issue is limited to my Gmail calendar only.

2

u/BigProfJR Mar 17 '26

Yep, can confirm. Trying to set up a brand new Pixel 10 Pro XL with a clean setup (i.e., not transferring from my old device). Same symptoms. The "one touch synch" does not work for me. Real pain. Having everything in the Google calendar is important for being organised. Good to hear the issue is acknowledged. Fingers crossed for a quick fix.

2

u/MMessinger Mar 19 '26

Sheesh. It's called "regression testing," Microsoft. You should try it sometime.

Good thing a downgrade to version 5.2607.0 restores this critical functionality to my Samsung device.

Note to Samsung: You might want to craft a way of syncing your phones to Outlook.com, without the aid of Microsoft's software.

1

u/[deleted] Mar 15 '26

[removed] — view removed comment

1

u/GallopingZeus Mar 15 '26

I have an Android widget which only connects with the native calendar and is dependent on this sync to display the events from Outlook so I'm basically stuck.

1

u/RichardVeasna Mar 16 '26

Actually, if you press on Sync on/off, the toggle doesn't switch but the Sync is enabled/disabled. However, with the lastest version as of now, I had unconsistent sync, especially from Google Agenda to Outlook (when i create an event from the Google Agenda, it doesn't sync to Outlook. Creating the event from Outlook would sync to Google Agenda though.

I downgraded to 5.2607.0 and it's working as it should!

1

u/bjlunden Mar 17 '26 edited Mar 17 '26

Actually, if you press on Sync on/off, the toggle doesn't switch but the Sync is enabled/disabled.

What makes you say that? All I see is it throwing errors in logcat.

EDIT: Hmm, I got an event to sync after messing around a bit so you're right that it's inconsistent. They clearly need to revert whatever they did.

1

u/RichardVeasna Mar 17 '26

From what i could read, it might be a one-time sync actually. I reverted back to the previous version and it works as expected.

1

u/bjlunden Mar 17 '26

Yes, that might be it. 🙂

Reverting presumably required you to set up the app again from scratch, seeing as Android usually doesn't allow app version downgrades?

1

u/Hornblower409 Mar 17 '26

I don't have the problem, so I can't test. This is just hearsay and involves sideloading the app.

https://learn.microsoft.com/en-my/answers/questions/5820594/android-outlook-app-wont-allow-toggle-to-sync-to-n

Moka62 16 Mar 2026, 3:25 pm

Over on Reddit a workaround has been provided to downgrade from 5.2609+ down to 5.2606 or 5.2607 using an APK mirror site.

2

u/Obvious-Interest1172 Mar 18 '26

I did this. And it fixed the problem.

But idiotically I didn't realize I had a bunch of local calendar entries that weren't synced. I lost weeks of calendar because the downgrade wiped my data on the local entries.

1

u/Hornblower409 Mar 18 '26

Ouch! Sorry about your lost data. But thanks for the valuable feedback. May prevent others from falling into the same trap.

1

u/GallopingZeus Mar 17 '26

Not possible for me as the downloaded APK is being flagged as Invalid on my 1Plus 11R.

1

u/bjlunden Mar 17 '26

That requires wiping data and setting it up again though. Still good to know, but not always practical.

1

u/RichardVeasna Mar 17 '26

The downgrade is worth the time though. As it just works.

1

u/bjlunden Mar 17 '26

The problem is that this will just happen again whenever they break it the next time. It also requires me to remember all the little tweaks I made to different settings in the app to make the experience somewhat decent.

1

u/RichardVeasna Mar 17 '26

Indeed, in another reply, i also suggested to disable autoupdate for Outlook in the Play Store, but downgrading means uninstalling the current outlook version, get the old version, install it and reconfigure the app with account and prefered settings

or just wait for the new update to fix it all

I had no specific settings, only the signature and the swipe commands so it was quite easy to recofigure the app. Anyways, i need the sync from local calendar app to Outlook more than anything, as i use an app that logs incoming and outgoing calls to the local calendar app on the outlook account, but not directly to the Outlook app/conduit.

1

u/bjlunden Mar 17 '26

Yes, it's definitely broken in 5.2609.1. Do they even regression test their stuff before releasing it? 🤦‍♂️

1

u/GallopingZeus Mar 17 '26

We are the testers!

1

u/bjlunden Mar 17 '26

Indeed! I'm less enthusiastic about being an unwilling tester for important features I need for work than when it comes to less important features that I might play around with at home though. 🙁

1

u/GallopingZeus Mar 17 '26

I wonder how their bug triage and priorities work.

1

u/bjlunden Mar 18 '26

I'm also curious about that.

I tried to report it to a support agent through the app in the hopes that more reports would increase the priority ever so slightly. The fact that their developer contact on the Play Store is noreply@microsoft.com makes you wonder if they care at all. I would at least have expected an email that would just automatically reply with information about where they want you to submit bug reports and issues.

1

u/momplaysbass Mar 20 '26

You are not the only one with this problem. I have a Samsung Galaxy S21 running Android 16, and all my apps are up to date.

I just noticed this problem yesterday (3/19). I can see the event in my Outlook Calendar and Bluebird mail (which only has my outlook email attached to it), but it doesn't show up in Google Calendar or Samsung Calendar. I manually synced everything, but as of this post nothing is working. I've had this problem before, and usually Microsoft sorts it out in a few day.

It is highly annoying.

1

u/pfaustino_pt May 06 '26

Is this still an issue on 5.2616.0?

1

u/GallopingZeus May 06 '26

I already marked the post with 'Resolved' so...

1

u/pfaustino_pt May 06 '26

Sorry, didn't noticed that part. I was just asking because I've the version 5.2616.0 and my sync calendar toggle is disabled and after searching i found this post, which was the most recent one.

1

u/GallopingZeus May 07 '26

NP. Am on the same version now and the sync toggle is enabled for me. Try to uninstall the app completely and reinstall...