Outlook iOS and Google calendar sync issues

Question

Outlook iOS and Google calendar sync issues

MSS 20

Outlook for ios will not sync with events created on google calendar in a browser. Hoevever, the events created directly in outlook for ios will immediately sync with the google calendar in the browser. Email syncs seamlessly.
How can I correct this so sync is two way? I can´t miss appointments simply because they were created or accepted on Google calendar on my PC.

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Answer 1

James Brice 80

I just want to chime in and say I'm having the same Sync issue with one of my clients.

I think it's a global issue that started this week with an update.

MSS 20 Reputation points

2025-07-25T14:49:21.5866667+00:00

probably correct since the situation seems to be isolated to recent events and is now not happening .
MU Agency 0 Reputation points

2025-11-26T14:15:30.69+00:00

November 2025 still an issue. If I go native Apple tools to sync with their built in calendar app and email it works, but outlook just broke. It's email worked fine, but the calendar does not. I've done all of the steps listed here and still seeing the issue. Will this be addressed or should we switch away from MS software?

Answer 2

Stefan Blom 339.2K MVP Volunteer Moderator

I believe you can subscribe to the Google Calendar in Outlook on the web. See https://support.microsoft.com/en-us/office/import-or-subscribe-to-a-calendar-in-outlook-com-or-outlook-on-the-web-cff1429c-5af6-41ec-a5b4-74f2c278e98c .

The idea is that the subscribed calendar will then display in Outlook for Mac and possibly also in Outlook for iOS.

MSS 20 Reputation points

2025-07-25T14:12:36.01+00:00

Okay. So, I did this in new Outlook, and while it technically did not solve the problem of the missing meetings, at least now, when adding items to the laptop calendar in new Outlook, they sync with Outlook iOS and vice versa. The pre-accepted meetings that show on my Google calendar but not the phone, also do not show up here, but again, new ones do. So, I´m going to chalk it up as some sort of glitch that will not affect things going forward.

So while the actual issue of missing meetings is not resolved, going forward, I think it should be correct.

Thanks!
Stefan Blom 339.2K Reputation points MVP Volunteer Moderator

2025-07-25T23:49:54.03+00:00

Thanks for the follow-up. You may want to post feedback for Microsoft regarding this, for example by using the portal at https://feedbackportal.microsoft.com/feedback/forum/89a8afa3-2e1c-ec11-b6e7-0022481f8472 .

Answer 3

Chloe-L 12,780 Microsoft External Staff Moderator

Hello MSS,

Thanks for using Microsoft product and posting in the Microsoft Q&A.

I realize that you've encountered a problem with the one-way sync issue between Outlook for iOS and Google Calendar, I understand how you feel. This indicates a specific issue with Google Calendar sending updates to Outlook iOS.

Here are the most common reasons for this specific problem and how to fix them:

1. Re-add Your Google Account in Outlook app

Open the Outlook app on your iOS device.
Tap your account icon (usually top-left, might be a photo or initials).
Tap the gear icon (Settings) in the bottom left of the account pane.
Under "Mail Accounts," tap the Google account that's having sync issues.
Tap "Delete Account." Confirm you want to delete it.
Close the Outlook app completely: Swipe up from the bottom of your screen (or double-tap the Home button on older iPhones) to see open apps, then swipe the Outlook app upwards to dismiss it.
Restart your iPhone.
Reopen the Outlook app.
Tap your account icon (top-left).
Tap "Add Mail Account."
Enter your Google email address and follow the prompts to sign back into your Google account. Ensure you grant all necessary permissions when prompted.

2. Verify Google Account Permissions & Outlook Access

On your computer, open a web browser and go to your Google Account security page: https://myaccount.google.com/security.
Log in to the Google account that's linked to Outlook iOS.
Scroll down to "Third-party apps with account access."
Find "Microsoft Outlook" in the list.
Ensure it has access, specifically for Calendar. If you see an option to "Review access" or "Revoke access," you can try revoking it and then re-adding the account in Outlook for iOS (as in Solution 1) to force a fresh permission grant.
Check iOS App Permissions (for Calendar):
- On your iPhone, go to Settings > Outlook.
- Ensure "Calendars" is enabled (toggled on) in the permissions list.

3. Ensure "Calendars" is Enabled for the Account in Outlook iOS

Within the Outlook app itself, you can choose which components (mail, calendar, contacts) sync for each account.

Open the Outlook app on your iOS device > account icon (top-left)> gear icon (Settings).
Tap the Google account that's having issues.
Ensure the "Calendars" toggle is enabled (green). If it's off, turn it on. If it's on, try toggling it off, waiting a few seconds, and then toggling it back on

4. Update your Outlook app to the latest version

Please try these steps and let me know how it goes. If you have any other questions or need help with something else in the meantime, I'm here for you.

Best regards

Chloe L. | Microsoft Q&A Support Specialist

MSS 20 Reputation points

2025-07-24T22:29:41.42+00:00
Thanks. Tried everything to no avail:

Re-add Your Google Account in the Outlook app

Did this two or three times, and it didn't change anything. Only the appointments I had already on the phone or created on the phone show on the ios app

Verify Google Account Permissions & Outlook Access

Contrary to the directive, "outlook" does not appear in this list. Microsoft services do. Calendar seemed to be enabled, although there is no option to "Review access" or "Revoke access,". Instead, I deleted Microsoft's access and then re-added my Gmail account to Outlook iOS. Same issue as before.

There is no ¨settings outlook¨anymore so this instruction is outdated "Check iOS App Permissions (for Calendar):

On your iPhone, go to Settings > Outlook.

Doesn't exist. It's Settings-apps-outlook. This setting has no option to enable or disable calendars.

Ensure "Calendars" is enabled (toggled on) in the permissions list.

As stated, this toggle doesn't exist.

Ensure "Calendars" is Enabled for the Account in Outlook iOS Within the Outlook app itself, you can choose which components (mail, calendar, contacts) sync for each account.

No actually, you can´t. There is no toggle for this in the most updated Outlook for IOS app.

Update your Outlook app to the latest version

Done. I deleted Outlook iOS and redownloaded it, so I have the latest version.

I appreciate the help. Perhaps there is something else we can try?
Chloe-L 12,780 Reputation points Microsoft External Staff Moderator

2025-07-24T22:52:14.23+00:00
Hi MSS,

For another effective way is you need to subscribe to Google Calendar from the Outlook Web for it to show in your Outlook for iOS, and I believe it is the main reason for your issue. Here are the steps:

In your Google Calendar account, select My Calendars and choose the vertical ellipsis (⋮) to the right of the calendar name.

Select Settings and sharing, scroll down to Integrate Calendar, and in the Secret address in iCal format box, select the Copy To Clipboard button.

Switch to your Outlook calendar on your computer

Below the calendar grid on the left, select Add calendar, then select Subscribe from web.

Paste the copied URL into the address bar, put a name for it, then select Import.

For detailed information, you can refer to this Microsoft article: See your Google Calendar in Outlook

Please try and tell me how it goes.

Best regards

Chloe L. | Microsoft Q&A Support Specialist
JB 0 Reputation points

2025-07-26T15:22:45.7+00:00

Glad to know that I am not going crazy. I have spent many hours over the past couple of days trying to address the same problem. I have tried every suggestion listed by Support, multiple times. Please post if there is a fix but it sounds like we are at the mercy of others to fix the syncing issue because it is a recent software problem.
MSS 20 Reputation points

2025-07-26T17:36:13.26+00:00

I had the people who set the meetings, that were showing in google cal but not outlook, cancel and reinstate the meetings. The reinstated meetings showed up across platforms.

i also tried to set up test meetings from my phone in outlook iOS to see if they would show in outlook desktop and they did. And vice versa. So going forward it seems to be corrected.

the only other thing I did that may be connected is that I deleted then reinstated my gmail account on new outlook (web version) on my laptop.

I cannot imagine that would have done anything to correct the issue but try it. It may have been a catalyst.

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Outlook iOS and Google calendar sync issues

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