Gmail personal calendar not working in Outlook web

Question

Gmail personal calendar not working in Outlook web

Lele Crdo 35

My connected Gmail calendar suddenly stopped appearing in the web calendar view. In Settings → Accounts, I’ve reconnected my personal Gmail multiple times. It shows as “connected” and the email appears in the left-hand list, but there’s no calendar under it to turn on or off.

This was working fine until a couple of days ago. Previously, a “Calendar” item appeared under that Gmail account with a toggle, but that option is now missing. The account links successfully, but no calendars show up at all. Moved from Outlook | Web | Outlook on the web for business | Calendar

Answer accepted by question author

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Answer 1

Dear users,

Regarding this issue, @Lele Crdo identified a solution that successfully enabled the addition of a personal Gmail calendar.

The Solution: Instead of using the "Add Personal Calendar" feature (which simply links the calendar via a web URL), the working fix is to add the Google account as a fully synchronized account. This connection type is more stable compared to the browser-based calendar link.

Here are the steps to apply:

Open Outlook.
Go to File > Add Account (Classic Outlook) or Settings > Accounts > Add Account (New Outlook).
Enter your Gmail address and click Connect.
A Google sign-in window will appear. Enter your password and allow Microsoft apps to access your Google account.
Result: Your Google Calendar will now appear in your Calendar view (usually under a separate header matching your Gmail address), fully synced and editable.

Answer 2

It seems that the issue you are experiencing with your connected Gmail calendar not appearing in Outlook on the web could be related to the removal of the ability to add new accounts using the Connected accounts feature, which was discontinued in September 2018. To troubleshoot this issue, ensure that your Gmail account is properly prepared for connection to Outlook. This includes enabling IMAP and possibly creating an app password if you have two-step verification enabled on your Gmail account.

Here are some steps you can take:

Check IMAP Settings: Make sure that IMAP is enabled in your Gmail account settings. You can do this by signing into your Gmail account, going to Settings → Forwarding and POP/IMAP, and ensuring that "Enable IMAP" is selected.
Recheck Account Connection: Since you have already reconnected your Gmail account multiple times, consider removing it entirely from Outlook on the web and then adding it back again to see if that resolves the issue.
Check for Updates: Ensure that your browser is up to date, as sometimes browser issues can affect how Outlook on the web displays connected accounts.
Contact Support: If the issue persists, consider reaching out to Microsoft 365 Support for further assistance.

These steps should help you troubleshoot the problem with your Gmail calendar not appearing in Outlook on the web.

Answer 3

Chloe-L 6,175 Microsoft External Staff Moderator

Hello Lele Crdo,

Thank you for posting your question to Microsoft Q&A and for your patience while we investigate why your Gmail calendar has disappeared from Outlook on the Web.

Based on the behavior you described where the account connects but the specific "Calendar" toggle is missing, it appears that the synchronization link between the two services needs to be fully reset rather than just updated.

Please follow these specific steps to force a fresh connection for the calendar data:

Phase 1: Remove the Account completely

Open Outlook on the Web.
Go to Settings (Gear icon) > Mail > Attachment > Storage Accounts.
If your Gmail account is listed here, delete/remove it.
Next, go to Settings > Mail > Sync Email.
Hover over your Gmail account and select the Delete (Trash can) icon to remove the connected account entirely.
Important: Log out of Outlook Web and close your browser window.

Phase 2: Revoke Permissions

Open a new browser window and log in to your Google Account (myaccount.google.com). Disclaimer: This is a non-Microsoft website. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products).
Navigate to Data & Privacy > Apps and services.
Look for "Microsoft apps & services" or "Outlook".
Select it and choose "Delete all connections that you have with Microsoft apps & services." (This ensures that when we reconnect, Google asks for permission to see your Calendar again).

Phase 3: Reconnect

Open Outlook on the Web again.
Go to the Calendar view.
Click "Add Calendar" > "Add personal calendars".
Select Google and follow the login prompt.
Crucial: When the Google permission screen pops up, ensure you check the boxes allowing Microsoft access to your calendar.

Once the process finishes, it may take up to 15 minutes for the calendar events to populate. If the issue persists even after this full reset, please let me know so we can investigate further.

If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

Lele Crdo 35 Reputation points

2025-12-04T07:45:10.18+00:00

Hello Chloe-L,
after following your suggestions nothing changed and i still experience the same issue
Is there anything that could help me
Chloe-L 6,175 Reputation points Microsoft External Staff Moderator

2025-12-04T17:32:28.9566667+00:00
Hi Lele Crdo,

Thank you for the screenshot. The message "connected to your work account" is the crucial clue. This means your company's IT department is controlling which features are available to you. It is highly possible your IT Admin recently updated a policy called OwaMailboxPolicy to disable Personal Calendars.

To confirm this diagnosis and identify the specific policy error that is blocking the feature, please help us capture the browser's console log.

Please follow these steps on the "Add personal calendars" page:

Press F12 on your keyboard (or right-click anywhere and select Inspect).

Click the Console tab at the top of the panel that opens.

Refresh the page (F5) to force the errors to reload.

Look for any Red text or error messages in that Console window.

Security Note: If you see red errors, please take a screenshot of them. Do not upload it here, as this is a public community forum and the log may contain sensitive organizational data. Please send the image via the private message function instead.

Best regards,
Lele Crdo 35 Reputation points

2025-12-04T17:50:16.2833333+00:00

I see a lof of red messages, should i look for something particular?
Chloe-L 6,175 Reputation points Microsoft External Staff Moderator

2025-12-04T18:02:50.8366667+00:00
Hi Lele Crdo,

Please scan the red messages for any of the following words or codes:

"403" or "Forbidden"

Meaning: Your browser is trying to ask for the calendar, but the server is saying "You aren't allowed."

"Policy" or "OwaMailboxPolicy"

Meaning: Your company's IT settings are explicitly blocking personal calendars.

"CORS" or "Access-Control-Allow-Origin"

Meaning: A security mismatch between Google and Microsoft's servers.

"500"

Meaning: The Microsoft server crashed while trying to process your request.

When typing the word Policy in the "Filter" box (top left of the Console), does anything red appear that mentions "OwaMailboxPolicy" or "PersonalCalendar"?
Lele Crdo 35 Reputation points

2025-12-05T14:41:37.75+00:00

Hi @Chloe-L
i don't see any private message option to send the screenshot
Chloe-L 6,175 Reputation points Microsoft External Staff Moderator

2025-12-05T17:13:22.76+00:00

Dear Lele Crdo,

Could you please confirm whether you can see the notice at the top of your question? Alternatively, you may check your notifications to verify if my message has been received.

Best regards,
Chloe-L 6,175 Reputation points Microsoft External Staff Moderator

2025-12-05T18:59:04.5033333+00:00
Hi Lele,

Thank you for your patience as we work through this. Since the standard settings we checked look correct but the issue persists, I’d like to gather a network log (called a HAR file).

This file records the background communication between your browser and the server. It will allow me to see the exact error stopping the calendar list from loading, which the standard logs might miss.

It looks a bit technical, but it is quite straightforward. Could you please follow these steps on your Mac (using Chrome or Edge):

Navigate to the 'Add personal calendars' page where the list is missing.

Right-click anywhere on the page and select Inspect, or press Cmd + Option + I on your keyboard.

In the panel that opens, click the Network tab at the top.

Look for a small Record button (circle icon) in the top-left of that panel—ensure it is Red (recording).

Refresh the page (Cmd + R) while this panel is open.

Wait for the page to finish loading (and for the calendar list to fail/not appear).

In the Network panel, look for a Download arrow or right-click anywhere in the list of files and select 'Save all as HAR with content'.

Please save that file and attach it to your reply. I can then analyze the specific server response and advise on the next step.
Lele Crdo 35 Reputation points

2025-12-09T10:51:09.81+00:00

Hi @Chloe-L
i don't see anymore the option to send the HAR in a private message
Chloe-L 6,175 Reputation points Microsoft External Staff Moderator

2025-12-10T18:57:46.89+00:00

Hello Lele Crdo

Please accept my sincerest apologies for the delayed reply.

In your chat box, you can send the file by clicking on the paperclip icon. Kindly note that the maximum allowed file size is 3 MB. Before sending it over, please compress (zip) the HAR file first by right‑clicking the file and selecting Compress. Once done, you can attach and send it.

If you encounter any issues during the process, please let me know and I’ll be glad to assist.

Best regards,
Lele Crdo 35 Reputation points

2025-12-11T13:11:20.3133333+00:00

Hi @Chloe-L
I'm very sorry but the file it's more than 16MB....
Chloe-L 6,175 Reputation points Microsoft External Staff Moderator

2025-12-11T16:39:39.91+00:00

Hello Lele Crdo,

Since the file is too large to be sent directly, you can consider uploading it to Google Drive, Dropbox, or another cloud service and sharing the link with me via private message. When you share the link, kindly ensure the access settings allow me to view the file.

Best regards,
Bart Lanzillotti 0 Reputation points

2025-12-30T16:23:45.8+00:00

@Chloe-L I am having and have been having this issue for months. Nothing has changed policy wise in our m365 tennant. I am the administrator. But for the life of me I can not get my personal Gmail account to show up and work in our hosted outlook online.
Chloe-L 6,175 Reputation points Microsoft External Staff Moderator

2026-01-02T00:33:30.99+00:00

Hello Bart Lanzillotti,

I am very sorry to hear that you have been dealing with this issue for months without a solution. I understand how frustrating it is to search for answers for that long.

Since you mentioned you are the Admin, this indicates you are working within a Microsoft 365 Business / Exchange environment. The troubleshooting steps for server-side configurations are quite different from personal Outlook accounts and require specific expertise.

To ensure you get the best support from experts who specialize in server-side configurations, I highly recommend you create a new question with the correct tags. When posting, please make sure to select the "For Business" or "Exchange" category.

I hope this direction gets your query in front of the right audience (who are also Exchange Administrators) or Exchange-specialized agents who can better assist you. I truly hope they can come up with the right solution for you soon.

Best regards,

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Gmail personal calendar not working in Outlook web

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