Hey all, I am trying to troubleshoot a problem but I haven't been able to refine my keywords well enough to get a result relevant to my issue, so I am turning to the support forums. I have an organizational Microsoft/Outlook account for the university I work for that I almost exclusively access from a web browser (which I assume is Outlook on the web for business and not outlook.com, but I'm not 100% sure) and a personal Google account / Calendar. When I started this job, I added my Google account as a Personal Account via the Add a Calendar function in the browser Outlook, and it showed up fine. I had the ability to edit the events from Outlook and the Google Calendar events were factored into my availability on Outlook. However, about a month ago, the Google Calendar events stopped appearing on my Outlook calendar. The account still says it's synced, but no events appear. Past events are gone as well. I have tried: Disconnecting and reconnecting the personal account on browser Outlook (no change) Turning off my privacy and ad-blocking extensions (no change) Logging into Outlook on Chrome and Edge instead of my normal Firefox (no change) Changing the permissions on the Google Calendar in various ways, including sharing it directly with the Outlook account and making it public (no change) Going onto the Outlook app and adding it as an account there (I can see it in the app, but it does not show up on my calendar on the browser) Subscribing to the Google Calendar from browser Outlook using the private ical address on the Google Calendar (works to show me the events) Subscribing to the Google Calendar works so I can see both calendars at once, but having the personal calendar events show up as unavailable / busy automatically was extremely helpful, especially for setting up booking appointments. Because it's a subscribed calendar, the personal Google events are ignored when determining availability. When I looked this up on Microsoft Support, the help page does not say anything about syncing external calendars for Work or School accounts, just importing and subscribing. It reads to me that syncing explicitly isn't an option for browser Outlook, but this was working just a month ago for me. Is this a feature that was removed recently? Is it something I'm doing wrong on my end? I know the other solution is to just invite the Outlook calendar to all of the Google Calendar invitations individually, but I want to make sure the syncing is not fixable first. Thanks in advance for any advice or help here, I appreciate it!

Dear @Peeler, Lorant Haddock , Thank you for posting your question in the Microsoft Q&A forum. I understand you're using Outlook on the Web with a work or school account, and your personal Google Calendar used to sync and reflect your availability but recently, the events stopped showing up even though the account still appears connected. Previously, the “Add Personal Calendar” feature allowed Google Calendar events to appear in Outlook and be factored into your availability. However, as of late 2025, many users—including yourself—have reported that while the account still shows as connected, no events appear, and availability integration no longer works. I recommend you can contact support via Outlook on Web > Help > Contact Support In the meantime, here are your current options: Option 1. Subscribe via iCal (Read-Only View) You can continue subscribing to your Google Calendar using the private iCal link. This will show events in Outlook, but they won’t affect your availability or be editable from Outlook. Open your Google Calendar. On the left panel, hover over the calendar you want to share and click the three-dot menu → Settings and sharing. Scroll to Integrate calendar and copy the Secret address in iCal format. In Outlook on the Web, go to Calendar > Add calendar > Subscribe from web. Paste the iCal URL and name the calendar. Click Import. Limitations: Events are read-only in Outlook. You cannot edit Google events from Outlook. Events do not affect your availability (Scheduling Assistant ignores them). Updates from Google may take up to 24 hours to reflect in Outlook. Option 2. Manual Event Invites or Busy Blocks To ensure personal events block your availability, you can invite your work calendar to those events or manually create busy blocks in your Outlook calendar. A: Invite your work calendar When creating a Google Calendar event, add your work email as a guest. Accept the invite in Outlook to have the event appear on your work calendar. This ensures the event shows as “Busy” to others. B: Create manual busy blocks In Outlook, create a new event during your personal appointment time. Mark it as Busy or Private. You can label it generically (e.g., “Personal Appointment”) to maintain privacy. Benefits: Ensures your availability reflects personal commitments. Works reliably across all Outlook platforms. Option 3. Use Outlook Desktop or Mobile App Adding your Google account to the Outlook desktop or mobile app may allow you to view and manage both calendars in one place, though availability integration still won’t work. Steps (Desktop): Open Outlook Go to File > Add Account or Settings > Accounts > Add Account. Enter your Gmail address and sign in. Grant permission for Microsoft to access your calendar. Steps (Mobile): Open the Outlook mobile app. Go to Settings > Add Account > Add Email Account. Enter your Gmail credentials and allow calendar access. Limitations: You’ll see both calendars side-by-side. Availability integration does not occur; Google events won’t block time on your work calendar. Editing is possible, but only within the app (not in Outlook on the Web). Unfortunately, there’s no current fix to restore the previous sync behavior in Outlook on the Web. Microsoft has not officially announced the removal of this feature. If there are any updates or changes from Microsoft regarding this functionality, I’ll make sure to update you as soon as possible. Please understand that our initial response does not always resolve the issue immediately. However, with your help and more detailed information, we can work together to find a solution. I truly appreciate your patience and understanding. If you have any further questions or need further clarification, please feel free to reach out. I'm looking forward to hearing from you. Thank you for your cooperation. 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.

It appears that you are experiencing issues with syncing your Google Calendar with Outlook on the web. Based on the information available, syncing between Google Calendar and Outlook for work or school accounts is not explicitly supported in the same way that importing or subscribing to calendars is. This means that while you can subscribe to your Google Calendar and view it alongside your Outlook calendar, the integration that allows for automatic updates and availability status may not function as expected. Since you mentioned that this feature was working previously, it is possible that there have been changes or updates that affected this functionality. Unfortunately, if the syncing feature has been removed or altered, there may not be a fix on your end. The best alternative would be to continue using the subscription method or consider inviting your Outlook calendar to your Google Calendar events as a workaround. If you are looking for more information on calendar syncing capabilities, you might want to check the Microsoft support documentation or community forums for any recent updates or changes regarding this feature. References: Set up calendar syncing between Google Workspace and Microsoft Teams for your business This calendar isn't available error when a user tries to access the Calendar in Outlook on the web

I'm having this issue as well. It worked perfectly well for months and suddenly it's broken. None of the other options work well for me - I need to be able to access my Google Calendar in Outlook.

Same problem here, very frustrating! Looking forward the solution!

I am having the same issue. This is beyond frustrating, especially with failing to notify folks.

Google Calendar Syncing No Longer Working for Outlook on the Web?

Peeler, Lorant Haddock 115

Hey all, I am trying to troubleshoot a problem but I haven't been able to refine my keywords well enough to get a result relevant to my issue, so I am turning to the support forums.

I have an organizational Microsoft/Outlook account for the university I work for that I almost exclusively access from a web browser (which I assume is Outlook on the web for business and not outlook.com, but I'm not 100% sure) and a personal Google account / Calendar. When I started this job, I added my Google account as a Personal Account via the Add a Calendar function in the browser Outlook, and it showed up fine. I had the ability to edit the events from Outlook and the Google Calendar events were factored into my availability on Outlook. However, about a month ago, the Google Calendar events stopped appearing on my Outlook calendar. The account still says it's synced, but no events appear. Past events are gone as well.

I have tried:

Disconnecting and reconnecting the personal account on browser Outlook (no change)
Turning off my privacy and ad-blocking extensions (no change)
Logging into Outlook on Chrome and Edge instead of my normal Firefox (no change)
Changing the permissions on the Google Calendar in various ways, including sharing it directly with the Outlook account and making it public (no change)
Going onto the Outlook app and adding it as an account there (I can see it in the app, but it does not show up on my calendar on the browser)
Subscribing to the Google Calendar from browser Outlook using the private ical address on the Google Calendar (works to show me the events)

Subscribing to the Google Calendar works so I can see both calendars at once, but having the personal calendar events show up as unavailable / busy automatically was extremely helpful, especially for setting up booking appointments. Because it's a subscribed calendar, the personal Google events are ignored when determining availability.

When I looked this up on Microsoft Support, the help page does not say anything about syncing external calendars for Work or School accounts, just importing and subscribing. It reads to me that syncing explicitly isn't an option for browser Outlook, but this was working just a month ago for me. Is this a feature that was removed recently? Is it something I'm doing wrong on my end? I know the other solution is to just invite the Outlook calendar to all of the Google Calendar invitations individually, but I want to make sure the syncing is not fixable first.

Thanks in advance for any advice or help here, I appreciate it!

Locked Question. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

Chad 16 Reputation points

2026-01-06T03:13:58.4633333+00:00

I have also seen some bugginess with the "add a personal calendar" feature of Outlook and gave up on it. If you can't get it to work, check out CalendarBridge.
Alex Bade 0 Reputation points

2026-01-07T01:42:36.56+00:00

Same exact problem. Very frustrating. I have been able to use the subscribe work around but not being able to edit my personal calendar overlaid atop my work calendar is a huge technical inefficiency. Outlook mobile for ios seems unaffected, however. I am still able to work with both calendars on my phone and ipad.
AlexDN 11,450 Reputation points Microsoft External Staff Moderator

2026-01-07T02:20:30.6333333+00:00

Hi @Chad, @Alex Bade,

I'm really sorry for this inconvenience.
While you are still able to work with both calendars on your phone and desktop app. And there is no official confirmation from Microsoft, I recommend submit feedback so the product team can track impact and prioritize a fix (Outlook on the web > Help > Contact > Feedback).

I truly appreciate your patience and understanding.
KRISS BERGER 10 Reputation points

2026-02-17T17:12:30.0666667+00:00

Ever since and update a few weeks back, my sync with a google calendar stopped in my Outlook365. I tried deleting the calendar and creating a new one using the link from the Google calendar. It acts like it is taking the link but when i accept it, the Google calendar never show up in my calendar list in my outlook.
John3 0 Reputation points

2026-02-19T01:00:12.57+00:00

Interestingly the synch with my Google calendar is working on my web Outlook and the "new Outlook" desktop app but not completely on the classic Outlook desktop app. The classic Outlook desktop app calendar is synching invites from others but not calendar events I create myself, even if I invite myself. Any insights?
Bill Cernansky 0 Reputation points

2026-03-30T16:55:03.0066667+00:00

This has been a recurring problem for years. It just takes a while to break after subscribing to a google calendar in Outlook, so people don't realize that it's been broken this whole time. It works, and then it doesn't. Classic Microsoft (other calendars that subscribe to gcal accounts continue to work fine).
Jake L 0 Reputation points

2026-03-30T17:08:47.41+00:00

Hi @Peeler, Lorant Haddock and all, I believe I discovered a solution to my version of this problem, at least in part. At a certain point, the ICS file for my Google calendar became too large for Outlook to sync (in my case about 6.4 MB). I first tried to go back and delete many old/recurring events in my calendar (which dates back 10+ years), but this only shrunk the size by a few KB. After a bit of searching I came upon the solution described here, appending "?start-min=2026-01-01" (or your preferred, relatively recent date) to the end of the subscription link after ".ics" which allows successful syncing of the calendar by limiting the sync to more recent events.

Perhaps this solution can help others in a similar situation. If Microsoft could build in a feature to the calendar subscription menu that lets a user choose between "sync entire history" and "sync from selected date" (with opportunity to enter a date, which then appends to the end of the URL) that might also avoid future issues.

I'm not sure if/how this relates to integration of scheduling availability, but it at least solved the problem of my Google Calendar events not showing up in Outlook.
Andrea Laverty 0 Reputation points

2026-06-01T09:59:47.6733333+00:00

I'm having this issue happen now... no reason. I've never needed anything beyond displaying my Google calendar so having editability or time blocking is no big deal.
Today, outlook kept crashing and telling me the calendar was corrupt. I removed it and went to re-add it but nope. It won't even re-add the calendar! It's "successful" adding it but doesn't appear in the list. If I manually add it in the account settings for calendars, it will show up that way but can't syncronize.
This is hilarious considering Microsoft keeps trying to get me to sign up to Office 365 for business. Why would I if this is broken? What good is it to a company?

Answer accepted by question author

AlexDN 11,450 Microsoft External Staff Moderator

Dear @Peeler, Lorant Haddock,
Thank you for posting your question in the Microsoft Q&A forum. I understand you're using Outlook on the Web with a work or school account, and your personal Google Calendar used to sync and reflect your availability but recently, the events stopped showing up even though the account still appears connected.

Previously, the “Add Personal Calendar” feature allowed Google Calendar events to appear in Outlook and be factored into your availability. However, as of late 2025, many users—including yourself—have reported that while the account still shows as connected, no events appear, and availability integration no longer works. I recommend you can contact support via Outlook on Web > Help > Contact Support

User's image

In the meantime, here are your current options:

Option 1. Subscribe via iCal (Read-Only View)

You can continue subscribing to your Google Calendar using the private iCal link. This will show events in Outlook, but they won’t affect your availability or be editable from Outlook.

Open your Google Calendar.
On the left panel, hover over the calendar you want to share and click the three-dot menu → Settings and sharing.
Scroll to Integrate calendar and copy the Secret address in iCal format.
In Outlook on the Web, go to Calendar > Add calendar > Subscribe from web.
Paste the iCal URL and name the calendar.
Click Import.

Limitations:

Events are read-only in Outlook.
You cannot edit Google events from Outlook.
Events do not affect your availability (Scheduling Assistant ignores them).
Updates from Google may take up to 24 hours to reflect in Outlook.

Option 2. Manual Event Invites or Busy Blocks

To ensure personal events block your availability, you can invite your work calendar to those events or manually create busy blocks in your Outlook calendar.

A: Invite your work calendar

When creating a Google Calendar event, add your work email as a guest.
Accept the invite in Outlook to have the event appear on your work calendar.
This ensures the event shows as “Busy” to others.

B: Create manual busy blocks

In Outlook, create a new event during your personal appointment time.
Mark it as Busy or Private.
You can label it generically (e.g., “Personal Appointment”) to maintain privacy.

Benefits:

Ensures your availability reflects personal commitments.
Works reliably across all Outlook platforms.

Option 3. Use Outlook Desktop or Mobile App

Adding your Google account to the Outlook desktop or mobile app may allow you to view and manage both calendars in one place, though availability integration still won’t work.

Steps (Desktop):

Open Outlook
Go to File > Add Account or Settings > Accounts > Add Account.
Enter your Gmail address and sign in.
Grant permission for Microsoft to access your calendar.

Steps (Mobile):

Open the Outlook mobile app.
Go to Settings > Add Account > Add Email Account.
Enter your Gmail credentials and allow calendar access.

Limitations:

You’ll see both calendars side-by-side.
Availability integration does not occur; Google events won’t block time on your work calendar.
Editing is possible, but only within the app (not in Outlook on the Web).

Unfortunately, there’s no current fix to restore the previous sync behavior in Outlook on the Web. Microsoft has not officially announced the removal of this feature. If there are any updates or changes from Microsoft regarding this functionality, I’ll make sure to update you as soon as possible.

Please understand that our initial response does not always resolve the issue immediately. However, with your help and more detailed information, we can work together to find a solution.

I truly appreciate your patience and understanding. If you have any further questions or need further clarification, please feel free to reach out. I'm looking forward to hearing from you.

Thank you for your cooperation.

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.

Peeler, Lorant Haddock 115 Reputation points

2026-01-05T17:25:05.4966667+00:00

Hi, thank you so much for the response. Sucks to see that it seems to just be a removed feature, especially if it wasn't announced ahead of time. Appreciate your time!
AlexDN 11,450 Reputation points Microsoft External Staff Moderator

2026-01-06T04:17:48.2033333+00:00

Hi @Peeler, Lorant Haddock,
Because there isn’t official confirmation yet, the best next step is to submit feedback so the product team can track impact and prioritize a fix (Outlook on the web > Help > Contact Support / Feedback).
I truly appreciate your patience and understanding. If you have any further questions or need further clarification, please feel free to reach out.

Thank you for your cooperation.
Steve K13 0 Reputation points

2026-03-31T08:58:50.82+00:00

It worked for me but the key was to subscribe using the web version of "new" Outlook (and not trying to subscribe via the desktop PC app version).

8 additional answers

AI answer

2026-01-02T22:48:42.9066667+00:00
It appears that you are experiencing issues with syncing your Google Calendar with Outlook on the web. Based on the information available, syncing between Google Calendar and Outlook for work or school accounts is not explicitly supported in the same way that importing or subscribing to calendars is. This means that while you can subscribe to your Google Calendar and view it alongside your Outlook calendar, the integration that allows for automatic updates and availability status may not function as expected.

Since you mentioned that this feature was working previously, it is possible that there have been changes or updates that affected this functionality. Unfortunately, if the syncing feature has been removed or altered, there may not be a fix on your end. The best alternative would be to continue using the subscription method or consider inviting your Outlook calendar to your Google Calendar events as a workaround.

If you are looking for more information on calendar syncing capabilities, you might want to check the Microsoft support documentation or community forums for any recent updates or changes regarding this feature.

References:

Set up calendar syncing between Google Workspace and Microsoft Teams for your business

This calendar isn't available error when a user tries to access the Calendar in Outlook on the web
AI-generated content may be incorrect. Read our transparency notes for more information.
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2 people found this answer helpful.
Andrew 5 Reputation points

2026-01-08T16:31:05.12+00:00

I'm having this issue as well. It worked perfectly well for months and suddenly it's broken. None of the other options work well for me - I need to be able to access my Google Calendar in Outlook.
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Pásztor Ádám 5 Reputation points

2026-01-08T20:47:12.3166667+00:00

Same problem here, very frustrating! Looking forward the solution!
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1 person found this answer helpful.
Dan Krentzman 0 Reputation points

2026-01-09T22:35:27.28+00:00

Same problem. It all worked fine until a couple days ago, then I started getting error messages. Now my desktop Outlook app keeps trying to repair itself. I removed the Gmail calendar, but now I cannot add it back in.
Dr. Dennis L. Rudnick 5 Reputation points

2026-01-09T16:46:13.4033333+00:00

I am having the same issue. This is beyond frustrating, especially with failing to notify folks.
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