How to fix the link between Outlook and my Gmail

Question

How to fix the link between Outlook and my Gmail

Angela P 40

I have had my Squarespace (website) Gmail synced with Outlook on my desktop, but my website was recently redone with a new Squarespace template. Now Outlook isn't linking to my Gmail. How do I fix this? My web designer thought I might need "DNF Records" to add to the Squarespace domain.? Also, she mentioned maybe TXT record, MX record, and C name?? I currently have IMAP settings on my Outlook from the previous Squarespace account, so maybe that needs to be changed/updated? Help please.

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Answer 1

Jeronimo Fuerte 48,875 Independent Advisor

Hi! First, fully close Outlook. Then sign in to the affected Gmail account in a browser, open Google Account > Security > Your connections to third-party apps & services, select Microsoft apps & services, choose See details, and then Remove all access. This removes the old consent so Outlook can ask again with the correct permission prompt. Next, Open Credential Manager from the Start menu, go to Windows Credentials, scroll to Generic Credentials, and remove the entries that start with MicrosoftOffice16_Data:OAUTH2 and include tp_google_imap_Oauth2. After that, reopen Outlook and either use the Sign in via browser prompt or add the Gmail account again. During the Google sign-in page, make sure the checkbox is selected for Microsoft to read, compose, send, and permanently delete Gmail mail; that permission is what allows the connection to complete successfully.

Angela P 40 Reputation points

2026-03-16T18:25:07.1666667+00:00

Thanks for your response. Under "Third-party apps & services" it just says "0 total apps & services", and I don't see anywhere that I can "select Microsoft apps & services". Where do I find this? There isn't any plus, or add, or search availability that I can see. The large box is just empty and says "You're not connected to any third-party apps or services"
Jeronimo Fuerte 48,875 Reputation points Independent Advisor

2026-03-16T18:27:19.9933333+00:00

Share a screenshot of what you see, please
Angela P 40 Reputation points

2026-03-16T18:28:01.31+00:00

And I am signed in my Gmail account, but is there something more advance in "Sign in with Google", or is this just basic signing in the account, which I am.
Angela P 40 Reputation points

2026-03-16T18:29:55.09+00:00

GoogleScreenshot-third party apps.JPG
Angela P 40 Reputation points

2026-03-16T18:31:16.19+00:00

GoogleScreenshot-third party apps.JPG
Jeronimo Fuerte 48,875 Reputation points Independent Advisor

2026-03-16T18:35:14.66+00:00

Thank you for the screenshot, which explains it. Since the page shows 0 total apps & services, there is currently no Microsoft authorization saved in your Google account, so there is nothing there to remove yet. Simply being signed into Gmail in the browser is not the same as Outlook being authorized. Please fully close classic Outlook, open Credential Manager > Windows Credentials, remove any entries related to Google/Outlook OAuth if present, then open Outlook and add the Gmail account again so it launches a fresh Google sign-in window. During that sign-in, approve the Microsoft access prompt for Gmail. If your Gmail works normally in the web browser but not in Outlook, this points to an Outlook sign-in/authorization issue. If your custom business Gmail itself is not sending or receiving on the web, then the Squarespace domain DNS should be checked, especially the MX records for Google Workspace, because DNS affects mail routing while Outlook permissions do not.
Angela P 40 Reputation points

2026-03-16T18:47:41.6766667+00:00

Okay, I deleted the two entries "MicrosoftOffice16_Data:OAUTH2 and include tp_google_imap_Oauth2" at the Credential Manager. Now I tried to sign in via browser on my Classic Outlook, and get a denied access message...see attached.Screenshot-denied access to Google IMAP.JPG Message being denied.JPG
Angela P 40 Reputation points

2026-03-16T18:52:03.5533333+00:00

Figured it out finally! I had to close Outlook and reopen, and then sign in worked. Thanks SO MUCH for your help, and I hope you have a nice day. :)
Jeronimo Fuerte 48,875 Reputation points Independent Advisor

2026-03-16T18:53:10.91+00:00

A pleasure, have a great day!