Outlook will no longer connect with gmail

Question

Outlook will no longer connect with gmail

Troy Merrill 0

{"SessionId":"REMOVED PII","Timestamp":1791312492252,"Error":"INVALIDCREDENTIALS TEMPORARILYUNAVAILABLE"}

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2 answers

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Answer 1

For Gmail connection failures in Outlook, the supported fixes depend on whether this is an add-account problem or an existing account that stopped syncing.

Check whether IMAP is enabled in Gmail.
- In Gmail, go to Settings > Forwarding and POP/IMAP.
- Under IMAP Access, select Enable IMAP.
- Save changes.
If Outlook is trying to add the Gmail account again, complete the Google sign-in and make sure the consent box is selected for:
- Read, compose, send, and permanently delete all your email from Gmail Missing that permission can cause Outlook setup to fail.
If the Gmail account was already in Outlook and now no longer connects, force Outlook to prompt for sign-in again:
- Close Outlook.
- Open Credential Manager from the Windows Start menu.
- Go to Windows Credentials.
- Under Generic credentials, find entries that start with MicrosoftOffice16_Data:OAUTH2.
- Remove the Google IMAP-related entries.
- Reopen Outlook and sign in again when prompted.
If Outlook still cannot connect, reset the Google consent and then retry:
- Close Outlook.
- Sign in to the Google account in a browser.
- Go to Manage your Google Account > Security.
- Under Your connections to third-party apps & services, open Microsoft apps & services.
- Select See Details > Remove all access > Confirm.
- Then open Outlook again and sign in through the browser prompt.
Verify Gmail folders are available through IMAP:
- In Gmail, go to Settings > Labels.
- Make sure Show in IMAP is enabled for Inbox, Sent Mail, Trash, and All Mail.
If the issue started after a Gmail password change, Outlook may not prompt immediately.
- After a password change, it can take about one hour for the OAuth token to expire.
- After that, Outlook should prompt for sign-in again.
- Removing the stored OAuth credentials in Credential Manager can force that prompt sooner.

Answer 2

Ian-T 13,535 Microsoft External Staff Moderator

Please note that our forum is a public platform, and we will modify your question to hide your personal information in the description. Kindly ensure that you hide any personal or organizational information the next time you post an error or other details to protect personal data.

Hi @Troy Merrill

First, please feel free to check out the AI answer

Since this occurs in New Outlook for Windows, please first confirm that the Gmail account still works normally at Gmail.com. If it does, try repairing New Outlook:

Open Windows Settings > Apps > Installed apps.
Find Outlook (new) and select Advanced options.
Select Repair. If the problem remains, select Reset.
Update Outlook through Microsoft Store > Library > Get updates, then add Gmail again through Settings > Accounts > Your accounts > Add account.

If it still fails, please tell us what happens immediately after you select Allow on Google’s permission page: does the browser remain blank, return to Outlook, or display another message? Also, does the account connect successfully in another email application?

Feel free to give me an update

Troy Merrill 0 Reputation points

2026-10-07T15:07:02.48+00:00

I tried the AI suggestions. First there is nothing in the Credentials that looks like what they are suggesting. Gmail works fine through the chrome browser. IMAP has always been on. I am having trouble locating the consent box for "Read, compose, send, and permanently delete..." When trying to get into the settings for outlook by right clicking on the icon, it appears to be general windows settings, not Outlook specific settings. I am at a total loss.
Ian-T 13,535 Reputation points Microsoft External Staff Moderator

2026-10-08T00:09:59.1033333+00:00
Thank you for clarifying, and I’m sorry the earlier instructions sent you looking for options that are not present in New Outlook.

The Windows Credential Manager entries and the permission wording mentioned earlier may not appear in your setup. Also, right-clicking the Outlook icon opens Windows app settings, not Outlook’s account settings.

Please open New Outlook normally, then:

Select the Settings gear in the upper-right corner.

Select Accounts > Your accounts.

Find the Gmail account and select Manage > Remove.

Return to Your accounts, select Add account, and enter the Gmail address.

Complete the Google sign-in in the browser and select Allow when Google asks whether Microsoft apps and services can access the account.

That permission page is where consent is granted. It is not a separate setting that you can locate inside Outlook.

If the same INVALIDCREDENTIALS`` ``TEMPORARILYUNAVAILABLE error returns after completing these steps, please let us know whether the Google permission page returns you to Outlook or becomes stuck in the browser.
Troy Merrill 0 Reputation points

2026-10-08T14:11:27.4166667+00:00

When i try to open Outlook it is preloaded with my email account and only goes through a series of sign in and attempt to connect screens, i never get a place where there is a settings wheel. And all the responses refer to Outlook as "New Outlook". Is this a different app than what I have gotten from the Microsoft Store? I do not see something called "New Outlook"
Ian-T 13,535 Reputation points Microsoft External Staff Moderator

2026-10-10T23:09:52.4633333+00:00
Hi

Yes, the Outlook app preinstalled with recent Windows versions is New Outlook for Windows. The Microsoft Store may list it simply as Outlook, so you do not need to find a separate app named “New Outlook.”

Because Outlook is stuck in the initial Gmail connection screens, the main Outlook window has not opened yet, which is why you cannot reach the Settings gear. Please try reinstalling the app instead:

Close Outlook. If necessary, open Task Manager, select Microsoft Outlook, and choose End task.

Open the Windows Start menu, search for Outlook (new) or Outlook, right-click it, and select Uninstall.

Open the Microsoft Store, search for Outlook for Windows, and install it again.

Open Outlook and complete the Gmail sign-in prompts. When Google displays the permissions page, select Allow.

Reinstalling New Outlook is an official troubleshooting step when the application cannot open normally. It will not delete messages stored in Gmail.