cannot set up my gmail account in outlook

Question

cannot set up my gmail account in outlook

Sam Modica 45

I was having a repeated error with outlook trying to login to my email account, i kept getting the error code 0X800CCC0E. I ended up deleting my email account and now i cannot set it up again. I have been using the email ******@gmail.com for several years with no problems until recently.

please help, as of now, i cannot get my email.

Sincerely,

Sam Modica

GHL 0 Reputation points

2026-03-13T17:46:56.05+00:00

Exact same question as Sam, exact same error message. Problem started after a Windows update 3 days ago. Tried going back to a previous restore point, tried removing Gmail from outlook, tried deleting a couple of registry keys as recommended on a Microsoft Support site after searching for 0x800CCC0E Gmail issues. Help site says "The Outlook Team is investigating this issue". Please investigate faster....I'm on day 4 without being able to download email. See: https://support.microsoft.com/en-us/office/users-get-errors-0x800ccc0e-0x800ccc0f-synchronizing-gmail-and-yahoo-accounts-in-classic-outlook-e5a7b684-7c5c-4848-ab2d-d48291451f67
Hornblower409 15,815 Reputation points

2026-03-14T11:32:38.1633333+00:00

@GHL said

tried deleting a couple of registry keys as recommended on a Microsoft Support

If the Registry Edit workaround didn't fix the problem for you, there is a another workaround you can try in

https://support.microsoft.com/en-us/office/unable-to-add-a-gmail-account-to-classic-outlook-4d9530c5-3f40-4e6d-9b45-4477f160828f

This one is about Clearing the Windows Credentials directly instead of editing the Registry.
GHL 0 Reputation points

2026-03-14T16:48:51.81+00:00

Hornblower, using the credential manager worked, thanks. Unfortunately I'd already removed my Gmail account and in doing so inadvertently lost my entire Calendar and Tasks contents....**&%^#^%!*
Hornblower409 15,815 Reputation points

2026-03-14T20:51:10.94+00:00

@GHL said

I'd already removed my Gmail account and in doing so inadvertently lost my entire Calendar and Tasks

Everyone (myself included) forgets that in a Classic Outlook/GMail IMAP setup, only your emails are synced with the server. Outlook Contacts, Calendar, Task, etc. are all in "This Computer Only" folders stored in the account OST file.

Recovery Options

Export from the OST - See "Recover Calendar and Contacts from an IMAP ost-file" in
https://robert365.com/article/do-not-risk-losing-your-contacts-and-calendar-when-using-imap

If there is any useable data in your GMail account (not very likely)

Export your GMail contacts and import into Outlook
https://support.microsoft.com/en-us/office/import-gmail-contacts-to-outlook-edbacfde-f48c-49da-a6a3-bcbb8f4f4819

Import your Google calendar
https://support.microsoft.com/en-us/office/see-your-google-calendar-in-outlook-c1dab514-0ad4-4811-824a-7d02c5e77126#picktab=classic_outlook

Prevention

To stop this from happening next time you remove a GMail account - create a new PST and make it your Default Data file. From there on Contacts, Calendar, Task, etc. that would have gone into the GMail OST are now in their own, separate, PST file that is not connected to any email account.

Start with "Create a local pst file" in these instruction or watch the video.
https://www.slipstick.com/outlook/calendar/appointments-saved-wrong-calendar

1 answer

Your answer

GHL 0 Reputation points

2026-03-13T17:46:56.05+00:00

Exact same question as Sam, exact same error message. Problem started after a Windows update 3 days ago. Tried going back to a previous restore point, tried removing Gmail from outlook, tried deleting a couple of registry keys as recommended on a Microsoft Support site after searching for 0x800CCC0E Gmail issues. Help site says "The Outlook Team is investigating this issue". Please investigate faster....I'm on day 4 without being able to download email. See: https://support.microsoft.com/en-us/office/users-get-errors-0x800ccc0e-0x800ccc0f-synchronizing-gmail-and-yahoo-accounts-in-classic-outlook-e5a7b684-7c5c-4848-ab2d-d48291451f67
Hornblower409 15,815 Reputation points

2026-03-14T11:32:38.1633333+00:00

@GHL said

tried deleting a couple of registry keys as recommended on a Microsoft Support

If the Registry Edit workaround didn't fix the problem for you, there is a another workaround you can try in

https://support.microsoft.com/en-us/office/unable-to-add-a-gmail-account-to-classic-outlook-4d9530c5-3f40-4e6d-9b45-4477f160828f

This one is about Clearing the Windows Credentials directly instead of editing the Registry.
GHL 0 Reputation points

2026-03-14T16:48:51.81+00:00

Hornblower, using the credential manager worked, thanks. Unfortunately I'd already removed my Gmail account and in doing so inadvertently lost my entire Calendar and Tasks contents....**&%^#^%!*
Hornblower409 15,815 Reputation points

2026-03-14T20:51:10.94+00:00

@GHL said

I'd already removed my Gmail account and in doing so inadvertently lost my entire Calendar and Tasks

Everyone (myself included) forgets that in a Classic Outlook/GMail IMAP setup, only your emails are synced with the server. Outlook Contacts, Calendar, Task, etc. are all in "This Computer Only" folders stored in the account OST file.

Recovery Options

Export from the OST - See "Recover Calendar and Contacts from an IMAP ost-file" in
https://robert365.com/article/do-not-risk-losing-your-contacts-and-calendar-when-using-imap

If there is any useable data in your GMail account (not very likely)

Export your GMail contacts and import into Outlook
https://support.microsoft.com/en-us/office/import-gmail-contacts-to-outlook-edbacfde-f48c-49da-a6a3-bcbb8f4f4819

Import your Google calendar
https://support.microsoft.com/en-us/office/see-your-google-calendar-in-outlook-c1dab514-0ad4-4811-824a-7d02c5e77126#picktab=classic_outlook

Prevention

To stop this from happening next time you remove a GMail account - create a new PST and make it your Default Data file. From there on Contacts, Calendar, Task, etc. that would have gone into the GMail OST are now in their own, separate, PST file that is not connected to any email account.

Start with "Create a local pst file" in these instruction or watch the video.
https://www.slipstick.com/outlook/calendar/appointments-saved-wrong-calendar

Answer 1

Follow these steps to get the Gmail account working again in classic Outlook.

Confirm Outlook is on a fixed build

For classic Outlook issues with Gmail and error 0x800CCC0E, there is a known problem that has been fixed in recent builds.
In Outlook, go to File > Office Account > About Outlook and confirm the version/build is at or newer than the fixed builds mentioned in the articles (for example, Current Channel Version 2404 Build 17531.10000 or later for Gmail sign-in fixes, and Version 2412 Build 18324.20168 or later for the “Retry” Gmail consent fix).
If not current, choose Update Options > Update Now on the Office Account page, let Office update, then restart Outlook.

Re-add the Gmail account using the new sign-in flow

In classic Outlook, go to File > Account Settings > Account Settings… > Email > New.
Choose Google (or IMAP/POP if prompted) and enter the Gmail address.
A browser window should open for Google sign-in (this is part of the fix for “browser or app may not be secure” and IMAP setup errors).
Sign in with the Gmail credentials.
When prompted with Microsoft apps & services can access, make sure the permission “Read, compose, send, and permanently delete all your email from Gmail.” is checked, then select Allow.
If the account was added previously without that box checked and Outlook shows an error, use the Retry link in the error window to repeat the browser sign-in and this time check that permission.

Ensure IMAP is enabled in Gmail If Outlook still cannot connect and shows 0x800CCC0E or “We weren’t able to set up your Google account with IMAP”:

In a browser, sign in to Gmail.
Open Settings > See all settings > Forwarding and POP/IMAP.
Under IMAP access, select Enable IMAP.
Select Save Changes.

Verify server settings if adding manually If Outlook asks for manual settings, use:

Incoming (IMAP): imap.gmail.com, SSL required, Port 993
Outgoing (SMTP): smtp.gmail.com, SSL or TLS required, Authentication required
- Port 465 for SSL, or 587 for TLS/STARTTLS
User name: full Gmail address
Password: Gmail password (or app password if using that method)

If still stuck in a loop

Remove the partially added Gmail profile from File > Account Settings > Account Settings….
Close Outlook, reopen it, and repeat steps 2–4.

If these steps are followed (updated Outlook, IMAP enabled, correct consent granted, and correct IMAP/SMTP settings), the Gmail account should add successfully and mail should sync again.

References: