Resolve Google Sign-In Error on Single Computer When 2FA is Enabled

draft · accounts-and-access account-lockout2fa

Generated by docuprocessor (prompt article/v3) · 2026-04-22 05:22

Source thread

thread_id: spaces/AAAA05BdS6s/threads/dw3DjckMBkQ · 14 msgs · first 2024-03-12 · participants: Tech ATech BTech C

Tech A 2024-03-12 13:26

Hey guys! Im getting this error in only 1 computer, it's working in another comptuers at the same office. Any idea? I already tried with another browser to avoid cache isuses

image/png image.png

Google sign-in page displaying the error message **"Couldn't sign in"** for the account **treatment@dddentalnyc.com**. A secondary message reads: **"Contact your domain admin for help. Learn more."** No error codes, indicator lights, or hardware elements are present.

Tech A 2024-03-12 13:27

Looks like the computer is not being recognized as trustable, but not sure why

Tech B 2024-03-12 13:29

Are they using context aware security?

Tech B 2024-03-12 13:30

or Login challenge

Tech A 2024-03-12 13:31

Nope

Tech B 2024-03-12 13:34

Have you tried logging to chrome browser as this user and then to gmail?

Tech A 2024-03-12 13:36

Yes

Tech C 2024-03-12 13:42

how about using a different browser?

Tech A 2024-03-12 13:44

I had to disable 2fa to be able to log in

Tech A 2024-03-12 13:44

She told me that she doesn't want to use 2fa

Tech A 2024-03-12 13:45

no other accounts has 2fa, of course I prefer that they use it

Tech A 2024-03-12 13:45

but she told me that they dont want to

Tech A 2024-03-12 13:45

(no text)

Tech A 2024-03-12 13:48

anyways, I advised her to enable it.. she will ask the dr

---
title: "Resolve Google Sign-In Error on Single Computer When 2FA is Enabled"
category: accounts-and-access
tags: ["account-lockout", "2fa"]
source_thread_id: "spaces/AAAA05BdS6s/threads/dw3DjckMBkQ"
source_space: "spaces/AAAA05BdS6s"
generated_at: "2026-04-22T05:22:13"
participants: ["Tech A", "Tech B", "Tech C"]
---

# Resolve Google Sign-In Error on Single Computer When 2FA is Enabled

## Problem
A Google account (treatment@dddentalnyc.com) displays "Couldn't sign in" error with message "Contact your domain admin for help" on one computer, while the same account works normally on other computers in the same office. The error occurs even when using different browsers to avoid cache issues. The computer appears to not be recognized as trustable by Google's authentication system.

## Resolution
1. Temporarily disable two-factor authentication (2FA) on the affected Google account
2. Attempt to sign in again on the problematic computer
3. Once access is restored, re-enable 2FA if desired by the user
4. Consider enabling 2FA across all accounts for improved security, pending user approval

Note: The root cause of why one specific computer was not recognized as trustable was not determined during troubleshooting.

## References
- Source discussion: `spaces/AAAA05BdS6s/threads/dw3DjckMBkQ`
- Attachments: - ![image.png](../attachments/dw3DjckMBkQ.dw3DjckMBkQ/image.png) — Google sign-in page displaying the error message **"Couldn't sign in"** for the account **treatment@dddentalnyc.com**. A secondary message reads: **"Contact your domain admin for help. Learn more."** No error codes, indicator lights, or hardware elements are present.

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