Locked out of Windows 10 after syncing a Microsoft account (Gmail). The password works on the website but is rejected at the login screen

Question

I am experiencing a critical login issue on Windows 10 after attempting to link my local account to my Microsoft account (Gmail). Although the linking process appeared successful, the login screen now rejects my password, claiming it is incorrect. I have already verified that the password works perfectly on the Microsoft website using another device, so the credentials themselves are accurate. I have also ensured that the keyboard language is correct and that the PC has a stable internet connection at the login screen to sync the changes, but the system continues to reject both the new Microsoft password and the previous local one. I am currently locked out of my desktop and looking for a way to bypass this synchronization error or restore access to my account without losing any data.

Answer 1

Hi Amit Ophir,

Thank you for reaching out to Microsoft Q&A forum. I understand how upsetting this is when your password is correct but Windows won’t let you sign in.

I can see that Q&A Assist has already shared a few steps. To make things easier, I’ll summarize them below in a clearer order and add a couple of extra things you can try:

Step 1: Try the “Forgot password / PIN” option on the sign‑in screen

On the Windows sign‑in screen, make sure your Microsoft account (email address) is selected. Below the password or PIN box, choose “I forgot my password” or “I forgot my PIN”, and follow the on‑screen prompts. Even if your password already works on the Microsoft website, this step is important because it forces Windows to refresh the local sign‑in credentials on the device. In many cases, this alone clears up the mismatch and lets you sign in normally, without changing or removing any data.

Step 2: Sign in using Safe Mode with Networking

If the password is still being rejected, the next safest step is to try signing in through Safe Mode with Networking. This starts Windows with only essential services and can bypass whatever is blocking sign‑in in normal mode. From the sign‑in screen, select Power, then hold down the Shift key while choosing Restart. When the recovery menu appears, go to Troubleshoot > Advanced options > Startup Settings > Restart. After the PC restarts, press 5 or F5 to select Safe Mode with Networking. When you reach the sign‑in screen, enter your Microsoft account password (not the PIN). If this works, restart the PC normally and try signing in again.

Step 3: If another account exists on the device

If there’s another local or administrator account on the PC, signing in with that account can help repair the affected profile. Once signed in, check for and install any pending Windows updates, then restart and test the original account again. This can complete the account sync process that was interrupted earlier.

Step 4: Use recovery options only if needed

If you’re still unable to sign in, there are additional recovery tools available from the same Shift + Restart menu, such as Startup Repair or System Restore. These options are designed to fix sign‑in issues while keeping your personal files intact. I’d recommend avoiding a reset or reinstall unless all other options have been exhausted.

Please let me know how it goes, or if you’d like me to walk you through any of the steps in more detail. I'm here to help.

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Answer 2

Use only supported recovery and sign-in troubleshooting paths; do not attempt to bypass sign-in, as that risks data loss or security issues.

Follow these steps in order:

1. Confirm the correct sign-in method

• On the Windows 10 sign-in screen, make sure the account shown is the Microsoft account (email address) that was just linked, not the old local account.
• If multiple accounts are listed in the lower-left corner, select each one and try signing in with the appropriate credential:
  • For the Microsoft account entry, use the Microsoft account password that works on the website.
  • For any remaining local account entry, use the original local password.

2. Use the built-in password/PIN recovery options On the sign-in screen:

• If a PIN was previously set up, select Sign-in options and try the PIN.
• If the PIN fails or is unavailable, select I forgot my PIN and follow the prompts (this will use the Microsoft account to reset the PIN).
• If the password is not accepted, select I forgot my password and follow the online reset flow for the Microsoft account.

If the Microsoft account password truly works on the web but not on the device, continue with device-side troubleshooting.

3. Restart the device (including with pending updates)

• From the sign-in screen, select Power > Restart.
• If Update and restart is available, choose that so any pending updates that might affect sign-in are applied.

This can clear temporary sign-in issues that occur right after switching from a local to a Microsoft account.

4. Try signing in using Safe Mode (password only) Safe Mode uses only the password (no PIN or biometrics). If sign-in works there, it confirms the account and password are valid on the device.

To start in Safe Mode from the sign-in screen:

1. On the sign-in screen, select Power > Restart while holding the Shift key.
2. After restart, on Choose an option, select Troubleshoot > Advanced options > Startup Settings > Restart.
3. When the options list appears, select 5 or press F5 for Safe Mode with Networking.
4. At the Safe Mode sign-in screen, select the same account and enter the Microsoft account password.

If sign-in succeeds in Safe Mode:

• Once on the desktop, check for Windows updates and install them.
• Restart normally and try signing in again.

If sign-in fails even in Safe Mode, the profile or account mapping may be corrupted.

5. If the profile is corrupted or sign-in still fails From another account on the same PC (if available):

• Sign in with that other account.
• Check the problematic account under Settings > Accounts > Family & other users and verify it still exists and has the expected type (local vs Microsoft).
• If needed, create a new local administrator account, sign in with it, and then move data from the old profile folder once access is restored.

If there is no other account on the PC and Safe Mode sign-in with the Microsoft account password fails, use the official sign-in troubleshooting and recovery guidance referenced below to:

• Reset the Microsoft account password if necessary.
• Fix a corrupted user profile.
• Use the Sign-in helper if the Microsoft account itself is having sign-in issues.

These supported paths are designed to restore access without data loss. Avoid third-party tools or unsupported bypass methods, as they can corrupt the system or permanently block access to data.

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References:

• User Account Access in Windows
• Troubleshoot Problems Signing In to Windows
• Change From a Local Account to a Microsoft Account in Windows