Can't open Gmail

Welcome Michael Harper,

Thanks for reaching out to Microsoft Q&A Forum. I understand that when you try to sign in to Gmail through Microsoft Edge on Windows 10, you are prompted for a passkey and then receive the message “can't access Microsoft Password Manager.”

• Could you please confirm whether this happens only when signing in to Gmail, or also on other websites that use passkeys?
• Also, are you using Microsoft Edge's built-in password/passkey manager, or another password manager extension?

In the meantime, you can try these steps:

1, Check Microsoft Edge password manager

• Open Edge > go to Settings > Passwords and autofill > Microsoft Password Manager
• Check whether Password Manager opens normally
• If prompted, verify your Windows PIN or device credentials

2, Try signing in without the passkey

• On the Google sign-in page, select Try another way if available
• Choose another sign-in method, such as your Gmail password or another verification option
• Once signed in, you can review the passkeys associated with the Google account

3, Test with an InPrivate window

• Press Ctrl + Shift + N in Edge
• Open Gmail and try signing in again
• If it works there, the issue may be related to the existing Edge profile, extension, or stored site data

4, Temporarily disable password-manager extensions

• Go to Edge > Extensions > Manage extensions
• Temporarily turn off any third-party password-manager extensions
• Restart Edge and test the Gmail sign-in again

Looking forward to your update.