I have a Windows 11 laptop with Firefox installed as my primary web browser, and Brave as backup. I logged into a company Google account on my Android 12 phone, adding it as a Google Account under the Accounts settings page, and that worked just fine. I opened a mobile web browser (Firefox for Android), navigated to Google.com, and signed in, and that worked just fine.
On my laptop, however, when I try to log in to Google.com using the exact same email/password combo, it returns an incorrect password error, exactly as if I'd just entered the password wrong. (Friends, I guarantee I did not enter the password wrong. I had several different colleagues verify that both the username and password were identical to the ones I used to log in on mobile.)
This issue persists regardless of whether I use Firefox or Brave, Private/Incognito mode or regular, extensions enabled or not. I even tried deleting my PC's etc/hosts file in case that was causing a problem, but to no avail. The laptop and mobile are on the same wifi network. I tried doing "forgot password" on the laptop, but it gave me an error, saying to contact my org admin, so no luck there.
Does anyone know what's going on?