Why is Chrome asking me to choose a certificate for Google content?

If this started suddenly for multiple people, a change or temporary issue on the service side is plausible, but the reports alone don’t confirm that. Check Google’s service status information and see whether the prompt stops appearing before making broad changes to devices.

A certificate prompt means the connection is asking the browser to identify itself with a certificate. If you don’t recognize the choices, don’t select one just to get past the prompt. On a managed device, ask your IT team to check whether those certificates are expected and whether there’s a known incident.

Don’t assume it’s only a work-device or management-policy problem. Reports mentioned both managed and personal devices, though that doesn’t prove every device is affected. If it keeps happening, note which Google content triggers it and whether it happens in another browser or on another network. That can help narrow down where to investigate.