Error message
Take a screenshot or copy the exact wording. The boring text is often the clue.
A few quick checks for support calls: public IP, device details, browser info, and links I usually ask people to find anyway.
Checking from this browser...
This gives me the basics without you spelunking through menus.
These are the details that usually save the most time when something is acting up.
Take a screenshot or copy the exact wording. The boring text is often the clue.
Tell me whether it began today, after an update, after a reboot, or after installing something.
New network, new password, new device, new app, moved cables, or anything that feels related.