when accessing gmail through firefox, this message appears: bad request 400. what does this mean?
I use Firefox as my primary server for my Gmail account. Today, when attempting to access my email, I received error messages that the email message could not be opened, and to try again. When I tried again, I got a message that Firefox was working offline, so I needed to uncheck the offline box. The offline box was indeed checked (but I did not check it), so I unchecked it, and the same message occurred. I still cannot get into my gmail through Firefox.
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- "Clear the Cache": Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"
- "Remove the Cookies" from sites that cause problems: Tools > Options > Privacy > Cookies: "Show Cookies"
Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of your add-ons is causing your problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).
- Don't make any changes on the Safe mode start window.
See Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems and [[Troubleshooting plugins]