My Firefox browser accessed the internet until a day ago. Now its unable to load pages. Computer’s network connection is good. I did a firewall check. I even excluded the browser from firewall checks to no avail. The only alternative remaining is resetting the browser. Any suggestions will be appreciated.
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Hi praado, how does Firefox describe the problem in the error page -- can you copy/paste the text of the message into a reply (here at https://support.mozilla.org/questions/1395670 - not by email).
For example, if Firefox says the site can't be found, that could be a problem with the DNS lookup. This article describes how to switch DNS services: Firefox DNS-over-HTTPS.
If Firefox says it couldn't make a secure connection, the page may list an error code similar to SEC_ERROR_SOMETHING (either in the main body or after clicking an Advanced button). This article describes the main codes: How to troubleshoot security error codes on secure websites.
If Firefox says the connection timed out, or gives some other explanation, that would be a useful clue. Or if you get a completely blank page, etc.