see Firefox cannot load websites but other browsers can to solve that easily.

thank you

See also:

• http://kb.mozillazine.org/Error_loading_websites

You can try to reset (power off/on) the router.

The 2 web sites in question give " server not found" with both firefox and internet explorer. I cycled power to the modem and tried disabling DNS prefitching. Did not help. Others have no problem accessing these web sites. In the past I also had no problems. The problem started in the last 2 or 3 months that I have not been able to access them. I feel I have something set wrong in my computer but I don't have a clue as to what. I h previously tried dumping all cookies, history and temp files with no help.

Did you try other suggestions listed in the article like another DNS server or flush the DNS cache (ipconfig /flushdns)?

no I will go back and try those

I flushed the cache and tried open DNS. These did not work. HOWEVER for the first time I saw that neither of these web sites supply identity information and that the connection is not encrypted. I never ran into this problem before and I always connected with them before. Somewhere I have set something wrong. Help

Actually most of the sites I connect to just fine do not provide Identity info and do not encript

You can only get identity information if there is a secure (HTTPS) connection like this forum uses.
With a normal HTTP connection that info is not available.

See:

• https://support.mozilla.org/kb/Site+Identity+Button

Open DNS does correct the problem. A couple of days ago when I thought it didn't I somehow hadn't completed installation correctly.