Mozilla Firefox Server Error

Forum, after using my Mozilla Firefox very successfully today for a while. I went off line for a couple of hours and left my pc. When I returned I saw a message from Adobe that they wanted me to download their latest Flash Player. I said OK. While they were downloading that and my Norton was telling me it was safe, they were also simultaneously downloading the McAffee Security Scan Plus, which was automatic. I couldn't stop it. I then removed the McAfee Security Scan Plus (I already have Norton, Malwarebytes, and Superantispyware). I found that I could still get on line through Internet Explorer and Google Chrome, but unable to get on to the MSN site through Mozilla Firefox, which is my "main" browser-although I'm not sure I made Firefox my default browser.

Whenever I click on the Mozilla Firefox icon through my Desktop page to access the net, I get the following error message in bold colors:

Server Error

403--Forbidden: Access is Denied. You do not have permission to view this directory or page using the credentials that you supplied.

What gives? Again, so far I can access IE and Chrome but NOT Firefox. I will say that I was unable to access IE either for a while. I kept say that "http:///" is not a valid e-mail address (for IE). Somehow, I managed to fix that problem. Again, Chrome is working OK. But Firefox has remained inaccessible.

Any advice appreciated. Steve






Tech Support Guy System Info Utility version 1.0.0.2
OS Version: Microsoft Windows 8.1, 64 bit
Processor: Intel(R) Core(TM) i5-4440 CPU @ 3.10GHz, Intel64 Family 6 Model 60 Stepping 3
Processor Count: 4
RAM: 8131 Mb
Graphics Card: NVIDIA GeForce GT 640, -1 Mb
Hard Drives: C: Total - 153599 MB, Free - 108795 MB; D: Total - 783171 MB, Free - 782975 MB;
Motherboard: ASUSTeK COMPUTER INC., M70AD
Antivirus: Windows Defender, Disabled

 

Hi,

Try clearing the cache..

Clear the cache and the cookies from sites that cause problems.

Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"
"Remove Cookies" from sites causing problems:

Tools > Options > Privacy > Cookies: "Show Cookies"

Hope this solves.. !!!

 

Thank You.

Ummm.....Where do find the sequence of Tools>Options>Advanced>Network>Offline Storage (Cache) and Tools>Options>Privacy>Cookies in Windows 8.1? I need to know for the future.

I say, "future," because, at least for now, the problem has been corrected. Don't know if there was some maintenance going on with the server or some other problem, but things seem to be OK for Mozilla Firefox.

 

The version of Windows makes no difference. Firefox is the same in 8.1 as it is in 7.