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I cannot load any web pages (500 Internal Server Error)

Posted

I cannot currently load any web pages when using Firefox. I get a standard "500 Internal Server Error" page on every site. I have tested using IE and there are no problems loading pages.

I have tried creating a new profile, uninstalling and reinstalling, upgrading to Firefox 4 (was previously using 3) and uninstalling and wiping all profile information, but nothing has worked.

The problem started when a video player made in Flash crashed (channel4.com). Windows was completely unresponsive and I could not exit full screen mode of the video. I tried pressing esc, ctrl + esc, ctrl + alt + delete etc but nothing worked and I had to hold the power button on the tower for 4 seconds to turn it off. When I started up again I was presented with the screen when Windows fails to load normally and I selected the "Start Windows normally", which booted up Windows successfully. Since then I have been unabe to view any web pages in Fireox, I always get the 500 Internal Server Error page.

This is an odd one and I am out of ideas, any help would be much appreciated as I really want to get back to using Firefox!

Thanks

I cannot currently load any web pages when using Firefox. I get a standard "500 Internal Server Error" page on every site. I have tested using IE and there are no problems loading pages. I have tried creating a new profile, uninstalling and reinstalling, upgrading to Firefox 4 (was previously using 3) and uninstalling and wiping all profile information, but nothing has worked. The problem started when a video player made in Flash crashed (channel4.com). Windows was completely unresponsive and I could not exit full screen mode of the video. I tried pressing esc, ctrl + esc, ctrl + alt + delete etc but nothing worked and I had to hold the power button on the tower for 4 seconds to turn it off. When I started up again I was presented with the screen when Windows fails to load normally and I selected the "Start Windows normally", which booted up Windows successfully. Since then I have been unabe to view any web pages in Fireox, I always get the 500 Internal Server Error page. This is an odd one and I am out of ideas, any help would be much appreciated as I really want to get back to using Firefox! Thanks

Chosen solution

Which security software (firewall) do you have?


A possible cause is security software (firewall) that blocks or restricts Firefox or the plugin-container process without informing you, possibly after detecting changes (update) to the Firefox program.

Remove all rules for Firefox from the permissions list in the firewall and let your firewall ask again for permission to get full unrestricted access to internet for Firefox and the plugin-container process.

See:

Read this answer in context 0

Additional System Details

Sites Affected

http://

Installed Plug-ins

Adobe Acrobat 9.1.0.163

Java Deployment Toolkil 6.0.200.2

Shockwave Flash 10.3.181.14

Silverlight Plug-In 5.0.50.310.0

Winamp Application Detector 5.5.7.2830

Windows Live Photo Galery 14.0.8081.709

WPI Detector 1.1 1.1.0.1

Application

  • User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; MDDC; .NET4.0C; .NET4.0E)

More Information

Application Basics
Name
Firefox
Version
4.0.1
User Agent
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0.1) Gecko/20100101 Firefox/4.0.1
Profile Directory
Open Containing Folder
Enabled Plugins
about:plugins
Build Configuration
about:buildconfig
Extensions
Name
Version
Enabled
ID
XULRunner
1.9.1
false
{FFA29569-D561-46D2-B7F0-C044E70FE013}
Java Console
6.0.20
true
{CAFEEFAC-0016-0000-0020-ABCDEFFEDCBA}
RelevantKnowledge
1.3.329.2
true
{6E19037A-12E3-4295-8915-ED48BC341614}
Firefox Synchronisation Extension
7.3.4.74
false
{A27F3FEF-1113-4cfb-A032-8E12D7D8EE70}
Modified Preferences
Name
Value
browser.places.smartBookmarksVersion
2
browser.startup.homepage_override.buildID
20110413222027
browser.startup.homepage_override.mstone
rv:2.0.1
extensions.lastAppVersion
4.0.1
network.cookie.prefsMigrated
true
places.history.expiration.transient_current_max_pages
256410
privacy.sanitize.migrateFx3Prefs
true
Graphics
Adapter Description
ATI Radeon HD 5700 Series
Vendor ID
1002
Device ID
68b8
Adapter RAM
1024
Adapter Drivers
atiumd64 atidxx64 atidxx64 atiumdag atidxx32 atidxx32 atiumdva atiumd6a atitmm64
Driver Version
8.660.0.0
Driver Date
9-18-2009
Direct2D Enabled
Blocked on your graphics driver. Try updating your graphics driver to version 10.6 or newer.
DirectWrite Enabled
false (6.1.7600.16385, font cache n/a)
WebGL Renderer
(WebGL unavailable)
GPU Accelerated Windows
0/1

cor-el
  • Top 10 Contributor
  • Moderator
16392 solutions 147900 answers

Chosen Solution

Which security software (firewall) do you have?


A possible cause is security software (firewall) that blocks or restricts Firefox or the plugin-container process without informing you, possibly after detecting changes (update) to the Firefox program.

Remove all rules for Firefox from the permissions list in the firewall and let your firewall ask again for permission to get full unrestricted access to internet for Firefox and the plugin-container process.

See:

Which security software (firewall) do you have? ---- A possible cause is security software (firewall) that blocks or restricts Firefox or the plugin-container process without informing you, possibly after detecting changes (update) to the Firefox program. Remove all rules for Firefox from the permissions list in the firewall and let your firewall ask again for permission to get full unrestricted access to internet for Firefox and the plugin-container process. See: * https://support.mozilla.com/kb/Server+not+found * https://support.mozilla.com/kb/Firewalls

Question owner

Thank you very much cor-el, your suggestions worked and I am back to using Firefox :)

Thank you very much cor-el, your suggestions worked and I am back to using Firefox :)
cor-el
  • Top 10 Contributor
  • Moderator
16392 solutions 147900 answers

You're welcome

You're welcome