Can you try to start Firefox in Safe Mode to see if Firefox works properly with no error? You can start Firefox in Safe Mode below:

• Windows/Mac: Go to Help > Restart with add-ons disabled
• Linux: Run firefox -safe-mode in the Terminal/Konsole

If Firefox opens up fine with no problems, it's probably one of your extensions that's causing the issue. You can re-enable your add-ons one by one until you find the one that causes the issue upon being re-enabled.

Thanks for the fast replay, but it did not help. One more thing that might be related: I can not use the replay. The page is reloading but the replay-box is not there. (I'm using another pc now)

Can you start by giving us the troubleshooting information from the Firefox installation that's having problems. This is an essential step in troubleshooting.

• Click the Firefox button at the top left, then click the Help menu and select Troubleshooting Information from the sub-menu. If you don't have a Firefox button, click the Help menu at the top and select Troubleshooting Information from the menu.

Now, a new tab containing your troubleshooting information should open.

• At the top of the page, you should see a button that says "Copy text to clipboard". Click it.
• Now, go back to your forum post and click inside the reply box. Press Ctrl+V to paste all the information you copied into the forum post.

Programinfo

Navn: Firefox Versjon: 28.0 Brukeragent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0

Krasjrapporter de siste 3 dagene

Alle krasjrapporter

Utvidelser

Viktige endrede innstillinger

browser.cache.disk.capacity: 358400 browser.cache.disk.smart_size.first_run: false browser.cache.disk.smart_size.use_old_max: false browser.cache.disk.smart_size_cached_value: 358400 browser.places.smartBookmarksVersion: 6 browser.sessionstore.upgradeBackup.latestBuildID: 20140314220517 browser.startup.homepage_override.buildID: 20140314220517 browser.startup.homepage_override.mstone: 28.0 dom.mozApps.used: true extensions.lastAppVersion: 28.0 gfx.direct3d.last_used_feature_level_idx: 0 network.cookie.prefsMigrated: true places.database.lastMaintenance: 1399403270 places.history.expiration.transient_current_max_pages: 104858 plugin.disable_full_page_plugin_for_types: application/pdf plugin.importedState: true privacy.sanitize.migrateFx3Prefs: true storage.vacuum.last.index: 0 storage.vacuum.last.places.sqlite: 1399403270

Grafikk

Adapter-beskrivelse: Intel(R) HD Graphics 4000 Adapter-drivere: igdumd64 igd10umd64 igd10umd64 igdumd32 igd10umd32 igd10umd32 Bruk DirectWrite: false (6.2.9200.16581) Driverdato: 8-21-2012 Driverversjon: 9.17.10.2843 Enhet-ID: 0x0166 GPU #2 aktiv: false GPU-akselererte vinduer: 0/1 Basic Leverandør-ID: 0x8086 RAM: Unknown WebGL-renderer: Google Inc. -- ANGLE (Intel(R) HD Graphics 4000 Direct3D9Ex vs_3_0 ps_3_0) windowLayerManagerRemote: false AzureCanvasBackend: skia AzureContentBackend: cairo AzureFallbackCanvasBackend: cairo AzureSkiaAccelerated: 0

JavaScript

Inkrementell GC: true

Tilgjengelighet

Aktivert: false Forhindre tilgjengelighet: 0

Bibliotekversjoner

NSPR Forventet minimumsversjon: 4.10.3 Versjon i bruk: 4.10.3

NSS Forventet minimumsversjon: 3.15.5 Basic ECC Versjon i bruk: 3.15.5 Basic ECC

NSSSMIME Forventet minimumsversjon: 3.15.5 Basic ECC Versjon i bruk: 3.15.5 Basic ECC

NSSSSL Forventet minimumsversjon: 3.15.5 Basic ECC Versjon i bruk: 3.15.5 Basic ECC

NSSUTIL Forventet minimumsversjon: 3.15.5 Versjon i bruk: 3.15.5

Uppdater: When I write https:// first it kind of works: I get to go to the page but without layout. Does that tell you anything?

Uppdater: When I write https:// first it kind of works: I get to go to the page but without layout. Does that tell you anything?

The first thing that tells me is to clear cache/cookies but that probaly won't work.

Create a new profile as a test to check if your current profile is causing the problems.

See "Creating a profile":

• https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles
• http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues

Deleted the old, created a new. Same problem

It is possible that your security software (firewall, anti-virus) 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 and the plugin-container 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 and the updater process.

See:

• https://support.mozilla.org/kb/Server+not+found
• https://support.mozilla.org/kb/Firewalls

• https://support.mozilla.org/kb/fix-problems-connecting-websites-after-updating

Now when I try to open a page with https:// I get errorcode: ssl_error_cert_domain EDIT: posted this before reading youre replay...trying your sugestion now

Possibly related and failed to mention that you had a rather suspicious plugin called "PriceMeterLiveUpdate Update". I did a quick google search and found out that it's adware/malware.

Do a malware check with some malware scanning programs on the Windows computer.
Please scan with all programs because each program detects different malware.
All these programs have free versions.

Make sure that you update each program to get the latest version of their databases before doing a scan.

• Malwarebytes' Anti-Malware:
  http://www.malwarebytes.org/mbam.php
• AdwCleaner:
  http://www.bleepingcomputer.com/download/adwcleaner/
  http://www.softpedia.com/get/Antivirus/Removal-Tools/AdwCleaner.shtml
• SuperAntispyware:
  http://www.superantispyware.com/
• Microsoft Safety Scanner:
  http://www.microsoft.com/security/scanner/en-us/default.aspx
• Windows Defender: Home Page:
  http://www.microsoft.com/windows/products/winfamily/defender/default.mspx
• Spybot Search & Destroy:
  http://www.safer-networking.org/en/index.html
• Kasperky Free Security Scan:
  http://www.kaspersky.com/security-scan

You can also do a check for a rootkit infection with TDSSKiller.

• Anti-rootkit utility TDSSKiller:
  http://support.kaspersky.com/5350?el=88446

See also:

• "Spyware on Windows": http://kb.mozillazine.org/Popups_not_blocked

You should also remove this from Firefox by going to about:addons from the address bar, click Plugins, and set the PriceMeterLiveUpdate to Never_Activate.

One last thing is you should remove anything suspicious or software you haven't installed yourself from the computer. (Start > Control Panel)

Problem solved: Firefox asked me to make an expetion for this page. I did and it now works. I clicked around a few pages and now everything works :) thanks a lot for your help!

Thank you for detecting that! I will do it now.

I am glad to hear that your problem has been resolved.

If you have not already, please mark this thread as solved by marking the solution.
This will help other users experiencing similar problems find help faster and more efficiently.