hello, please note that at the moment we can only offer support in english in this forum. if you want to ask a question in german please do so in the forum of the german-speaking firefox community at http://www.camp-firefox.de/forum/viewforum.php?f=14 instead. thank you for your understanding!

Hi Aueninstitut

That looks like a problem with the disk cache (cache2).

"Clear the Cache":

• Firefox/Tools > Options > Advanced > Network > Cached Web Content: "Clear Now"
• Extras > Einstellungen > Erweitert > Netzwerk > Zwischengespeicherte Webinhalte: Jetzt leeren

If clearing the cache doesn't help then try to clear the disk cache manually. You can find the location of the cache on the about:cache page. You can open about: pages via the location/address bar.

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

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

If the new profile works then you can transfer files from a previously used profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over problems.

• http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

Hi,

thank you for the quick reply.

Unfortunately I didn't manage to clear the cache because I can't access it. The problem is that firefox doesn't start, so I can't open the options. Is there a way to clear the chache from within windows explorer or via some comand prompt?

The location of the cache is in a hidden folder in AppData\Local

• C:\Users\<user>\AppData\Local\Mozilla\Firefox\Profiles\<profile>\

Can you bring up the Profile Manager to try to create a new profile?

• https://support.mozilla.org/kb/Managing+profiles
• https://support.mozilla.org/kb/Recovering+important+data+from+an+old+profile