Start Firefox in Safe Mode {web Link} by holding down the <Shift>
(Mac Options) key, and then starting Firefox. Is the problem still there?

Type about:support in the address bar and press Enter. Under the main banner, press the button; Copy Text To Clipboard.. Then in the reply box at the bottom of this page, do a right click in the box and select Paste. This will show us your system details. No Personal Information Is Collected.

Starting Firefox in Safe mode has allready been tried. The problem is still there.

Unfortunately the copied text is partially in German. I cannot change this, since I cannot access the options.

Allgemeine Informationen

Name: Firefox Version: 40.0.3 Build-ID: 20150826023504 Update-Kanal: release User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:40.0) Gecko/20100101 Firefox/40.0 Fenster mit mehreren Prozessen: 0/2 (Standard: false)

Absturzberichte der letzten 3 Tage

Alle Absturzberichte

Erweiterungen

Name: Adblock Plus Version: 2.6.10 Aktiviert: true ID: {d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d}

Name: Dragon NaturallySpeaking Rich Internet Application Support Version: 1.0.0.6 Aktiviert: false ID: jid0-lmZNVK7a82O8cufhdfB9dUDfA2w@jetpack

Grafik

Asynchrones Wischen und Zoomen: nichts Direct2D aktiviert: true DirectWrite aktiviert: true (6.2.9200.17461) Geräte-ID: 0x0166 Geräte-ID (GPU #2): 0x0fd3 GPU #2 aktiv: false GPU-beschleunigte Fenster: 2/2 Direct3D 11 (OMTC) H264-Hardware-Dekodierung unterstützt: true Karten-Beschreibung: Intel(R) HD Graphics 4000 Karten-Beschreibung (GPU #2): NVIDIA GeForce GT 640M LE Karten-RAM: Unknown Karten-RAM (GPU #2): 2048 Karten-Treiber: igdumd64 igd10umd64 igd10umd64 igdumd32 igd10umd32 igd10umd32 Karten-Treiber (GPU #2): nvd3dumx,nvwgf2umx,nvwgf2umx nvd3dum,nvwgf2um,nvwgf2um Subsys-ID: 16c210cf Subsys-ID (GPU #2): 176610cf Treiber-Datum: 9-26-2012 Treiber-Datum (GPU #2): 7-22-2015 Treiber-Version: 9.17.10.2867 Treiber-Version (GPU #2): 10.18.13.5362 Vendor-ID: 0x8086 Vendor-ID (GPU #2): 0x10de WebGL-Renderer: Google Inc. -- ANGLE (Intel(R) HD Graphics 4000 Direct3D11 vs_5_0 ps_5_0) windowLayerManagerRemote: true AzureCanvasBackend: direct2d 1.1 AzureContentBackend: direct2d 1.1 AzureFallbackCanvasBackend: cairo AzureSkiaAccelerated: 0

Wichtige modifizierte Einstellungen

accessibility.typeaheadfind.flashBar: 0 browser.cache.disk.capacity: 358400 browser.cache.disk.filesystem_reported: 1 browser.cache.disk.smart_size.first_run: false browser.cache.frecency_experiment: 3 browser.download.importedFromSqlite: true browser.places.smartBookmarksVersion: 7 browser.sessionstore.upgradeBackup.latestBuildID: 20150826023504 browser.startup.homepage: https://www.google.at browser.startup.homepage_override.buildID: 20150826023504 browser.startup.homepage_override.mstone: 40.0.3 browser.tabs.closeWindowWithLastTab: false browser.tabs.warnOnClose: false dom.apps.reset-permissions: true dom.mozApps.used: true extensions.lastAppVersion: 40.0.3 gfx.direct3d.last_used_feature_level_idx: 0 media.gmp-eme-adobe.enabled: false media.gmp-eme-adobe.lastUpdate: 1442602193 media.gmp-eme-adobe.version: 13 media.gmp-gmpopenh264.autoupdate: false media.gmp-gmpopenh264.enabled: false media.gmp-gmpopenh264.lastUpdate: 1442602192 media.gmp-gmpopenh264.version: 1.4 media.gmp-manager.buildID: 20150826023504 media.gmp-manager.lastCheck: 1442708784 network.auth.allow-subresource-auth: 2 network.cookie.prefsMigrated: true network.predictor.cleaned-up: true places.database.lastMaintenance: 1442671529 places.history.expiration.transient_current_max_pages: 76984 plugin.disable_full_page_plugin_for_types: application/pdf plugin.importedState: true plugin.state.flash: 1 plugin.state.npdgnria: 0 privacy.cpd.sessions: false privacy.sanitize.migrateFx3Prefs: true storage.vacuum.last.index: 0 storage.vacuum.last.places.sqlite: 1442671529

Wichtige nicht veränderbare Einstellungen

JavaScript

Inkrementelle GC: true

Barrierefreiheit

Aktiviert: false Barrierefreiheit verhindern: 0

Bibliotheken-Versionen

NSPR Minimal vorausgesetzte Version: 4.10.8 Verwendete Version: 4.10.8

NSS Minimal vorausgesetzte Version: 3.19.2 Basic ECC Verwendete Version: 3.19.2 Basic ECC

NSSSMIME Minimal vorausgesetzte Version: 3.19.2 Basic ECC Verwendete Version: 3.19.2 Basic ECC

NSSSSL Minimal vorausgesetzte Version: 3.19.2 Basic ECC Verwendete Version: 3.19.2 Basic ECC

NSSUTIL Minimal vorausgesetzte Version: 3.19.2 Verwendete Version: 3.19.2

Experimentelle Funktionen

The report looks okay.

Download Firefox Full Version For All languages And Systems {web link} Save the file. Then;

Using your file browser, open the Programs Folder on your computer.

Windows: C:\Program Files C:\Program Files (x86) Mac: Open the "Applications" folder. Linux: Check your user manual.

• Linux: If you installed Firefox with the distro-based package manager, you should use the same way to uninstall it - see Install Firefox on Linux. If you downloaded and installed the binary package from the Firefox download page, simply remove the folder Firefox in your home directory.

Look for, and rename any Mozilla or Firefox folders by adding .old to them.

After rebooting the computer, run a registry scanner. Then run the installer. If all goes well, remove the OLD folders when you are done.

Unfortunately this was not the solution.

I renamed the Mozilla Firefox folder, rebootet, ran a registry scan (with Ccleaner), yet after running the Firefox Full installer the problem still persists.

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

Boot the computer in Windows Safe Mode with network support (press F8 on the boot screen) to see if that helps.

• http://www.bleepingcomputer.com/tutorials/how-to-start-windows-in-safe-mode/
• http://www.7tutorials.com/4-ways-boot-safe-mode-windows-10

Do a malware check with several malware scanning programs on the Windows computer.

• https://support.mozilla.org/kb/troubleshoot-firefox-issues-caused-malware

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:
  http://windows.microsoft.com/en-us/windows/using-defender
• 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