Fehlermeldungen in allen Browsern zu Webseiten - Firefox-Fehler "PR_END_OF_FILE ERROR"

Given that the issue occurs across multiple browsers and even affects areas of the same website, it's likely not a browser-specific problem. Additionally, the fact that even Bitdefender is affected suggests a deeper issue with either your system configuration or your network connection.

Here's a systematic troubleshooting approach you can follow:

1. Check your Internet Connection:

• Restart your router and modem: This can often resolve temporary network glitches
• Test other devices: See if other devices connected to your network experience similar problems. If they do, the issue is likely with your internet service provider (ISP). Contact them for support.

2. Verify DNS Settings:

• Open Command Prompt as administrator and type the following commands, pressing Enter after each:
  • ipconfig /flushdns
  • ipconfig /release
  • ipconfig /renew
• Change DNS servers: Temporarily switch to a public DNS server like Google DNS (8.8.8.8 and 8.8.4.4) or Cloudflare DNS (1.1.1.1 and 1.0.0.1) to see if that resolves the issue.

3. Check Firewall and Antivirus Settings:

• Temporarily disable your firewall and antivirus software: See if the websites load properly when these are off. If they do, you'll need to adjust the settings of your security software to allow access to the affected websites.

4. Reset Network Settings:

• Windows Settings: Go to Settings > Network & Internet > Advanced network settings> Network reset.

5. Check for Malware:

• Run a full system scan: Use Bitdefender antimalware to check for and remove any malicious software that could be causing the issue.

6. Update Network Drivers:

• Device Manager: Open Device Manager, expand Network adapters, right-click on each adapter, and select "Update driver".

7. Check for System File Corruption:

• Open Command Prompt as administrator and run the following commands one by one:
  • sfc /scannow
  • DISM /Online /Cleanup-Image /RestoreHealth

Additional Notes:

• VPN: If you're using a VPN, try disabling it to see if that's the cause of the problem.
• Proxy server: Check your browser settings and Windows settings to ensure you're not using a proxy server that could be interfering.

If the issue persists, kindly contact Bitdefender support by visiting https://www.bitdefender.com/consumer/support/help

Select, How to's & Troubleshooting Bitdefender products→Troubleshooting→I don't know→Contact Support→ You will get the option of chat, call or email.

Regards