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PR_CONNECT_RESET_ERROR on Firefox


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Hi,

Suddenly my Firefox is giving a Secure Connection Failed error.

Upon some googling from Chrome, I found that some settings/certificate issues in Kaspersky may cause this. So, I tried exiting Kaspersky Internet Security and Firefox works as usual.

I am using:

  • Windows 11 Version 22H2 (OS Build 22621.2070)
  • Firefox 116.0.1
  • Kaspersky Internet Security 21.3.10.391 (K)

How can I fix the issue?

Thanks

 

 

Screenshot 2023-08-07 122216.png

1.png

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Hello @Abhik B

As well as the above post.

Try this script.

The "PR_CONNECT_RESET_ERROR" in Firefox typically indicates that the browser was unable to establish a secure connection to the website you were trying to visit. This can be caused by various factors, including issues with your internet connection, browser settings, or security software like Kaspersky Internet Security.

Since you mentioned that the error occurs when using Kaspersky Internet Security, here are a few steps you can try to resolve the issue:

1. **Disable HTTPS Scanning**: Kaspersky Internet Security often includes a feature called "HTTPS scanning" or "SSL/TLS protocol filtering" that intercepts and scans encrypted connections. Sometimes, this feature can conflict with the browser's secure connections. Try disabling this feature in Kaspersky's settings and then restart your browser to see if the issue is resolved.

2. **Clear SSL State**: Sometimes, cached SSL certificates can cause connection issues. You can try clearing the SSL state in Firefox by following these steps:
   - Open Firefox.
   - Go to the menu (three horizontal lines in the upper-right corner) and select "Options."
   - In the left sidebar, click on "Privacy & Security."
   - Scroll down to the "Certificates" section and click on "Clear Site Data..."
   - Check the box next to "Active Logins" and "Cache" and click "Clear."

3. **Check Proxy Settings**: Make sure that your browser is not configured to use a proxy server that might interfere with the connection. In Firefox, you can check this by going to "Options" > "General" > "Network Settings."

4. **Update Kaspersky and Firefox**: Ensure that both Kaspersky Internet Security and Firefox are up to date. Outdated software can sometimes lead to compatibility issues.

5. **Try Another Browser**: If the issue persists, try accessing the website in a different browser (e.g., Chrome, Edge) to see if the problem is specific to Firefox.

6. **Temporary Disable Kaspersky**: As a test, you can temporarily disable Kaspersky Internet Security and see if the issue goes away. If it does, then it's likely that some setting or feature in Kaspersky is causing the problem.

7. **Contact Support**: If none of the above steps resolve the issue, you may want to reach out to Kaspersky's support or Firefox support for further assistance. They might have specific recommendations based on your setup.

Remember that adjusting security settings can have implications for your computer's safety, so make sure you're aware of the potential risks and only make changes if you are comfortable doing so.

Thank you

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