We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Get error message after updating to Windows 10: Secure Connection Failed Peer's certificate has an invalid signature.

  • 2 replies
  • 58 have this problem
  • 1 view
  • Last reply by lmenzel

more options

Get error message trying to connect to Facebook after updating to Windows 10: Secure Connection Failed

An error occurred during a connection to www.facebook.com. Peer's certificate has an invalid signature. (Error code: sec_error_bad_signature)

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem.
Get error message trying to connect to Facebook after updating to Windows 10: Secure Connection Failed An error occurred during a connection to www.facebook.com. Peer's certificate has an invalid signature. (Error code: sec_error_bad_signature) The page you are trying to view cannot be shown because the authenticity of the received data could not be verified. Please contact the website owners to inform them of this problem.

Chosen solution

hey, if you are an avast user, please disable https scanning within the software:

  1. Open the Avast dashboard on the affected system.
  2. Select Settings from the left sidebar menu.
  3. Switch to Active Protection.
  4. Click on Customize next to Web Shield.
  5. Uncheck the "Enable HTTPS Scanning" option and click ok.

http://www.ghacks.net/2014/10/31/avasts-https-scanning-interferes-with-firefox-and-other-programs/

Read this answer in context 👍 62

All Replies (2)

more options

Chosen Solution

hey, if you are an avast user, please disable https scanning within the software:

  1. Open the Avast dashboard on the affected system.
  2. Select Settings from the left sidebar menu.
  3. Switch to Active Protection.
  4. Click on Customize next to Web Shield.
  5. Uncheck the "Enable HTTPS Scanning" option and click ok.

http://www.ghacks.net/2014/10/31/avasts-https-scanning-interferes-with-firefox-and-other-programs/

more options

Thanks.

Modified by lmenzel