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.

Avatar for Username

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

Le thread ibilondoloziwe. Nceda ubuze umbuzo omtsha ukuba ufuna uncedo.

Unable to connect Firefox can’t establish a connection to the server at pdf.wondershare.com.

  • 1 phendula
  • 1 inayo le ngxaki
  • 14 views
  • Impendulo yokugqibela ngu FredMcD

Arthur Bogdanove
Arthur Bogdanove
more options

How do I fix this? Hmmm Unable to connect

Firefox can’t establish a connection to the server at (various websites that I click the links to get to).

How do I fix this? Hmmm Unable to connect Firefox can’t establish a connection to the server at (various websites that I click the links to get to).

All Replies (1)

FredMcD
FredMcD
more options

There is security software like Avast, Kaspersky, BitDefender and ESET that intercept secure connection certificates and send their own.

https://support.mozilla.org/en-US/kb/firefox-cant-load-websites-other-browsers-can

https://support.mozilla.org/en-US/kb/firefox-and-other-browsers-cant-load-websites

https://support.mozilla.org/en-US/kb/secure-connection-failed-error-message

https://support.mozilla.org/en-US/kb/connection-untrusted-error-message

Websites don't load - troubleshoot and fix error messages

http://kb.mozillazine.org/Error_loading_websites

What do the security warning codes mean