Windows 10: keep getting insecure websites message with latest Mozilla Firefox

I have just installed latest version of Mozilla Firefox to try ( i use Cyberfox as main browser )

when i search something i keep getting this message on all sites i visit ie BBC,Amazon,etc
How to get Mozilla Firefox to work..?

Thank you





:)

 

Insecure encryption protocol/connection

The error messages are;

This website uses an insecure connection.

This website uses an insecure encryption protocol, and your connection may not be private.

This problem might indicate an attempt to intercept any data you send to the server.

Click here to close this webpage.

More ifnromation

Have done the IE-tools-compatibility view setting several times and did it again and again the error message;

Content was blocked because it used an insecure encryption protocol.

For more information see 'Insecure connection' in IE help.

And had een trying to see but also keeps getting 'This page can't be displayed....

 

Error message: "can't connect" and can't connect to any website. Windows 10

I've had a lot of trouble. Right now the trouble is when viewing websites and then re-visiting a website I get the message can' connect and thereafter I can' connect to any other website. Using mozilla firefox. Thanks

Old title: Windows 10.

 

First try uninstalling and reinstalling FireFox and then check sites. Does this happen with any other browser you use?

 

Thank you for reply.

Will let you know what happens.

 

Plankton,

Uninstalled Firefox and re-installed...still get websites insecure message. Have checked my Internet security firewall settings..everything ok there.

I use Cyberfox as main browser using Google search engine ...works fine..Microsoft Edge works fine...

Have no idea why Mozilla Firefox not working

 

Sorted problem out...the culprit was a installed program i was using ..totally removed it..cleaned pc of junk files.
Mozilla Firefox works now