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hello from france, excuse my english ... I use firefox 91.0.é with a macbook pro 16 / big sur . Untill now firefox was working OK since months,... and this morning no possible to connect ... try several adress , same problem, With other ( safari, chrome) it works, the stop fire is disabled , little snitck disabled ... the strange is that if I connect via VPN (NordVPN) it works, if i stop VPN not possible to connect anywhere. ( msg adress unknow ...) This situation appears since this mornink without I change anything since yesterday ? have ideas ? I need to work sometimes without VPN because some site don't accept foreign connection Thank's for help

hello from france, excuse my english ... I use firefox 91.0.é with a macbook pro 16 / big sur . Untill now firefox was working OK since months,... and this morning no possible to connect ... try several adress , same problem, With other ( safari, chrome) it works, the stop fire is disabled , little snitck disabled ... the strange is that if I connect via VPN (NordVPN) it works, if i stop VPN not possible to connect anywhere. ( msg adress unknow ...) This situation appears since this mornink without I change anything since yesterday ? have ideas ? I need to work sometimes without VPN because some site don't accept foreign connection Thank's for help

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Some VPNs can be set to different locations. Check with their support.


Please explain the problem in detail. What happens? What is/are the exact error message(s) ?

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You can check the connection settings.

  • Settings -> General -> Network: Connection -> Settings

If you do not need to use a proxy to connect to internet then try to select "No Proxy" if "Use the system proxy settings" or one of the others do not work properly.

See "Firefox connection settings":