I have a problem with Firefox 97.0 where I cannot access a networking switches web interface. The network is setup with a wireless router connected to two switches - switch_1 and switch_2. I am connected to the router via wifi and can ping both switches and get a response from both. If I try to access web interface at switch_1 I am ok but when I try to access web interface of switch_2, I get a 'The connection has timed out' error. There are no plug-ins or extensions in Firefox and the web interface is located on a local IP address 192.168.1.12 for switch_1 and 192.168.1.13 for switch_2. Both switches are the same make, model and have the same latest firmware installed. I have tried accessing the web interface of both switches from Internet Explorer too and I can access both. I have also tried another computer and can access web interfaces on both switches from Firefox and Internet Explorer, so now points to a Firefox issue on a specific computer. Both computers anti-virus and firewall are configured the same and have even been disabled but I get the same behaviour from both switches using both browsers on both computers - so, protection does not appear to be a factor. So, the problem lies with Firefox refusing to connect to one web interface on a specific computer. I'm not aware of any settings which would prevent this. Does anyone have any ideas.