Hello, I look after our Citrix VDI environment. We have an older version of Firefox (49.0.2) currently running on our shared servers so need to update this. In test I have updated to the 64-bit version of Firefox Quantum 63.0.1 I am able to load pages and about:config when logged on to the server through VMware console session but as soon as I RDP to the server I get a blank page and websites wont load. Nothing happens when I go to about:config. This is happening when I am logged on via RDP with the same account as I use when logged on to the VMware console to the same server - which is a Domain admin account. I've turned off hardware acceleration, confirmed no DNS issue as I can browse in other browsers, no Windows Firewall turned on and No AV that could be blocking this So not sure what else to check. Is there a setting in about:config that I might need to change?

Thanks in advance!