We have recently updated our DCs from Windows Server 2016 to Windows Server 2019 and all our legacy systems (Windows XP + Windows 2000) are no longer able to login and retrieve group policies. It's been suggested in quite a few forums, in particular https://social.technet.microsoft.com/Forums/ie/en-US/7420a288-7111-458a-bf32-efad80d5e5e5/server-2019-dc-kerberos-rc4-authentication?forum=ws2019 that the issue is due to Windows Server 2019 lacking RC4 support for Kerberos authentication. It hasn't been listed on any official documentation that WS 2019 doesn't support it, yet I've tried all the methods outlined in the forum I linked above but to no avail.
Any assistance would be greatly appreciated.
(And yes I know RC4 is more insecure and that we should upgrade our legacy systems, this is in the pipeline but we need a solution in the mean time)
