Be sure to also check the actual squid.exe is running - not just the service wrapper, you might be facing the https://github.com/diladele/squid-windows/issues/101 bug (4.14 does not work on older processors) Best regards, Rafael -----Original Message----- From: squid-users <squid-users-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of Amos Jeffries Sent: Sunday, 24 October 2021 22:45 To: squid-users@xxxxxxxxxxxxxxxxxxxxx Subject: Re: Squid upgrade failure support questions On 25/10/21 6:33 am, Yuen, John wrote: > > http_port 3128 > > The 'Squid for Windows' service is set to 'Automatic' startup type and > shows the 'Running' status. So it can't be that. I can telnet to port > 3128 on the new working Squid v4.14 server. But I can't telnet to the > same port 3128 on the upgraded/non-working Squid server. When I do, it > doesn't work and errors out like this: > > C:\>telnet Squid-01 3128 > > Connecting To Squid-01...Could not open connection to the host, on > port > 3128: Connect failed > At no point in your post do I see any mention of what the IP addresses are. Can you please indicate what "localhost", "Squid-01" resolve to on both the machine used as client and the Squid machine. And what IP(s) those firewall rules by Local subnet "Any" and Remote address "local subnet". Amos _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users