No troubleshooting will help, you can check your logs here:
C:\ProgramData\Battle.net\Agent\Agent.xxxx\Logs
as stated before, update servers are not reachable.
[I 2022-11-16 19:48:48.0547] - Cleanup [E 2022-11-16 19:48:54.0231] - HTTP: connection failed for host 137.221.64.1:80: NET_ERR_CONNECTION_TIMED_OUT [E 2022-11-16 19:49:15.0236] - HTTP: connection failed for host 137.221.64.7:80: NET_ERR_CONNECTION_TIMED_OUT [E 2022-11-16 19:49:15.0236] - HTTP: connection failed for host 137.221.64.5:80: NET_ERR_CONNECTION_TIMED_OUT [E 2022-11-16 19:49:36.0242] - HTTP: connection failed for host 137.221.64.1:80: NET_ERR_CONNECTION_TIMED_OUT [E 2022-11-16 19:49:51.0265] - HTTP: connection failed for host 137.221.64.5:80: NET_ERR_CONNECTION_TIMED_OUT [E 2022-11-16 19:50:12.0268] - HTTP: connection failed for host 137.221.64.4:80: NET_ERR_CONNECTION_TIMED_OUT [E 2022-11-16 19:50:12.0268] - HTTP: connection failed for host 137.221.64.7:80: NET_ERR_CONNECTION_TIMED_OUT [E 2022-11-16 19:50:33.0281] - HTTP: connection failed for host 137.221.64.1:80: NET_ERR_CONNECTION_TIMED_OUT [E 2022-11-16 19:50:33.0357] - HTTP: connection failed for host 137.221.64.5:80: NET_ERR_CONNECTION_TIMED_OUT [E 2022-11-16 19:50:54.0369] - HTTP: connection failed for host 137.221.64.4:80: NET_ERR_CONNECTION_TIMED_OUT [E 2022-11-16 19:51:00.0299] - HTTP: connection failed for host 137.221.64.5:80: NET_ERR_CONNECTION_TIMED_OUT [E 2022-11-16 19:51:21.0301] - HTTP: connection failed for host 137.221.64.7:80: NET_ERR_CONNECTION_TIMED_OUT [I 2022-11-16 19:51:38.0343] - adding network address 8.241.53.254:80 for server http://level3.blizzard.com/ [I 2022-11-16 19:51:38.0343] - adding network address 67.26.115.254:80 for server http://level3.blizzard.com/ [I 2022-11-16 19:51:38.0343] - adding network address 8.238.150.254:80 for server http://level3.blizzard.com/ [E 2022-11-16 19:51:42.0307] - HTTP: connection failed for host 137.221.64.1:80: NET_ERR_CONNECTION_TIMED_OUT [E 2022-11-16 19:52:03.0308] - HTTP: connection failed for host 137.221.64.4:80: NET_ERR_CONNECTION_TIMED_OUT [E 2022-11-16 19:52:24.0323] - HTTP: connection failed for host 137.221.64.7:80: NET_ERR_CONNECTION_TIMED_OUT [E 2022-11-16 19:52:45.0337] - HTTP: connection failed for host 137.221.64.5:80: NET_ERR_CONNECTION_TIMED_OUT [E 2022-11-16 19:53:26.0388] - HTTP: connection failed for host 137.221.64.1:80: NET_ERR_CONNECTION_TIMED_OUT [E 2022-11-16 19:53:47.0393] - HTTP: connection failed for host 137.221.64.4:80: NET_ERR_CONNECTION_TIMED_OUT [E 2022-11-16 19:54:08.0405] - HTTP: connection failed for host 137.221.64.7:80: NET_ERR_CONNECTION_TIMED_OUT [E 2022-11-16 19:54:29.0423] - HTTP: connection failed for host 137.221.64.7:80: NET_ERR_CONNECTION_TIMED_OUT [E 2022-11-16 19:54:50.0810] - HTTP: connection failed for host 137.221.64.7:80: NET_ERR_CONNECTION_TIMED_OUT