I have used Let's Encrypt for years and the last time I renewed my certificates was 8 May 2025.
Now when I run wacs.exe, I get this:
A simple Windows ACMEv2 client (WACS)
Software version 2.2.9.1701 (release, trimmed, standalone, 64-bit)
Connecting to https://acme-v02.api.letsencrypt.org/...
Initial connection failed
Ping works:
ping acme-v02.api.letsencrypt.org
Pinging ca80a1adb12a4fbdac5ffcbc944e9a61.pacloudflare.com [172.65.32.248] with 32 bytes of data:
Reply from 172.65.32.248: bytes=32 time=5ms TTL=56
Reply from 172.65.32.248: bytes=32 time=5ms TTL=56
Reply from 172.65.32.248: bytes=32 time=5ms TTL=56
Reply from 172.65.32.248: bytes=32 time=5ms TTL=56
Tracert works:
tracert acme-v02.api.letsencrypt.org
Tracing route to ca80a1adb12a4fbdac5ffcbc944e9a61.pacloudflare.com [172.65.32.248]
over a maximum of 30 hops:
1 <1 ms <1 ms <1 ms 192.168.5.1
2 2 ms 2 ms 2 ms 1-212-212-87.ftth.glasoperator.nl [87.212.212.1]
3 4 ms 4 ms 4 ms 10.227.142.86
4 5 ms 4 ms 4 ms 10.226.11.0
5 6 ms 30 ms 18 ms 141.101.65.137
6 6 ms 5 ms 5 ms ams-ix.as13335.net [80.249.211.140]
7 6 ms 4 ms 7 ms 141.101.65.137
8 5 ms 5 ms 5 ms 172.65.32.248
Trace complete.
But when I try to visit https://acme-v02.api.letsencrypt.org, I get:
Can’t connect securely to this page
This might be because the site uses outdated or unsafe TLS security settings. If this keeps happening, try contacting the website’s owner.
I am not blocking any outgoing traffic, other websites work fine.
Operating system is Windows Server 2019.
I can run wacs.exe fine on a different computer.
How can this stop working when nothing has changed?
Regards,
JustMe1970.