TGrid::Connect not working

O²
1

Dear all,

I have an issue with TGrid::Connect that prevents me to run any O2 workflow.

If I do:

root -l
TGrid::Connect("alien://")
Info in <TJAlienConnectionManager>: Opening connection to JCentral. Please wait
Info in <TJAlienConnectionManager>: Opening connection to 128.142.249.47
Info in <TJAlienConnectionManager>: Opening connection to 128.142.249.31
...
Info in <TJAlienConnectionManager>: Opening connection to ::ffff:128.142.249.53
Info in <TJAlienConnectionManager>: Opening connection to ::ffff:128.142.249.51
Info in <TJAlienConnectionManager>: Opening connection to ::ffff:128.142.249.29
Error in <TJAlienConnectionManager>: Failed to connect to any server! Giving up
(TGrid *) 0x942017200

Notice that when I launch alien.py everything seems to be working fine, so it does not seem to be a problem of certificates.

I am using the latest alidist (master of few minutes ago) on Mac OS 26.3 with Xcode 26.2

Thanks in advance,

best regards,

Diego

2

For info, if I try the very same pem files on lxplus with: O2/daily-20260220-0000-1, the TGrid::Connect(“alien://”) works as expected….

I tried on an another network and it seems to work. Will try again with the eduroam network tomorrow.

3

The problem is definitely related with the eduroam settings of the institute. Sorry for the noise.