Hi, I am new this project but can't add it to boinc manager. When I try to add I get this log entries.
05/10/2021 22:43:59 | | Fetching configuration file from https://quchempedia.univ-angers.fr/athome/get_project_config.php
05/10/2021 22:44:00 | | Project communication failed: attempting access to reference site
05/10/2021 22:44:02 | | Internet access OK - project servers may be temporarily down.

Any help appreciated.

When did you do it? They are down for maintenance every night around 00:00 UTC for an hour or two.

I got this on my windows machine too, and the time is around 11:00 UTC
but everything is normal on all the LINUX machines.

Try again with Win10 but the same log messages
06/10/2021 13:28:55 | | Fetching configuration file from https://quchempedia.univ-angers.fr/athome/get_project_config.php
06/10/2021 13:28:57 | | Project communication failed: attempting access to reference site
06/10/2021 13:28:59 | | Internet access OK - project servers may be temporarily down.
I will try again after install ubuntu on hyper-v maybe it will works

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I think the problem CA certificates so I will wait

https://boinc.berkeley.edu/forum_thread.php?id=14413

Ok I made the temporary fix ca-bundle.crt from boinc side https://boinc.berkeley.edu/forum_thread.php?id=14422
but now no WUs ? server status page shows NWChem 854455 16179 Task data as of 8 Oct 2021, 13:34:42 UTC
and I get these logs
08/10/2021 16:36:16 | QuChemPedIA@home | Sending scheduler request: Project initialization.
08/10/2021 16:36:16 | QuChemPedIA@home | Requesting new tasks for CPU and AMD/ATI GPU
08/10/2021 16:36:17 | QuChemPedIA@home | Scheduler request completed: got 0 new tasks
08/10/2021 16:36:17 | QuChemPedIA@home | No tasks sent
08/10/2021 16:36:17 | QuChemPedIA@home | No tasks are available for NWChem
08/10/2021 16:36:17 | QuChemPedIA@home | Project requested delay of 7 seconds
08/10/2021 16:36:27 | QuChemPedIA@home | Sending scheduler request: To fetch work.
08/10/2021 16:36:27 | QuChemPedIA@home | Requesting new tasks for CPU
08/10/2021 16:36:28 | QuChemPedIA@home | Scheduler request completed: got 0 new tasks
08/10/2021 16:36:28 | QuChemPedIA@home | No tasks sent
08/10/2021 16:36:28 | QuChemPedIA@home | No tasks are available for NWChem
I think temporary solution only solves project registiration problem or server status page shows wrong data

I 've tried to connect to all BOINC projects to which I am not curently connected. I was unable to connected to about one half of them.
Tullio

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Same problem here, I tried to add that project today:

31/10/2021 13:09:07 | | Fetching configuration file from https://quchempedia.univ-angers.fr/athome/get_project_config.php
31/10/2021 13:09:08 | | Project communication failed: attempting access to reference site
31/10/2021 13:09:09 | | Internet access OK - project servers may be temporarily down.

Did you install the latest BOINC version, 7.16.20? That fixed my problem an I am getting tasks.
Tullio

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I had 7.16.11
I updated to 7.16.20 and now it works!

So yeah, confirming that with the latest BOINC version it works, thank you!