Connection error 401: permission denied - invalid PVE ticket

tuberb

New Member
Dec 7, 2025
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I moved from ESXi to Proxmox about a year ago, and have had no issues, but I am still a Proxmox newbie.

I manually renew Let's Encrypt certificates every 90 days and install them in Proxmox through the GUI. I went to do that yesterday, and must have done something wrong because after trying to upload the cert I got an error message (did not note the details) and could not get back to the GUI.

After poking around a bit I was finally able to put the new certificates manually into /etc/pve/local/pveproxy-ssl.pem and /etc/pve/local/pveproxy-ssl.key and the errors went away and I am able to reach the login form. But every time I try to login I get "Connection error 401: permission denied - invalid PVE ticket".

I have confirmed that the date/time are correct and tried different browsers with cleared cookies and caches and also created a new admin user from the command line. I have restarted pvedaemon, pveproxy and pvestatd. I did see this post: https://forum.proxmox.com/threads/authentication-failure-invalid-pve-ticket.148089/ which talked about a solution but it was not clear exactly how to do some of the steps suggested so I could not follow it. I have done everything else I could think of, short of shutting down the VMs and restarting the physical machine Proxmox is running on, which I am reluctant to do unless it is necessary.

Any suggestions on how to troubleshoot this further and be able to login again? My VMs are still running fine but I just can't reach Proxmox.
 
Just tried to login a day after posting this and was able to. So whatever was causing the "invalid PVE ticket" must have timed out.

If anyone knows how this could have been resolved without just waiting, it might be useful to post that, otherwise I am all set.