Proxmox 8.3.3: GUI not opening in Chrome behing tailscale

rogierl

Active Member
May 23, 2021
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Netherlands
rogier.lommers.org
Recently I started to have problems opening the Proxmox GUI in Chrome. This only happens in Chrome; when I open the GUI in Safari, it runs without any problems. See screenshot below to get an idea about how the inspector looks like. Other info that might be relevant:
  1. Proxmox is running behind tailscale, so I have not opened any ports to the outside world
  2. It used to work find for years, but as I said... recently it stopped working
  3. I was able to fix it by applying this: https://tailscale.com/kb/1133/proxmox.
Not sure what changed here, it is proxmox, is it chrome or is it taiscle?
Do others have the same problem here?

Screenshot 2025-02-14 at 08.38.56.png