Fresh Proxmox 8.4 install and 9.1 install - web UI white screen, ERR_CONNECTION_TIMED_OUT on most static files

Cuatro

New Member
May 10, 2026
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I've done multiple fresh installs of Proxmox (tried 8.4 and 9.1) on a Dell OptiPlex 7020 and I'm consistently getting a white screen when accessing the web UI at my proxmox ip.

What I've verified:
  • Network connectivity is perfect (100 pings, 0% loss, 2ms average from PC to Proxmox)
  • pveproxy service is active and running
  • Tried multiple browsers (Chrome, Firefox, Edge, Brave) on both PC and Mac
  • Cleared cache completely
  • ext-all.js exists at /usr/share/javascript/ext.js/ext-all.js
Console errors:
  • Most static files: net::ERR_CONNECTION_TIMED_OUT (CSS files, charts.js, u2f-api.js, qrcode.min.js, proxmoxlib.js, pvemanagerlib.js, locale-en.js)
  • ext-all.js: net::ERR_CONTENT_LENGTH_MISMATCH 200 (OK)
  • Uncaught Reference Error: Ext is not defined
Setup:
  • Hardware: Dell OptiPlex 7020
  • Network: ethernet to Spectrum modem/router, my proxmox ip
  • Hostname: pve.internal (For some reason it says just pve)
  • Tried both Proxmox 8.4 and 9.1 - same issue on both

journalctl shows pveproxy starting normally with no errors. Any ideas what's causing the connection timeouts on local network when ping shows 0% loss?

PLEASE HELP BEEN AT THIS FOR HOURS TRIED RESEARCH BUT NOTHING WORKS