Windows 11 freeze a few minutes after login (since ~27.03 release)

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Title: Windows 11 freeze a few minutes after login (since ~27.03 release)

Description:
After updating the Nextcloud Desktop Client, multiple Windows 11 systems become unresponsive a few minutes after boot/login.

Environment:

  • OS: Windows 11 (multiple systems, 4 devices affected)

  • Nextcloud Desktop Client: version released around 27.03 (exact version unknown, latest at that date)

  • Setup: standard sync client with existing sync folders

Steps to reproduce:

  1. Boot Windows 11

  2. Let system idle for a few minutes after login

  3. Nextcloud client starts automatically and begins syncing

  4. System becomes very slow or freezes (Explorer sometimes unresponsive)

Observed behavior:

  • System freeze or heavy slowdown after a few minutes

  • Often coincides with Nextcloud sync start

  • Explorer may hang

Expected behavior:

  • Stable system behavior during and after sync

Workaround:

  • Downgrading the Nextcloud Desktop Client to an earlier version (e.g. early March release) resolves the issue completely

  • Disabling autostart also prevents the freeze

Additional notes:

  • Issue reproducible on 4 independent systems

  • Strong indication of regression in recent release

I recommend to post your issue at Github with detailed information about desktop client version:

Version: 33.0.1 ( 27. März 2026). Updated automatically. Running NC on my home network with a Cloudflate domain