Fix Windows 11 Installation Assistant Stuck at 99% - Missing Taskbar Icons While Apps Run – Fix-Troubleshoot ERR_CONNECTION_RESET for Specific Sites

Updated 2026-07-28 14:30:03backup-recovery
Fix Windows 11 Installation Assistant Stuck at 99% - Missing Taskbar Icons While Apps Run – Fix-Troubleshoot ERR_CONNECTION_RESET for Specific Sites
Before changing system settings, save your work and note the exact error text so you can compare results after each step.

Extra verification checklist

  • Restart the affected app after changing permissions or configuration files.
  • Test the same workflow in a clean browser profile or a temporary user account.
  • Compare the result on another network if the error may be connection related.