Tzhizhu
Home / developer-tools / Fix Windows Update Config Sync Issues Between Devices - Apache 521 Connection Refused Troubleshooting-How to Fix Windows Security High Memory Usage

Fix Windows Update Config Sync Issues Between Devices - Apache 521 Connection Refused Troubleshooting-How to Fix Windows Security High Memory Usage

Updated 2026-06-13 14:20:53developer-tools
Fix Windows Update Config Sync Issues Between Devices - Apache 521 Connection Refused Troubleshooting-How to Fix Windows Security High Memory Usage
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.

Related Software Guides

Fix Microsoft Teams Camera Not Working in Meeting Fix Microsoft Teams Camera Not Working in Meeting Fix VMware Network Adapter Not Working in Bridged Mode Fix VMware Network Adapter Not Working in Bridged Mode Windows Update Cleanup: Free Up Disk Space Checklist Windows Update Cleanup: Free Up Disk Space Checklist How to Enable Automatic Windows Update Startup How to Enable Automatic Windows Update Startup How to Fix Windows Login Loop by Adjusting Security Settings How to Fix Windows Login Loop by Adjusting Security Settings Fix DNS Probe Finished NXDOMAIN on Chrome for Mac Fix DNS Probe Finished NXDOMAIN on Chrome for Mac