If you recently encountered a green screen crash (BSOD) on a Windows Insider Build. The issue stemmed from leaving Windows Insider enrollment enabled while testing Windows Update policies (via CSP). After several reboots and repeated attempts to enter the recovery key, the system remained inaccessible except through Safe Mode.
Ultimately, removing external USB adapters resolved the problem, allowing the machine to boot normally.
Symptoms
Windows Insider Build: The laptop was enrolled in the Windows Insider Program.
Green Screen (BSOD): The system displayed a “SYSTEM_THREAD_EXCEPTION_NOT_HANDLED” error referencing a network driver (e.g.,
rtwlanu.sys).Recovery Key Prompts: Entering the BitLocker recovery key multiple times did not restore normal access.
Safe Mode Only: Booting into Windows Safe Mode worked, but normal boot failed.
Root Cause
USB Adapters: External USB network or Bluetooth adapters can conflict with certain Insider Build drivers or processes. This conflict caused the Insider Build to crash during normal startup.
Resolution
Boot into Safe Mode
If the device is stuck in a crash loop, boot into Safe Mode.
Remove External USB Adapters
Unplug any external USB dongles (e.g., Wi-Fi or Bluetooth adapters).
Restart the PC normally.
Confirm Normal Operation
After removing the adapters, the device should boot without errors.
Preventive Measures
Disable Windows Insider Enrollment
If you do not need to run Insider builds long-term, revert to a stable build channel to avoid driver incompatibilities.
Test Updates on Non-Production Machines
If you’re experimenting with Windows Update CSP or Insider builds, use a dedicated test device to avoid disruptions on critical systems.
Update Drivers
If you must use an external USB adapter, check the vendor’s website for updated drivers compatible with Insider builds.
Additional Help
If you continue to experience crashes or boot issues:
Disconnect unnecessary peripherals again and reboot.
Check for Driver Updates within Windows (or from the manufacturer’s site).
Contact Swif Support at support@swif.ai for further assistance.
By removing conflicting USB adapters, you can often regain normal operation on devices running Windows Insider builds. If you need more information or suspect a similar issue, feel free to reach out to our support team.