ndu.sys
Microsoft — Network data usage monitor
When blamed in a crash: Often a victim, dig deeper
What to do
Windows' network usage tracker — historically leak-prone, but blame usually belongs to the network driver or a VPN filter.
- Update network drivers and remove/update VPN software.
- Run Windows Update — Ndu fixes ship with cumulative updates.
Got a crash dump? Get your verdict in seconds
Drop the .dmp file into our analyzer — it runs entirely in your browser. No upload, no size limit, no account.
Analyze my dump file →