STOP 0x000001CA
SYNTHETIC_WATCHDOG_TIMEOUT
A watchdog in a virtual machine detected the system hung — seen in VMs and cloud instances rather than physical PCs.
Likely causes, most common first
- An overloaded or paused VM host
- Virtualization driver/integration-services problems
How to fix it
1. Check the virtualization layer moderate
- Update the VM's integration services/guest tools.
- Check host CPU/disk load — a starved host causes exactly this.
- Update the hypervisor.
The four parameters on the blue screen
Windows shows four hex numbers with this stop code. Here's what each means — our analyzer decodes them automatically from your dump file.
| Parameter 1 | Varies |
| Parameter 2 | Varies |
| Parameter 3 | Varies |
| Parameter 4 | Varies |
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