How to Repair WMI
When Q starts, it talks to the Windows Management Instrumentation service (WMI). This is a core part of Windows that lets third-party programs query information about your computer's hardware. Q uses this as part of its licensing scheme.
WMI is unfortunately quite fragile and may break as a result of:
- system upgrades
- running out of hard disk space
- memory or other hardware problems
Diagnosing WMI Problems
Open a command prompt (see how-to), and enter the following commands, pressing Enter after each one:
wmic path win32_physicalmemory get capacity
wmic path win32_physicalmedia get serialnumber
wmic nic get MACAddress, PNPDeviceID
You should see results like the following:
C:\Users\Q>wmic path win32_physicalmemory get capacity Capacity 4294967296 4294967296 C:\Users\Q>wmic path win32_physicalmedia get serialnumber SerialNumber E2AB1Z8O 30026A724406875B Z1IK30DPKAEZ C:\Users\Q>wmic nic get MACAddress, PNPDeviceID MACAddress PNPDeviceID ROOT\KDNIC\0000 01:00:87:00:F3:18 ROOT\NET\0000 14:BA:E3:11:8B:AE PCI\VEN_10EC&DEV_8198&SUBSYS_84321943&REV_06\4&1D7623B1&0&00E2
If you see error messages instead, for any of the commands, you need to repair the WMI repository.
Repairing the WMI Repository
The following guide from Microsoft on repairing the WMI repository has been tested by Q support and worked on a Windows 10 machine whose repository was corrupted by memory problems:
When Q support followed the guide, we:
- Started following the steps in Actions to try:
- Followed step a, which re-registered WMI files and services by running a .bat file under a command prompt with Administrator privileges.
- Followed step b, by rebooting and running winmgmt /verifyrepository, which verified the repository was correct.
- Previously broken wmic commands now worked, and Q was able to start.