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SPAPI_E_INVALID_COINSTALLER
SPAPI_E_INVALID_COINSTALLER (0x800F0227) is a Windows SetupAPI driver-installation error. This code means SetupAPI could not use a co-installer referenced by the device package. A co-installer is a helper DLL that performs installation work beyond the INF; an invalid, missing, incompatible, or unsigned helper can stop the device installation.
What to check
- Locate the co-installer name and load failure in
setupapi.dev.log. - Verify that the complete vendor package was extracted and that its catalog/signature still matches the files.
- Prefer a current package using modern declarative INF mechanisms when the vendor provides one.
Microsoft: Co-installer operation
Microsoft: SetupAPI device installation log
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