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ERROR_GRAPHICS_CANT_LOCK_MEMORY
ERROR_GRAPHICS_CANT_LOCK_MEMORY (0xC0262101) means the graphics memory manager could not probe and lock the underlying memory for an allocation. The allocation or its backing memory is not in a state that can safely be locked for the requested operation.
What to check
- Verify allocation lifetime, memory residency, and synchronization before requesting a lock or map.
- Do not retain pointers or mappings across device reset, adapter change, or resource destruction.
- For driver development, inspect the allocation type and the code path that establishes its backing memory.
Useful command
Get-WinEvent -LogName System -MaxEvents 150 | Where-Object { $_.ProviderName -match 'Display|dxgkrnl' }Microsoft: Display/Graphics overview
Microsoft: WDDM timeout detection and recovery
Microsoft: Graphics error codes
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