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STATUS_COMMITMENT_LIMIT
Windows cannot promise backing storage for additional committed memory
Committed private memory must be backed by physical memory or paging files. The system commit limit is based on RAM available for pageable contents plus the sizes of paging files. Reaching it can cause allocations and process creation to fail even when Task Manager still shows some available physical memory.
Measure committed bytes and the limit at the failure timestamp. Then find which processes or kernel components increased commit. A system-managed page file can grow, but growth itself can be delayed or blocked by free-space and storage constraints; relying on emergency expansion is less robust than sizing and leak detection.
What to inspect
- Capture Memory > Committed Bytes, Commit Limit, process commit, and paged-pool growth.
- Check page-file maximums, free disk space, and events showing failed or slow expansion.
- Identify sustained commit growth before increasing limits, because a leak will consume the new capacity too.
References
- Microsoft: Introduction to the page file
- Microsoft: Page-file growth and allocation failures
- Microsoft: Memory management functions
- Microsoft Open Specifications: NTSTATUS values
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