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ERROR_PATCH_NO_SEQUENCE
Multiple patches transform the same product database in sequence
ERROR_PATCH_NO_SEQUENCE (1648) means Windows Installer cannot construct a valid ordering for the requested patches. Patch sequence rules can express product-family membership, target version bounds, sequence values, supersedence, and obsolescence. The result is not simply a filename sort failure.
Each applicable patch transforms the product database seen by subsequent patches. A set can therefore contain individually valid MSP files that cannot be applied together in the supplied product state, or that require a baseline/earlier patch not present in the transaction.
How to diagnose the set
- Extract PatchCode, target product data, and MsiPatchSequence rows from every MSP.
- Determine the currently applied patch state of the product.
- Apply the vendor's documented baseline and servicing order.
- Check for mutually exclusive, obsolete, or superseded patches.
- Test sequencing with the exact product version and language, not a rebuilt approximation.
- Do not merge patch payloads manually; file replacement bypasses MSI component state.
References
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