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APPX_E_REQUESTED_RANGE_TOO_LARGE
APPX_E_REQUESTED_RANGE_TOO_LARGE means that a packaging API request becomes larger than 4 GB when expressed as a range of package blocks. It is an API range limitation, not proof that the entire package is invalid.
How to handle it
- Inspect the API request that reads or extracts package data and split oversized work into smaller ranges.
- Use 64-bit range calculations throughout the caller so a conversion or overflow is not hidden.
- Avoid assuming that a byte range maps one-to-one to storage blocks; let the packaging API define the valid range.
If the error comes from a third-party package tool, update it or use a workflow that supports the requested package size.
Microsoft: troubleshoot Windows app packages
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