# 44 43 4D 01 50 41 33 30 50 41 33 30 — File format magic numbers

For 44 43 4D 01 50 41 33 30 50 41 33 30, offset is 0; format is Windows Update Binary Delta Compression file, recorded from its source on 2026-08-03.

- **Hex signature:** 44 43 4D 01 50 41 33 30 50 41 33 30 _(unconfirmed — we could not tie this to the quote below)_
- **Offset:** 0
- **Format:** Windows Update Binary Delta Compression file _(unconfirmed — we could not tie this to the quote below)_

## What the source says

> DCM␁PA30 PA30 | 0 | | Windows Update <https://en.wikipedia.org/wiki/Binary_delta_compression> Binary Delta Compression file [ 60 ] |

## Source

- https://en.wikipedia.org/wiki/List_of_file_signatures

Last verified: 2026-08-03. Review by: 2027-08-03.
Part of [File format magic numbers](https://referencesource.org/file-format-signatures/).