Compound File Binary Format , a container format defined by Microsoft COM. It can contain the equivalent of files and directories. It is used by <https://en.wikipedia.org/wiki/Windows_Installer> Windows Installer and for documents in older versions of <https://en.wikipedia.org/wiki/Microsoft_Office> Microsoft Office . [44] It can be used by other programs as well that rely on the COM and OLE API's. (0xD0CF11E0 visually resembles "DOCFILE". [45] ) — file signature D0 CF 11 E0 A1 B1 1A E1 at offset 0

For Compound File Binary Format , a container format defined by Microsoft COM. It can contain the equivalent of files and directories. It is used by <https://en.wikipedia.org/wiki/Windows_Installer> Windows Installer and for documents in older versions of <https://en.wikipedia.org/wiki/Microsoft_Office> Microsoft Office . [44] It can be used by other programs as well that rely on the COM and OLE API's. (0xD0CF11E0 visually resembles "DOCFILE". [45] ), hex signature is D0 CF 11 E0 A1 B1 1A E1; extension is doc xls ppt msi msg, recorded from its source on 2026-08-03.

What the source says

doc xls ppt msi msg | <https://en.wikipedia.org/wiki/Compound_File_Binary_Format> Compound File Binary Format , a container format defined by Microsoft COM. It can contain the equivalent of files and directories. It is used by <https://en.wikipedia.org/wiki/Windows_Installer> Windows Installer and for documents in older versions of <https://en.wikipedia.org/wiki/Microsoft_Office> Microsoft Office . [44] It can be used by other programs as well that rely on the COM and OLE API's. (0xD0CF11E0 visually resembles "DOCFILE". [45] )

— en.wikipedia.org, retrieved 2026-08-03

Source

• en.wikipedia.orghttps://en.wikipedia.org/wiki/List_of_file_signatures

Last verified against source: 2026-08-03. Due for re-check by 2027-08-03. This page as Markdown · OKF bundle · full dataset as JSON.