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Format

Microsoft Excel Backup

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Summary

Name
Microsoft Excel Backup
Identifiers
PUID: x-fmt/23
Format type
Spreadsheet
Description
Microsoft Excel has a built-in AutoRecover feature that has replaced the AutoSave add-in that exists in versions of Excel that are earlier than Microsoft Excel 2002. The AutoRecover feature saves copies of all open Excel files at a user-definable fixed interval. The files can be recovered if Excel closes unexpectedly, for example, during a power failure.
File extensions
xlk
Source
Digital Preservation Department / The National Archives

Changelog

  • Updated in V86

    Release date
    27 July 2016

    Microsoft Excel Backup: Removed .bak extension in favour of a new generic entry for extension-only .bak files: fmt/941 - Back Up File. If a binary signature is ever developed for Microsoft Excel Backup there is scope to re-apply this extension.

  • Updated in V83

    Release date
    17 December 2015

    Microsoft Excel Backup: Added description.