Wisco Backup Outlook backup
File type: Backup file
The bko file extension identifies a backup archive created by Backup Outlook from Wisco.
The file contains backed-up Microsoft Outlook data and settings for restoration with the Backup Outlook utility.
File type category:
Backup file
Date updated: October 12, 2026
Backup Outlook is a Microsoft Windows utility from Wisco that backs up data and settings used by Microsoft Outlook. It creates .bko files as backup archives.
A BKO archive is intended to be used with Backup Outlook to restore the backed-up Outlook data and settings. The format is specific to this utility rather than a general-purpose Outlook document format.
Use Backup Outlook on Microsoft Windows to open and restore a .bko file. The file is intended to be handled by the utility that created it.
A BKO archive does not normally need conversion. Restore its contents with Backup Outlook, then use Microsoft Outlook's import or export features if the restored data must be saved in another format.
Software apps that backup bko files:
Microsoft Windows
Software apps that recover bko files:
Microsoft Windows
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