Microsoft Dynamics GP chunk file
File type: Various data file
A .cnk file is a chunk file used by Microsoft Dynamics GP, Microsoft's business management and financial software.
It contains data used to add or update components of a Dynamics GP installation.
File type category:
Various data file
Date updated: October 9, 2026
Microsoft Dynamics GP is a Windows-based enterprise resource planning system from Microsoft that manages financial, operational, and other business information. Its chunk files are distribution packages for Dynamics GP components, such as application updates or customizations.
A .cnk file is intended to be processed by the corresponding Dynamics GP installation rather than opened as a document or edited as ordinary data. The format remains associated with the desktop Windows version of Microsoft Dynamics GP.
A .cnk file is not normally opened directly. To install its contents, place it in the appropriate Microsoft Dynamics GP application folder and start Dynamics GP, following the instructions supplied with the update or customization.
Do not rename or edit the file before installation.
A .cnk file is an installation or update package, not a document format, so it normally has no useful conversion path. Use it with the Microsoft Dynamics GP installation for which it was supplied.
Software applications that handle other tasks involving cnk files:
Microsoft Windows
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