Files with csi extension can be usually found as temporary files generated by Microsoft SharePoint Server 2007.
CSI file extension - Microsoft SharePoint Server 2007 temporary
What is csi file? How to open csi files?
File type specification:
csi file icon:
The csi file extension is associated with Microsoft SharePoint Server 2007.
These csi files are temporary files created during the backup process. They serve no purpose and can be deleted.
List of recommended software applications associated to the .csi file extension
Recommended software programs are sorted by OS platform (Windows, macOS, Linux etc.) and possible program actions
that can be done with the file: like open csi file, edit csi file, convert csi file, view csi file, play csi file etc. (if exist software for corresponding action in File-Extensions.org's database).
- Others csi file
Unspecified and all other actions for computer programs working with csi file - Microsoft SharePoint Server 2007 temporary
Click on the software link for more information about Microsoft SharePoint Server. Microsoft SharePoint Server uses csi file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).