What is a .CI file?
The .CI file extension refers to a PolySpace Preprocessed Code File, which is primarily used as an operating system search file in Windows 2000 and later versions. These files store an index of search-related information that helps Windows quickly display results when you perform file system searches. Due to the extensive amount of data they can contain, .CI files might be quite large.
Typically, you can find .CI files in either user or system directories, located within a specific folder named \catalog.wci\. It's important to note that these files are not meant to be opened or edited manually, as they are crucial system files. They are generated by the Windows Search service, previously known as the Indexing Service. The executable file associated with this service is found at C:\Windows\System32\cisvc.exe.
If necessary, the Windows Search service can be disabled through the Windows Features window. This can be accessed by typing "Windows Search" into the search box in the Windows Start menu. However, be aware that turning off this service will disable the Windows Search functionality, which includes the search capabilities in Windows Explorer and the Start menu.
In summary, .CI files are essential for the Windows operating system to efficiently handle searches within the file system. These files should be left as they are to ensure the system functions correctly.
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