.CAT File

The cat file extension is used by various Microsoft applications for security catalog files.

Catalog files specify that a given set of files belongs to the same logical group of files.

When more than one distribution unit is required to distribute a component using Internet Component Download, a catalog file can be used to create an association of the required distribution units.

MIME types:
application/vnd.ms-pki.seccat

How to open:

These files are accessed directly by Windows when new system components are distributed.

How to convert:

We do not know about any possible conversion for this particular .cat file.