DA1 file extension

Registry backup

Run a free instant scan for .DA1 file errors

A .DA1 file is known as a Registry backup.

This file extension was added to our database by a visitor to this site, but no further information was provided. We have yet to investigate the DA1 file extension any further, or there was simply not enough information available at the time to report accurately on this format.

However, it is possible that other file formats exist that use the DA1 extension, so please let us know if you do not think this extension matches the file format you are looking for.