The ha.fmt file is a format file belonging to the MultiArc plugin from Eugene Roshal & FAR Group.  FAR is a file manager program and MultiArc is an archiver plugin that provides the ability for the file manager to use different types of archive files within the manager itself.  The ha.fmt file supports the HA archive format, a DOS era compression method that uses arithmetic/Markov coding.

If this file is missing or the proper support files for this format are not installed, you will get an error when you attempt to open files in this format from the file manager.  You might be able to fix this issue by running a registry cleaner.

ZookaWare PC Cleaner is a registry cleaner, which means that ZookaWare PC Cleaner goes through the thousands of entries in the Windows registry database and checks each one for errors, fixing any problems.  The registry is used by Windows to track all the files installed on your computer, so having no errors is important if you want your system to run.

ZookaWare PC Cleaner keeps your registry clean, which in turn keeps your system stable and running smoothly.  Try a free ZookaWare PC Cleaner scan now to see if your registry needs to be cleaned.

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SpeedZooka runs on Windows XP, Vista, 7 and 8. It has no ads, popups or bundled software and fully uninstalls by clicking Start > All Programs > select SpeedZooka and click Uninstall.

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