What version of Hoster do you have? We upgraded the security in
version 3.120 to be more tolerant.
Read the FAQ on this topic here. Be sure all Windows updates have been made to your computer. If not updated periodically Windows will cause this error.
If Windows is kept updated, this error message should only appear when major changes are made to your computer, which changes the security components Hoster expects to find. For example; your Windows was re-installed, or you might have a network card (wireless?) that you plug/unplug, or something else.
Think about what you do to the computer that might change the hard/software components... including the last time you upgraded windows.