Open Live Writer uses several registry keys. For a complete uninstall, you should delete them.
They are located at
There are several keys of special interest:
You can turn off automatic updates by turning off
For automatically loading the nightly builds - use this carefully as we may be unsuccessfully testing a new feature, create a dword key for
CheckForBetaUpdates 1 = beta, 0 = regular
AutoUpdate, change the DWord key to 0
Stores the location and information for your weblogs. Many users have copied the entries from LiveWriter rather then reenter them.