Note: This post is my personal opinion on how I've chosen to address this issue. Just because I've done this doesn't mean you should. Your mileage may vary, <insert your favorite standard disclaimers here>...
If you're on the Insider Previews for Windows 10 you probably recently received an update. Upon booting up you also may see the following error pop up:
There is a scheduled task that you can (temporarily) disable to get rid of this error.
Open up Task Scheduler from Control Panel
Open the Task Scheduler Library tree and move to Microsoft/Windows/WS
Right click on the task WSRefreshBannedAppsListTask and click Disable
You may want to re-enable this task in the future.