Excel crashes and slow performance

Windows Command prompt running OfficeBackgroundHandlerRegistration task flashes every hour [FIXED]

Last updated: June 7, 2017

ISSUE

After updating Office, you may experience a brief flashing window every hour, which triggers the OfficeBackgroundHandlerRegistration task to start running.

STATUS: FIXED

This issue is now fixed in Version 1705 (Build 8201.2075). To get the update Office, open any Office 2016 app and choose File > Account > Update Options > Update.