0x8004028A 1 Question Ask question Search Order By: NewCategoryClear Filter 4 Votes 1 Ans Unexpected Exception [Exception from HRESULT: 0x8004028A]: The client is unknown. Solved1.41K viewsJaime Leal [SLC] [DevOps Advocate] Selected answer as best 24th November 20200x8004028A client unknown