I am running Windows Server 2012 R2 Standard inside VMware since summer 2016.  The machine services roughly 25 users.  It runs Office 2016 as well as a few smaller apps. Every day over the past week I transferred a few users from other hosts to this new machine.  I did so manually, moving them to a new container in AD and logging them on to perform last configuration steps.

Today in the middle of moving a certain user, I noticed that I could not access control panel from this user anymore.  I also cannot right-click the clock and select "settings".  I can, but no window appears. I cannot change file type associations, like have Acrobat Reader be the default application for PDF, for example.

I see these events in event log (translated from German - wording might be off):

Event log name: Application Source:        Application Error Date:         17.01.2017 19:09:49 Event-ID:   1000 Task category:(100) Level:         Error Key words:classic User:      not applicable Computer:      Terminal.domain.local Description: Name of faulty appication: Explorer.EXE, Version: 6.3.9600.18231, time stamp: 0x56b8c9f1 Name of faulty module: twinui.appcore.dll, Version: 6.3.9600.18423, time stamp: 0x5793b4e5 Exception code: 0x80270233 Error offset: 0x000000000008c5fb ID of offending process: 0x2638 Starting time of faulty application: 0x01d270ece31d371a Path of faulty application: C:\Windows\Explorer.EXE Path of faulty module: C:\Windows\System32\twinui.appcore.dll Report-ID: 225299c0-dce0-11e6-80cd-000c29aeead0

<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">   <System>     <Provider Name="Application Error" />     <EventID Qualifiers="0">1000</EventID>     <Level>2</Level>     <Task>100</Task>     <Keywords>0x80000000000000</Keywords>     <TimeCreated SystemTime="2017-01-17T18:09:49.000000000Z" />     <EventRecordID>118583</EventRecordID>     <Channel>Application</Channel>     <Computer>Terminal.domain.local</Computer>     <Security />   </System>   <EventData>     <Data>Explorer.EXE</Data>     <Data>6.3.9600.18231</Data>     <Data>56b8c9f1</Data>     <Data>twinui.appcore.dll</Data>     <Data>6.3.9600.18423</Data>     <Data>5793b4e5</Data>     <Data>80270233</Data>     <Data>000000000008c5fb</Data>     <Data>2638</Data>     <Data>01d270ece31d371a</Data>     <Data>C:\Windows\Explorer.EXE</Data>     <Data>C:\Windows\System32\twinui.appcore.dll</Data>     <Data>225299c0-dce0-11e6-80cd-000c29aeead0</Data>     <Data>     </Data>     <Data>     </Data>   </EventData> </Event>

I ran dism.exe /online /cleanup-image /scanhealth No result - no errors found.

Just noticing:  If I add a new user "John Doe", this issue does not occur.  But if I delete the previous user, delete his profile under "extended system settings" -> profiles and log in again to try over, it happens every time. Also with the test user name that I used previously.

Any idea?