Yesterday suddenly my windows file explorer looked strange (see screenshot) and even the behaviour of my mouse changed, where I always had to double click to open something, now it opens up with one click, i can't even change it back, and files & folders are now underlined if mouse hovers, I also noticed that I cannot press ALT+RIGHT MOUSE BUTTON, the context menu disappears in milliseconds.
All this happened after a update 2 days ago. I searched for a solution but didn't found no similar problems that could help me to fix this issue.
One possible solution (that didn't solve it) i tried was this, running from the command line:
DISM.exe /Online /Cleanup-image /Restorehealth
The refresh button and history button looks strange/wrong (see red circle):
Files and folder are now underlined (see red circle):
Changing to single click to open items is not possible:
I checked what happend during the last update and i found out that Microsoft Office 365 Business was updated/installed, maybe this issue is related to MS Office.
The last update in the update history:
"Funktionsupdate für Windows 10, Version 1709" (Translation: Featureupdate, Version 1709)