I have installed the newly released Windows 10 and now get the following error message in the Event Viewer when starting a modern app:
Activation of application Microsoft.WindowsStore_8wekyb3d8bbwe!App failed with error: Unknown HResult Error code: 0xc0eb0003 See the Microsoft-Windows-TWinUI/Operational log for additional information.
I can't see the Microsoft-Windows-TWinUI/Operational log either:
I saw a post on the Microsoft website about a preview build with this error, but the answer was just to upgrade to the later build.
I have recently installed lots of software ranging from Gimp to SQL Server, so have no idea what could have caused this. I also disabled Hyper-V too so I can use VMware
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Best Answer
I had the exact same issue. Set up Win 10 with a clean install, installed some applications and some time later I was not able to open the start menu or edge.
Cortana, Edge and windows shell experience host created a Activation of application x failed with error entry in the event log everytime I tried to open one of them.
I ended up deleting and recreating the user which fixed the issue for me, even after I restored the same settings and applications.