The frustration continues

So after almost a full week of not having issues with the Windows 10 Universal apps, this morning I'm experiencing the same issue again;

The Calendar and Mail apps start, but as soon as I want to interact with the apps, they crash to desktop. This is incredibly frustrating!

The Event Viewer log is again filling up with the same "Access is denied" error entries as before.

I've reported this issue to Microsft both through the Feedback tool and on "answers.microsoft.com";

To me, this looks like a clear structural underlying permissions issue in the whole Universal Apps stack tree.

Also, everytime apps crash like this I feel like a dumb idiot still trying to use Microsoft's apps. What are regular users supposed to do?

This is a thread on Answer.microsoft.com: "Mail App stopped working in Windows 10" - Over 130 frustrated Windows users (!) looked for this issue and reported that they are having the same problem since August 1st, 2015. There is still no conclusive fix available.

@Microsoft: fix the permissions issue in Windows 10 Universal Apps! Create a better crash handler already!

Error logs

Here are a couple of the application "error" entries from the Event log:

Log Name:      Application
Source:        Microsoft-Windows-Immersive-Shell
Date:          2015-11-02 09:08:11
Event ID:      5973
Task Category: (5973)
Level:         Error
Keywords:
User:          SURFACE\Johan
Computer:      Surface
Description:
Activation of app Microsoft.Windows.Cortana_cw5n1h2txyewy!CortanaUI failed with error: Access is denied.
 See the Microsoft-Windows-TWinUI/Operational log for additional information.
Event Xml:

  
    
    5973
    0
    2
    5973
    0
    0x2000000000000000
    
    96954
    
    
    Application
    Surface
    
  
  
    Microsoft.Windows.Cortana_cw5n1h2txyewy!CortanaUI
    -2147024891
  

Log Name:      Application
Source:        Microsoft-Windows-Immersive-Shell
Date:          2015-11-02 09:08:06
Event ID:      5973
Task Category: (5973)
Level:         Error
Keywords:
User:          SURFACE\Johan
Computer:      Surface
Description:
Activation of app Microsoft.Windows.Cortana_cw5n1h2txyewy!CortanaUI failed with error: Access is denied.
 See the Microsoft-Windows-TWinUI/Operational log for additional information.
Event Xml:

  
    
    5973
    0
    2
    5973
    0
    0x2000000000000000
    
    96953
    
    
    Application
    Surface
    
  
  
    Microsoft.Windows.Cortana_cw5n1h2txyewy!CortanaUI
    -2147024891
  

Log Name:      Application
Source:        Microsoft-Windows-Immersive-Shell
Date:          2015-11-02 09:07:56
Event ID:      5973
Task Category: (5973)
Level:         Error
Keywords:
User:          SURFACE\Johan
Computer:      Surface
Description:
Activation of app Microsoft.Windows.CloudExperienceHost_cw5n1h2txyewy!App failed with error: Access is denied.
 See the Microsoft-Windows-TWinUI/Operational log for additional information.
Event Xml:

  
    
    5973
    0
    2
    5973
    0
    0x2000000000000000
    
    96952
    
    
    Application
    Surface
    
  
  
    Microsoft.Windows.CloudExperienceHost_cw5n1h2txyewy!App
    -2147024891
  

Log Name:      Application
Source:        Microsoft-Windows-Immersive-Shell
Date:          2015-11-02 09:07:56
Event ID:      5973
Task Category: (5973)
Level:         Error
Keywords:
User:          SURFACE\Johan
Computer:      Surface
Description:
Activation of app microsoft.windowscommunicationsapps_8wekyb3d8bbwe!ppleae38af2e007f4358a809ac99a64a67c1 failed with error: Access is denied.
 See the Microsoft-Windows-TWinUI/Operational log for additional information.
Event Xml:

  
    
    5973
    0
    2
    5973
    0
    0x2000000000000000
    
    96951
    
    
    Application
    Surface
    
  
  
    microsoft.windowscommunicationsapps_8wekyb3d8bbwe!ppleae38af2e007f4358a809ac99a64a67c1
    -2147024891