App-V 5 App not launching / repair error code 040000002C

If this key, associated with a users SID, is incorrectly formed then App-V apps may not launch for the user and app-v repair commands return an error code 040000002C

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\AppV\Client\Virtualization\LocalVFSSecuredUsers

S-1-5-21-1529150018-825634664-3829716540-1086429
REG_SZ
C:\users\default\AppData\Local\Microsoft\AppV\Client\VFS

This is incorrect they key should have the correct value of:
%USERPROFILE%\AppData\Local\Microsoft\AppV\Client\VFS

Changing the data value and rebooting resolves the issue.

The cause of the key change to the incorrect key is unknown at the time of posting.

This fix was derived from the information in this post:

http://www.applepie.se/app-v-5-and-publishing-error-code-040000002c