windows 7 Windows Anytime Upgrade has stopped working

[Guest Mike Llewellyn]

Hey folks, attempting to upgrade from Windows 7 Pro to Windows 7 Ultimate. I'd really rather not do a full OS install starting with Ultimate, so any help is much appreciated. Initially when attempting the upgrade WAU gave an error that it couldn't create a restore point. I resolved this by giving myself permissions on the System Volume Information folder, but now when I run WAU I get a "Windows Anytime Upgrade has stopped working" error.

 

 

If I check the Event Viewer I find the below under applications. Can anyone help?

 

Faulting application name: WindowsAnytimeUpgrade.exe, version: 6.1.7600.16385, time stamp: 0x4a5bc995

Faulting module name: dismcore.dll, version: 6.1.7601.17514, time stamp: 0x4ce7c5d9

Exception code: 0xc0000005

Fault offset: 0x00000000000220e7

Faulting process id: 0x17fc

Faulting application start time: 0x01d300c1dcfa9c2d

Faulting application path: C:\Windows\System32\WindowsAnytimeUpgrade.exe

Faulting module path: C:\Windows\system32\DISM\dismcore.dll

Report Id: 237a7547-6cb5-11e7-abc6-c4346b26ae9e

 

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