Backup Failing Failure Result: 800423F2

We have a Windows Server 2012 R2 fully patched.

Running the Native Windows Backup hangs the Server and we have to cancel it. In backup logs show (below).

We stop/started the relevant VSS services and ran a SFC we comes up ok. I'm at a loss what could cause this.

Writer Failures
Writer Id: {BE000CBE-11FE-4426-9C58-531AA6355FC4}
Instance Id: {AF62ABED-1801-4922-8239-E117D995CC44}
Writer Name: ASR Writer
Writer State: 9
Failure Result: 800423F2
Application Result: 1
Application Message: (null)
   Component: ASR
   Logical Path: ASR
   Component Result: 800423F2
   Component Message: (null)
   Component: Volume{a56d3c5e-2871-499b-84e2-ad086d27839f}
   Logical Path: Volumes
   Component Result: 800423F2
   Component Message: (null)
   Component: harddisk0
   Logical Path: Disks
   Component Result: 800423F2
   Component Message: (null)
Writer Id: {542DA469-D3E1-473C-9F4F-7847F01FC64F}
Instance Id: {2EFE3C03-DEED-42CD-8E9C-6F1E8331D05B}
Writer Name: COM+ REGDB Writer
Writer State: 9
Failure Result: 800423F2
Application Result: 1
Application Message: (null)
   Component: COM+ REGDB
   Logical Path: (null)
   Component Result: 800423F2
   Component Message: (null)
       File Spec: C:\Windows\Registration\* Recursive: 1
Writer Id: {4DC3BDD4-AB48-4D07-ADB0-3BEE2926FD7F}
Instance Id: {8A902016-0DAE-4F71-A627-34978D8F198E}
Writer Name: Shadow Copy Optimization Writer
Writer State: 9
Failure Result: 800423F2
Application Result: 1
Application Message: (null)
   Component: IISMETABASE
   Logical Path: (null)
   Component Result: 800423F2
   Component Message: (null)
Writer Id: {AFBAB4A2-367D-4D15-A586-71DBB18F8485}
Instance Id: {06D0F689-C3D2-4766-B95A-8C6C967F1193}
Writer Name: Registry Writer
Writer State: 9
Failure Result: 800423F2
Application Result: 1
Application Message: (null)
   Component: Registry
   Logical Path: (null)
   Component Result: 800423F2
   Component Message: (null)
       File Spec: C:\Windows\system32\config\default Recursive: 0
       File Spec: C:\Windows\system32\config\SAM Recursive: 0
       File Spec: C:\Windows\system32\config\SECURITY Recursive: 0
       File Spec: C:\Windows\system32\config\software Recursive: 0
       File Spec: C:\Windows\system32\config\system Recursive: 0
       File Spec: C:\Windows\System32\SMI\Store\Machine\schema.dat Recursive: 0
       File Spec: C:\Windows\system32\config\COMPONENTS Recursive: 0
       File Spec: C:\Windows\system32\config\DRIVERS Recursive: 0
       File Spec: C:\Windows\system32\config\BBI Recursive: 0
Writer Id: {2A40FD15-DFCA-4AA8-A654-1F8C654603F6}
Instance Id: {0CDBEC47-9461-4EE5-827A-02FD7349F86F}
Writer Name: IIS Config Writer
Writer State: 9
Failure Result: 800423F2
Application Result: 1
Application Message: (null)
   Component: IISCONFIG
   Logical Path: (null)
   Component Result: 800423F2
   Component Message: (null)
       File Spec: C:\Windows\system32\inetsrv\config\* Recursive: 0
Writer Id: {A6AD56C2-B509-4E6C-BB19-49D8F43532F0}
Instance Id: {45680552-4D9F-4962-875A-237274A27681}
Writer Name: WMI Writer
Writer State: 9
Failure Result: 800423F2
Application Result: 1
Application Message: (null)
   Component: WMI
   Logical Path: (null)
   Component Result: 800423F2
   Component Message: (null)
       File Spec: C:\Windows\system32\wbem\repository\*.* Recursive: 1
Writer Id: {59B1F0CF-90EF-465F-9609-6CA8B2938366}
Instance Id: {42233C65-D27C-4D90-8BCC-CAB3D41716C9}
Writer Name: IIS Metabase Writer
Writer State: 9
Failure Result: 800423F2
Application Result: 1
Application Message: (null)
   Component: IISMETABASE
   Logical Path: (null)
   Component Result: 800423F2
   Component Message: (null)
       File Spec: C:\Windows\system32\inetsrv\MetaBase.XML Recursive: 0
       File Spec: C:\Windows\system32\inetsrv\MBSchema.XML Recursive: 0
*-----------------------------*


Backup of volume C: has failed. The operation was cancelled by the user.

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