title: Windows Phone SDK8 installation troobleshooting
body: <p>I was using Visual Studio 2012 + SDK 8.0 on a PC running Windows 8 (not pro), and I decide to buy another hard drive to install Windows Pro on the sam PC in order to run a Windows Phone emulator on the PC (PC is Asus N550 16Gb RAM and i7 4700 CPU)</p>
  
  <p>I bought a brand new SSD disk, and I installed (fresh) Windows 8.1 Pro 64-bit (The OS is genuine and activated)</p>
  
  <p>Then I faced a very annoying issue. The SDK8.0 installation always return an error which is difficult to understand</p>
  
  <p>Cannot post a screen capture since I just created my account on stackoverflow
  The error popup says
  Setup Failed
  Install cannot continue because some required components failed
  Please correct the following problem and restart the setup...</p>
  
  <p>And here is the extracted portion from the installation LOG file</p>
  
  <p>[12B8:1530][2013-10-08T09:43:50]: Verified acquired payload: cab0960DD077C2D6FBDD3FFD8F00AB28475 at path: C:\ProgramData\Package Cache.unverified\cab0960DD077C2D6FBDD3FFD8F00AB28475, moving to: C:\ProgramData\Package Cache{A2DFDB99-5576-391D-9F62-D1223A41C7F4}v11.0.50727\packages\MobileTools\AddIncoreres\MobileTools_Addincoreres_x86_enu.cab.
  [12A4:17CC][2013-10-08T09:43:50]: MUX:  Source confirmed
  [12A4:17CC][2013-10-08T09:43:50]: Acquiring package: Windows_MetroMinSDK, payload: Windows_MetroMinSDK, copy from: G:\packages\Windows_SDK\Win8SharedSDKTools.msi
  [12B8:1530][2013-10-08T09:43:50]: Error 0x800b0101: Failed to verify certificate chain policy status.
  [12B8:1530][2013-10-08T09:43:50]: Error 0x800b0101: Failed to get certificate chain for authenticode certificate.
  [12B8:1530][2013-10-08T09:43:50]: Error 0x800b0101: Failed to verify signature of payload: Windows_MetroMinSDK
  [12B8:1530][2013-10-08T09:43:50]: Failed to verify payload: Windows_MetroMinSDK at path: C:\ProgramData\Package Cache.unverified\Windows_MetroMinSDK, error: 0x800b0101. Deleting file.
  [12B8:1530][2013-10-08T09:43:50]: Error 0x800b0101: Failed to cache payload: Windows_MetroMinSDK
  [12A4:17CC][2013-10-08T09:43:50]: MUX:  Verify Failed.  Retry acquiring, Retry Count: 1 of 3
  [12A4:17CC][2013-10-08T09:43:50]: MUX:  Set Result: Return Code=-2146762495 (0x800B0101), Error Message=, Result Detail=, Vital=True, Package Action=Verify, Package Id=Windows_MetroMinSDK
  [12A4:17CC][2013-10-08T09:43:50]: Failed to cache payload: Windows_MetroMinSDK from working path: C:\Users\Didier\AppData\Local\Temp{2348da3b-1257-4a83-a554-b094a08d06d9}\Windows_MetroMinSDK, error: 0x800b0101.
  [12A4:17CC][2013-10-08T09:43:50]: Application requested retry of payload: Windows_MetroMinSDK, encountered error: 0x800b0101. Retrying...
  [12A4:17CC][2013-10-08T09:43:50]: Acquiring package: Windows_MetroMinSDK, payload: Windows_MetroMinSDK, copy from: G:\packages\Windows_SDK\Win8SharedSDKTools.msi
  [12A4:17CC][2013-10-08T09:43:50]: MUX:  Reset Result
  [12B8:1530][2013-10-08T09:43:50]: Error 0x800b0101: Failed to verify certificate chain policy status.
  [12B8:1530][2013-10-08T09:43:50]: Error 0x800b0101: Failed to get certificate chain for authenticode certificate.
  [12B8:1530][2013-10-08T09:43:50]: Error 0x800b0101: Failed to verify signature of payload: Windows_MetroMinSDK
  [12B8:1530][2013-10-08T09:43:50]: Failed to verify payload: Windows_MetroMinSDK at path: C:\ProgramData\Package Cache.unverified\Windows_MetroMinSDK, error: 0x800b0101. Deleting file.
  [12B8:1530][2013-10-08T09:43:50]: Error 0x800b0101: Failed to cache payload: Windows_MetroMinSDK
  [12A4:17CC][2013-10-08T09:43:50]: MUX:  Verify Failed.  Retry acquiring, Retry Count: 2 of 3</p>
  
  <p>I tried to install the big iso file or the small installation file (SDK8.0). Exactly same issue.</p>
  
  <p>Funny enough the same iso file installation was running successfull on the same PC (running windows 8.0 instead of windows 8.1 pro)</p>
  
  <p>Any help would be appreciated</p>