Error running script. Com class retreival.

[Putger]

New-Object : Retrieving the COM class factory for component with CLSID {00000000-0000-0000-0000-000000000000} failed due to the following error: 80040154 Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)). At F:\Downloads\ConvertOneNote2MarkDown-master\ConvertOneNote2MarkDown.ps1:47 char:14

• $OneNote = New-Object -ComObject OneNote.Application

• 
  + CategoryInfo          : ResourceUnavailable: (:) [New-Object], COMException
  + FullyQualifiedErrorId : NoCOMClassIdentified,Microsoft.PowerShell.Commands.NewObjectCommand

Unable to find type [Microsoft.Office.InterOp.OneNote.HierarchyScope]. At F:\Downloads\ConvertOneNote2MarkDown-master\ConvertOneNote2MarkDown.ps1:50 char:29

• ... erarchy("", [Microsoft.Office.InterOp.OneNote.HierarchyScope]::hsPage ...

• 
  + CategoryInfo          : InvalidOperation: (Microsoft.Offic....HierarchyScope:TypeName) [], RuntimeException
  + FullyQualifiedErrorId : TypeNotFound

Exception calling "ReleaseComObject" with "1" argument(s): "Object reference not set to an instance of an object." At F:\Downloads\ConvertOneNote2MarkDown-master\ConvertOneNote2MarkDown.ps1:248 char:3

• [System.Runtime.Interopservices.Marshal]::ReleaseComObject($OneNote ...

• 
  + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
  + FullyQualifiedErrorId : NullReferenceException

Remove-Variable : Cannot find a variable with the name 'OneNote'. At F:\Downloads\ConvertOneNote2MarkDown-master\ConvertOneNote2MarkDown.ps1:249 char:3

• Remove-Variable OneNote

• 
  + CategoryInfo          : ObjectNotFound: (OneNote:String) [Remove-Variable], ItemNotFoundException
  + FullyQualifiedErrorId : VariableNotFound,Microsoft.PowerShell.Commands.RemoveVariableCommand

[grumpymaker]

I ran into this and a few other gotchas. What helped for me:

• Make sure that OneNote is installed, or the Com automation server won't be able to load it.
• OneNote MUST be Open and running.
• Make sure that OneNote and powershell are running in the same security context (e.g. run PowerShell as regular user, not as an administrator if OneNote is not running as an administrator)
• Make sure that you are using the correct PowerShell architecture as OneNote (e.g. x64 if OneNote x64 is running). For me, using just "PowerShell" and not "PowerShell x64" or "PowerShell x86" and not opening as an administrator did the trick.

[gonzofy]

@grumpymaker Thanks for the explanation. I hit the same bug, and it was because I was running the script in an admin terminal vs. a user terminal. Might be worth updating the docs on the homepage?