Errors Creating App Package (UWP, Appx) - fatal error CMF1106: failed to open input PDB file for reading

Question

I'm getting errors when Creating App Packages for a UWP Win 10 application.

On my machine the error is:

C:\\Users\\Developer\\.nuget\\packages\\nodatime\\2.4.0\\lib\\netstandard2.0\\NodaTime.pdb : fatal error CMF1106: failed to open input PDB file for reading (PDB error code = 11)3 input PDB file is not generated by /DEBUG:fastlinkW must read and agree to the Data Collection Policy at MSPDBCMF : fatal error CMF1000: internal error

The pdb file exists in the mentioned directory: C:\\Users\\Developer\\.nuget\\packages\\nodatime\\2.4.0\\lib\\netstandard2.0

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On a hosted VSTS build the error message is even more cryptic:

C:\\Users\\VssAdministrator\\.nuget\\packages\\nodatime\\2.4.0\\lib\\netstandard2.0\\NodaTime.pdb : fatal error CMF1106: failed to open input PDB file for reading (PDB error code = 11)3 input PDB file is not generated by /DEBUG:fastlinkW must read and agree to the Data Collection Policy at ??? before using /errorreport:send1 warning treated as error; the PDB file is intact@ specified output filename is too long (exceeding 0 characters)

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Note 1 : On my machine the package is actaully successfully created but on the VSTS build the step fails as it detects the error in logs and stops.

Note 2 : I'm pretty sure this is not NodaTime specific. This is about something else...

My msbuild switches are:

• /p:AppxBundlePlatforms="$(BuildPlatform)"
• /p:AppxPackageDir="$(Build.ArtifactStagingDirectory)\\AppxPackages\\"
• /p:AppxBundle=Never
• /p:UapAppxPackageBuildMode=StoreUpload

I am now trying with extra /p:DebugSymbols=false /p:DebugType=None , but even if it fails, I would like to understand and eliminate the 'fastlink' errors.

Answer 1

Explicitly setting DebugType to pdbonly worked in my case, but not sure if you need portable debug symbols or not, so this might not be an option for you.

<PropertyGroup>
  <DebugType>pdbonly</DebugType>
</PropertyGroup>