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Editorial Team
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Asked: 2026-05-12T07:56:45+00:00

Error 58 The SubsetFontsWpf task failed unexpectedly. System.IO.FileNotFoundException: Could not find file ‘Fonts\segoeui.ttf’. File

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Error   58  The "SubsetFontsWpf" task failed unexpectedly.
System.IO.FileNotFoundException: Could not find file 'Fonts\segoeui.ttf'.
File name: 'Fonts\segoeui.ttf'
  at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
  at System.IO.File.InternalCopy(String sourceFileName, String destFileName, 
  Boolean overwrite)
  at Microsoft.Expression.SubsetFontTask.SubsetFontsWpf.WriteFontFiles()
  at Microsoft.Expression.SubsetFontTask.SubsetFonts.Execute()
  at Microsoft.Build.BuildEngine.TaskEngine.ExecuteInstantiatedTask(EngineProxy 
 engineProxy, ItemBucket bucket, TaskExecutionMode howToExecuteTask, ITask task,
 Boolean& taskResult)

How can I fix this?

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1 Answer

  1. Editorial Team

    From the error message, basically, it looks like you miss a font file.

    Two solutions:

    • You can try to find the missing file on internet, and put it in the correct folder (I’m guessing Visual Studio has a folder for this, and if not, add it to the Windows fonts). I wouldn’t really recommend that, though, as it would probably mean some illegal download (fonts are not simple free objects)

    • It’s not normal that you miss a file which looks to be “original” from Visual Studio, so if this file misses, maybe others do too, and in this case you should reinstall Visual Studio

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