Couldn't process file due to Internet or Restricted zone or mark of the web
Depending on the way the SDK is downloaded you may see an error message similar to the following when building a sample application:
Couldn't process file C:\projects\CDL-Windows-1.0.1\Samples\WillDevicesSampleApp\References\x64\Wacom.InkCanvas.UWP.dll due to its being in the Internet or Restricted zone or having the mark of the web on the file. Remove the mark of the web if you want to process these files.
This can result from unzipping a file which was security blocked by Windows when it was downloaded from the Internet. This will be indicated in file properties, for example:
To resolve the issue Unblock the file in the Properties dialog before unzipping its contents. Otherwise the built-in Windows zip utility will retain the property in the output files.
Alternatively, use 7-Zip to unzip the files then the blocked property will not be retained.
Further details are discussed here: