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Home > Success Center > Network Configuration Manager (NCM) > Unable to cache diff results due to exception error

Unable to cache diff results due to exception error

Updated September 1, 2017


This article describes issues related to the following error:
Unable to cache diff results due to exception: System.IO.IOException: The file exists.



  • NCM 7.x


Most likely cause is that the folders for temporary files are full.



  1. Navigate to C:\Windows\Temp and remove unnecessary files. Some of them may be locked by other processes. Ignore these files.
  2. Navigate to C:\Users\
  3. For each user folder, navigate to AppData\Local\Temp and remove any unnecessary files.




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