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Home > Success Center > Kiwi CatTools > Kiwi Cat - Knowledgebase Articles > Internal Program Error, Error Number: 0

Internal Program Error, Error Number: 0

Updated April 12, 2018


This article details a resolution to the issue in which CatTools backups are failing with the following message:

Internal Program Error, Error Number: 0- Description:  - Module Name: ClientFields.frm - Procedure Name: ConnectHostSingleAttempt


  • Kiwi CatTools 3.8 and later


This can occur when the system files become corrupted due to Windows updates or anti-virus programs.


  1. Create a backup of the CatTools folder. 
    For steps on backing up CatTools, see Back up Kiwi CatTools files.
  2. Re-run the Kiwi CatTools installer while logged in as a local administrator.


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