Tableau Prep Fails to Install with Error Code 2739

Published: 14 Nov 2018
Last Modified Date: 07 May 2020


When installing Tableau Prep 2018.2, the following error may occur:

The installer has encountered an unexpected error installing this package. This may indicate a problem with this package. The error code is 2739.


  • Tableau Prep 2018.2.2
  • Windows


Option 1: Work with your IT team to ensure that antivirus software is not interfering with the installation

Option 2: Ensure that the jscript.dll library file is properly registered
  1. Open the Windows Start menu and type 'cmd'
  2. Right-click the Command Prompt application and select Run as Administrator
  3. Click Yes when Windows asks for permission
  4. Type the following into the command prompt
    cd "%systemroot%\SysWow64"
    regsvr32 jscript.dll
    You should see a prompt like this if successful.
  5. Run Registry Editor (regedit.exe).
    Verify whether the below key exists. If so, delete it.
    Note: Do not delete the key HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{f414c260-6ac0-11cf-b6d1-00aa00bbbb58}
  6. Note: Verify the user who runs the command has "Read and execute" permission on file C:\Windows\SysWOW64\jscript.dll to prevent "Access is denied" error. 


The error code 2739 indicates that a JavaScript function necessary for the installation was not able to run. This may be due to antivirus blocking the script or the JavaScript library not being properly registered in Windows.
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