UserErrorJreNotFound error message when you run a copy activity to Azure

This article provides a resolution for the problem that occurs when you try to copy content to Microsoft Azure by using a Java-based tool or program.

Original product version:   Data Factory
Original KB number:   4497239


When you try to copy content to Microsoft Azure by using a Java-based tool or program (for example, copying ORC or Parquet format files), you receive an error message that resembles the following:

ErrorCode=UserErrorJreNotFound,'Type=Microsoft.DataTransfer.Common.Shared.HybridDeliveryException,Message=Java Runtime Environment is not found. Go to to download and install on your Integration Runtime (Self-hosted) node machine. Note 64-bit Integration Runtime requires 64-bit JRE and 32-bit Integration Runtime requires 32-bit JRE.,Source=Microsoft.DataTransfer.Common,''Type=System.DllNotFoundException,Message=Unable to load DLL 'jvm.dll': The specified module could not be found. (Exception from HRESULT: 0x8007007E),Source=Microsoft.DataTransfer.Richfile.HiveOrcBridge


This issue occurs for either of the following reasons:

  • Java Runtime Environment (JRE) isn't installed correctly on your Integration Runtime server.

  • Your Integration Runtime server lacks the required dependency for JRE.

By default, Integration Runtime resolves the JRE path by using registry entries. Those entries should be automatically set during JRE installation.


Follow the steps in this section carefully. Serious problems might occur if you modify the registry incorrectly. Before you modify it, back up the registry for restoration in case problems occur.

To fix this issue, follow these steps to verify the status of the JRE installation:

  1. Make sure that Integration Runtime (Diahost.exe) and JRE are installed on the same platform. Check the following conditions:

    • 64-bit JRE for 64-bit ADF Integration Runtime should be installed in the folder: C:\Program Files\Java\


      The folder is not C:\Program Files (x86)\Java\

    • JRE 7 and JRE 8 are both compatible for this copy activity. JRE 6 and versions that are earlier than JRE 6 have not been validated for this use.

  2. Check the registry for the appropriate settings. To do this, follow these steps:

    1. In the Run menu, type Regedit, and then press Enter.

    2. In the navigation pane, locate the following subkey: HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Runtime Environment.

      In the Details pane, there should be a Current Version entry that shows the JRE version (for example, 1.8).

      Screenshot of the Java Runtime Environment version in the registry.

    3. In the navigation pane, locate a subkey that is an exact match for the version (for example 1.8) under the JRE folder. In the details pane, there should be a JavaHome entry. The value of this entry is the JRE installation path.

      Screenshot of the JavaHome entry in the details pane.

  3. Locate the bin\server folder in the following path:

    C:\Program Files\Java\jre1.8.0_74

    Screenshot shows the location of the bin folder.

  4. Check whether this folder contains a jvm.dll file. If it does not, check for the file in the bin\client folder.

    Screenshot to check the jvm.dll file in the bin folder.  


  • If any of these configurations are not as described in these steps, use the JRE windows installer to fix the problems.
  • If all the configurations in these steps are correct as described, there may be a VC++ runtime library missing in the system. You can fix this problem by installing the VC++ 2010 Redistributable Package.

Contact us for help

If you have questions or need help, create a support request, or ask Azure community support. You can also submit product feedback to Azure feedback community.