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Thursday, August 27, 2009

Revit network license troubleshooting #Tech Tip

Published date: 2009-Aug-27
ID: TS13744786

Applies to:
Autodesk® Revit® Architecture 2010
Revit® Architecture 2009
Revit® Architecture 2008
Autodesk® Revit® MEP 2010
Revit® MEP 2009
Revit® MEP 2008
Autodesk® Revit® Structure 2010
Revit® Structure 2009
Revit® Structure 2008


When launching Revit you are unable to obtain a network license on a specific workstation but other workstations can obtain a license.


The following process should help isolate or resolve this behavior:

  1. Verify the license server can be pinged from the workstation.
    Diagnostic test for client computer experiencing network licensing errors

  2. Create or verify the workstation ADSKFLEX_LICENSE_FILE environment variable.
    Specifying license servers using the ADSKFLEX_LICENSE_FILE environment variable

  3. Delete the Revit licpath.lic file.
    • File is located > C:\Program Files\Revit Product\Program\Licpath.lic. For 32-Bit versions of Revit running on a 64-Bit operating system the file will be located > C:\Program Files (x86)\Revit Product\Program\Licpath.lic.
    • Substitute Revit Product with the specific Revit folder name. This file can be restored from the Recycle Bin after testing if needed.

  4. Export and then clear out the ADSKFLEX_LICENSE_FILE registry key.
    • Close all applications.
    • Open the Registry Editor > Windows Start > Run > Regedit.
    • Locate the following key > HKEY_LOCAL_MACHINE\SOFTWARE\FLEXlm License Manager\.
    • Delete the ADSKFLEX_LICENSE_FILE key.
    • Close the Registry Editor.

    Warning! Use the Microsoft® Registry Editor only at your own risk and only after backing up the registry as well as the system.dat and user.dat files as outlined for your operating system in the Microsoft Knowledge Base and in the related solution, TS66513. Additional information about the registry is also contained in the Help topics in the Microsoft Registry Editor.

    After the steps above are complete restart the workstation and launch Revit. If the workstation cannot obtain a license move onto the steps below:

  5. Delete the AdskNetSrv.dat file.
    • Close all applications.
    • Locate the AdskNetSrv.dat file on Windows XP > C:\Documents and Settings\All Users\Application Data\Autodesk\NetService\AdskNetSrv.dat. For Windows Vista the file is located > C:\ProgramData\Autodesk\NetService\AdskNetSrv.dat.
    • Make a copy of this file for backup purposes.
    • Delete the AdskNetSrv.dat file.

  6. Create an environmental variable for FLEXLM_TIMEOUT.
    Error: A valid license could not be obtained by the network license manager

    Restart the workstation and launch Revit. If the workstation still cannot obtain a license please collect the following files and log a support request through Subscription Center or contact your reseller:

    • 3 latest Revit journal files from workstation: Location of journal files
    • Debug.log file from license server: Locate debug.log file for license server
    • License server status enquiry: LMTOOLS > Server Status tab > Perform Status Enquiry
    • Copy of license file.


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