Upgrade the .NET Agent from >= 3.9

Except for patches to the current version, you do not need to uninstall the old agent first when you upgrade from the .NET Agent >= 3.9.

  1. Stop w3wp processes for instrumented IIS applications. Stop instrumented Windows services or standalone applications.
  2. Download the MSI installer package from Splunk AppDynamics Downloads.
  3. Launch an elevated command prompt with full administrator privileges. Logging on to Windows as a member of the Administrators group does not grant sufficient permissions to run the installer. See Start a Command Prompt as an Administrator.
  4. If you use a single-tenant Controller account, in the Controller click Settings > License > Account to view your access key.
  5. Run a command-line agent install. For single-tenant Controller accounts, specify your account access key using the AD_CONTROLLER_ACCOUNT_ACCESS_KEY parameter. For example:
    msiexec /i "%USERPROFILE%\Downloads\dotNetAgentSetup.msi" /l log.txt /q AD_CONTROLLER_ACCOUNT_ACCESS_KEY=changeme

    The installation runs silently in the background.

    Note: If you forget to add the account access key for a single-tenant Controller account, you can run the Agent Configuration Utility or manually add it to the config.xml later. See

    Account Element

    .
  6. (Optional) Add the parameter INSTALLDIR=<path to installation directory> if you have changed the installation directory. For example: 
    msiexec /i "%USERPROFILE%\Downloads\dotNetAgentSetup.msi" /l log.txt /q AD_CONTROLLER_ACCOUNT_ACCESS_KEY=changeme INSTALLDIR=<path to installation directory>
  7. Restart IIS:
    • Launch the Splunk AppDynamics Agent Configuration utility and click Restart IIS on the Configuration Summary window.or
    • Execute iisreset from the command line.
    Restart Windows services and standalone applications.