• Before you begin, review the Release Notes.
• Splunk AppDynamics requires an account access key for agent connections to single-tenant Controller accounts. Splunk AppDynamics <= 4.1 only required an account access key for multi-tenant Controller accounts. If you have a single-tenant Controller, you can locate the account access key in the Controller under Settings > License > Account. You must be a member of a role with the View License account level permission, see Manage Custom Roles for Splunk AppDynamics.

The .NET Agent only supports in-place upgrade for these versions:

• • >= 3.9

Major and minor releases after the currently installed version. For patch releases, you must uninstall the existing agent before upgrading.

For example, to install the patch release 4.1.0.1 over 4.1.0.0, uninstall the existing agent before upgrading.