In that case, scan with Windows Defender or Malwarebytes.

Handling the "heartbeat" signal to ensure the connection remains active. System Requirements for the License Manager

For AutoCAD 2023 to work with a network license, the server must be running a compatible version of the NLM. Autodesk specifies that Network License Manager version 11.18 or higher is required for compatibility with the Desktop Licensing Service version 12.2, which is used by AutoCAD 2023. If your organization is using an older license manager, users of AutoCAD 2023 will receive critical errors such as "Network License Not Available" or "Error [0.0.0]," indicating incompatible versions. Therefore, a genuine administrator might handle files named adsknlm while updating the server to the latest NLM to resolve these issues.

Many copies distributed on online forums contain hidden payloads, such as cryptocurrency miners, info-stealers, or ransomware.

Adsknlm.exe is a core component of the Autodesk Network License Manager (NLM)