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Troubleshooting the licensing error: "Missing activation. NEO session file not found"
Who is this article for?
Users who want to resolve the licensing error message below.
No elevated permissions are required.
This article explains how to fix the Missing Activation error message in your mail manager, usually after switching to a new computer.
1. Issue
When moving your Mail Manager license to a new computer, the license file may detect the change and mistakenly think you're violating the license terms.
Example error message:
Missing Activation. NEO session file not found
SAM: no activation found
2. Resolution
- Navigate to: %localappdata%\Mail Manager\Program Files\
- Run KeyManager.exe
- Select “Deactivate” in the popup, then close it.
- Close Outlook.
- Uninstall Mail Manager via Windows add/remove programs.
- Reinstall Mail Manager using your usual method, preferably your company’s custom installer.
Note: If using an outdated version of Mail Manager, you can access the Key Manger in the Help menu.