MMV Offline requires ASP.NET 4.5.2 or higher on the vessel's dedicated server. Most newer servers already have ASP.NET 4.5 or above installed, but older servers may not.
The AVIT or IT technician responsible for the vessel should verify the server's ASP.NET version before install.
How to check the installed version (Registry Editor)
- From the Start menu, choose Run, enter regedit, and select OK. (You need administrator credentials to run regedit.)
- In the Registry Editor, open the following subkey:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full
If the Full subkey isn't present, .NET Framework 4.5 or later is not installed. - Check for a REG_DWORD entry named Release. If it exists, .NET Framework 4.5 or later is installed. Its value maps to a specific version:
In this example, the Release value is 528040, which is the release key for .NET Framework 4.8.
Release key mapping
| .NET Framework version | Minimum Release value |
|---|---|
| .NET Framework 4.5 | 378389 |
| .NET Framework 4.5.1 | 378675 |
| .NET Framework 4.5.2 | 379893 |
| .NET Framework 4.6 | 393295 |
| .NET Framework 4.6.1 | 394254 |
| .NET Framework 4.6.2 | 394802 |
| .NET Framework 4.7 | 460798 |
| .NET Framework 4.7.1 | 461308 |
| .NET Framework 4.7.2 | 461808 |
| .NET Framework 4.8 | 528040 |
Any Release value ≥ 379893 (ASP.NET 4.5.2) meets the MMV Offline requirement.
Common questions
Our server has .NET Framework 4.5 but not 4.5.2 — is that enough?
No. MMV Offline requires 4.5.2 minimum. Update .NET Framework to 4.5.2 or higher before install.
Where do we download .NET Framework if we need to upgrade?
From Microsoft's official .NET download page (dotnet.microsoft.com). Choose the runtime installer for your Windows version.