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dot Net (.NET) 

Open Dental requires both Microsoft .NET 3.5 and any version of Microsoft .NET 4 (4.0, 4.5, 4.6, etc.). If you run Windows Updates regularly, your computers should already have the required files installed.  Newer versions of Windows come with .NET installed.

Version notes:

  • 4.0 does not include 3.5. Both are required and will run side by side.
  • 4.5 replaces version 4.0, and similarly 4.5.1, 4.5.2, 4.6, 4.6.1, and 4.6.2 replace .NET 4.5. This means they use the same runtime version, but the assembly versions are updated and include new types and members. After you install one of these updates, Open Dental should continue to run and 4.0 does not need to be reinstalled. However, 3.5 is still needed and you may need to manually turn it on in the Control Panel (Programs and Features, Turn Windows features on or off, check .NET 3.5). https://msdn.microsoft.com/en-us/library/bb822049(v=vs.110).aspx
  • 3.5 includes 2.0.

If required .NET files are not installed, run the links below. If you have been using Open Dental successfully, and are now updating to Version 11.1 or later, then just run the second link for 4.0. (Select "Run" when given a choice).

Repair Tool: Sometimes the installation must be repaired.  See http://www.microsoft.com/en-us/download/details.aspx?id=30135 to download the Microsoft .NET Framework Repair Tool.


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