SQL Server 2012 installation exception: error while enabling windows feature: netfx3, error code: – 2146498298

1. Installation environment
OS: Windows 2012 R2
SQL: SQL Server 2012
2. Fault description

3. Troubleshooting
It was found that the problem was due to the.net Framework 3.5 not being installed. .net 4.0 is out now, need to install.net 3.5?Sweat, it should be compatible! Here is the installation process.

Select the next step in the selection of the server to be installed, as shown below

Select the next step, go to the function module, and check the.NET Framework 3.5. Here you must select the alternate source path and specify the location of the installation file, as shown in the figure below.

The installation is complete

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