You must have Windows Server 2008 R2 SP1 installed. The base version without SP1 is not compatible with .NET 4.8. Memory: At least 512MB RAM (2GB or more recommended).
Right-click the downloaded .exe file and select Run as administrator . Accept Terms: Read and accept the license terms to proceed. download .net framework for windows server 2008 r2 64 bit
The installer will extract files and verify your system compatibility. You must have Windows Server 2008 R2 SP1 installed
Up to 4.5 GB of available space for the 64-bit installation. 3. Installation Steps for .NET 4.8 Right-click the downloaded
A system reboot is typically required to finalize the installation. 4. Enabling Built-in .NET Framework 3.5.1
Please note that Windows Server 2008 R2 reached its end of support on January 14, 2020, and security updates for .NET 4.8 on this platform are now limited to customers with Extended Security Updates (ESU) .