While install .Net Framework version 4.7.2/4.8, may occurs below errors.
this is due to Start from version 4.7.2 or above, some of the Operating System may not support.
Example: Windows 7
If you are Windows 7 User, may follow below solution to Update your operating system to Windows 7 (SP1)
Please refer to this Link:
Or, you may download from the link as below
For OS 32bit:
For Window Server 2008 R2: https://drive.google.com/drive/folders/1Riuu7N95vPchiHwD2R3PDclkXfX9k_E0?usp=sharing