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:
https://www.catalog.update.microsoft.com/Search.aspx?q=KB976932

Or, you may download from the link as below
For OS 32bit:
 https://drive.google.com/drive/folders/1_rssDaVAE-5_1phD8LKICLWKifKf1UFk?usp=sharing

For OS 64bit:
 https://drive.google.com/drive/folders/158kMmlv0UeTU4gqgU0fHw0x7q7mqsUML?usp=sharing

For Window Server 2008 R2: https://drive.google.com/drive/folders/1Riuu7N95vPchiHwD2R3PDclkXfX9k_E0?usp=sharing