Can't install .net framework 4.8

May 1

I can't install .net framework 4.8

OS: Windows Server 2016

regedit path:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full
Release = 461814 (10x) = 70bf6 (16x)

But path: "Microsoft.NET\Framework64\v4.0.30319"
exists 1028 and 1033

Lex Li (Microsoft) 4,662 Reputation points Microsoft Employee

2021-09-08T13:50:27.467+00:00

If you saw an error dialog like this when installing .NET Framework 4.8, click "log file" link and let it show you the complete installer log. From there you might see what actual errors and then use a search engine to study what might be the solutions.
May 1 Reputation point

2021-09-09T02:52:27.957+00:00
I guess I haven't administrator permissions...

There are the following statements in the log.

Parameter error

The system has installed .Net Framework 4.8 or above

Unable to uninstall .Net Framework 4.8

thank you for your help.
I'll try install with administrator permissions again first.
May 1 Reputation point

2021-09-09T03:17:23.513+00:00

Administrator authority: the same installation result.
Xingyu Zhao-MSFT 5,356 Reputation points

2021-09-13T01:38:03.79+00:00

Hi @May ,
Since your question is related to Windows Server, you can also consider posting your question here.
Thank you for your understanding.