Net Framework 4.7.2 Installs successfully but doesn't?

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Castleland-6092 asked Mar 10, '21 Castleland-6092 answered Mar 24, '21

Net Framework 4.7.2 Installs successfully but doesn't?

Hi there,
I'm having a bit of an issue with NF 4.7.2 not giving me any indication of failing but then not actually appearing on our server at all.

I've tried using:

Offline Installer
Web installer
Deploying Desktop Central 10 package

All of which give the "Net framework 4.7.2 has been successfully installed, please reboot your computer" etc... message.

On a reboot however, Net Framework is still showing as 4.7.1 in the registry, powershell and the accompanying update 4054542 is not shown as installed.

I'm stuck here and would appreciate anyone's help in finding out what's going on with this and potentially how to solve it.

I want to get our exchange updated to CU23 (I know it's been a while) but need to get this installed first.

Windows Server 2012 (not R2)

Thanks in advance.

windows-server windows-server-2012 dotnet-runtime vs-setup

netfnoinstalled.png (184.8 KiB)

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Answer 1 · 2021-03-11T07:50:34.607Z

KarlieWeng-MSFT answered Mar 11, '21 KarlieWeng-MSFT edited Mar 18, '21

Hello @Castleland-6092

Please try to use “Microsoft .NET Framework Repair Tool” to repair any possible issues for the setup of .NET Framework, and then try to download and install the .NET Framework again, as some shared files or registry keys may have been deleted during the cleanup of .NET Framework.

Best Regards
Karlie

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Castleland-6092 · Mar 15, 2021 at 10:20 AM

Thank you for your response Karlie, that's an excellent idea.

I'm currently furloughed from work so access to the office is limited, but I will definitely check this on Wednesday and get back to you on its success.

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Castleland-6092 · Mar 17, 2021 at 01:04 PM

Unfortunately Karlie the repair tool didn't solve the issue.

It first stopped and reregistered the Windows installer tool, so I retried - Installed successfully message but again no updated registry entry
Then is suggested repairing 4.7.1 which I did. Rebooted. Retried installation - same as above.
Then it said it couldn't diagnose any other issues and uploaded the logs to MS.

Looking through the fixdotnet log you can see where it successfully completes these two tasks so I'm thinking there's another issue at play here.

Still hoping for suggestions

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Answer 2 · 2021-03-18T01:24:31.27Z

cheong00 answered Mar 18, '21 Castleland-6092 commented Mar 22, '21

Check and see if the following keys exists:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft.NETFramework\v4.0.30319\SKUs.NETFramework,Version=v4.7.2
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft.NETFramework\v4.0.30319\SKUs.NETFramework,Version=v4.7.2

If yes, then v4.7.2 is likely to be installed.

Now to verify the file is okay, check your %windir%\Microsoft.NET\Framework64\v4.0.30319 folder and right-click the mscorlib.dll there. If the version is > 4.7. then it's okay. (for .NET v4+, it will replace DLLs with lower version number with greater versions. Since you don't have v4.8 installed, core libraries like mscorlib.dll should show 4.7.3324.0 when viewed)

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Castleland-6092 · Mar 22, 2021 at 11:23 AM

Thanks for the suggestion cheong00, I will try this on Wednesday the next time I'm in the office. Appreciate it.

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Answer 3 · 2021-03-24T11:30:32.097Z

Castleland-6092 answered Mar 24, '21

Hi again Cheong00

Unfortunately those keys are missing. v4.7.1 is the latest version showing. Same for the mscorlib.dll

So even though it's saying "installed successfully" and there are no error logs - it's not actually installing at all.

:(

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