Solved .Net Framework problem. Can't update or install

[larryfoster]

Thanks for your help in advance.

I had .Net 4.5.1 on my computer installed June 2014.

Since then, I have been unable to update .Net.

I have Windows 7 SP2.

I needed to get (at least)4.5.2 for software I wanted to install.

I have tried Windows update, the web installer, the offline installer, the net framework fix and, finally, uninstalled the version on my computer.

As a last resort, I disabled Windows Security Essentials and tried one last time.

Although not recommended here, I ran ccleaner and fixed registry issues.

Currently, I have no version of .Net on my computer

I have lots of room on my hard drive; 600+ Gb.

I am appreciative of any solutions you may be able to offer.

Once again, thanks

 

[larryfoster]

I do have an error log if I should post it.

 

[Ranger4]

Does this MS website provide any help for you. Also refer to the menu or the LH side of the web page for further help.

Install the .NET Framework on Windows 7 SP1 | Microsoft Docs

 

[larryfoster]

Thanks for your reply, Ranger4.

I have tried this a few times but unable to get an install.
Always a fatal error.

I'll attach a log from last night's last attempt.

I'm not real smart about this stuff but it looks like I'm missing some stuff.

 

[cornemuse]

3rd one down:

download ".net framework at DuckDuckGo

This is 4.7.1. Help? (off-line installer)

I had trouble installing (an earlier version of) .net framework, would get to about 90% & quit. (was installing PaintDotNet, installing included on-line install of .netframework.)

 

[iko22]

The fix of this issue is to rename c:\program data\microsoft\crypto\RSA\S-1-5-18 and try re-installation of .net again.

source: error 997 overlapped io operation 0x80070643 fatal | microsoft answers

 

[larryfoster]

Thanks cornemuse and iko22.

Cornemuse, I've tried the offline installers without success.

iko22, read the thread you sent me to.

One of the posters suggested that renaming the file may cause other problems.
He suggested

Just right click Properties and add a folder permission to it for "SYSTEM" and grant it "Full Control"

Do you think he is correct?

 

[iko22]

Yes, the commenter just below suggested that he had problems.

But I think his matter is common sense. Just don't run other installers at the same time as making the rename!

Other commenters after that one still maintain the fix I quoted works, plus an alternative fix is to assign all permissions to SYSTEM. It is up to you which fix you try first. Just take care when making such changes.

 

[larryfoster]

Thanks.
Sometimes, this stuff makes me nervous

 

[iko22]

It is good to be cautious. Think of it this way; if you re-name it, you can always go back to the original name, should something untoward happen that you are not completely happy with.

 

[larryfoster]

Does it matter what I name it?
For example, c:\program data\microsoft\crypto\RSA\S-1-5-18A

 

[larryfoster]

Renaming the file made no difference.
Attaching new error log from 5 minutes ago

 

[larryfoster]

I went to put it back to the original and the download created a new file

 

[iko22]

Same fatal error message. What version of the framework do you currently have installed on the computer? Go to Programs and Features and see what version is installed. Try repairing the current .NET installation from Programs and Features.

 

[larryfoster]

I have none installed now.
I had 4.5.1 but deleted it based on a Microsoft answers suggestion before I came here
Windows 7 - Windows update error 80070643 - Microsoft Community

 

[larryfoster]

Before I deleted it, I had tried repairing it several times.
I looked in my Recycle Bin and that was cleaned out so I can't restore it

 

[iko22]

There should be at least v3.0 and v3.5 installed on the computer.

Open regedit, if you are feeling confident, and see what nodes/folders are listed under

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP

You can also run DSIM /Online /Cleanup-Image from an elevated command prompt. Check the output for any erros fixed or unfixed.

 

[larryfoster]

Here you go

 

[iko22]

Okay!!! So at the moment you cannot run any programs that use .NET later than v3.5.

Now try the DISM /Online /Cleanup_image from an elevated command prompt, as I suggested.

 

[larryfoster]

Thank you.
Where is the DISM/...?

How do I do that?