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Windows 7: Microsoft .Net Framework 4 Fatal Error During Installation 0x80070643

02 Dec 2011   #1

Windows 7 Home Premium 64bit
 
 
Microsoft .Net Framework 4 Fatal Error During Installation 0x80070643

Hi guys, I've had this problem for a little while now, but I now have a pressing need to use a program requiring .NET 4 Framework, and I just can't install it. Every time I do I get the message "Fatal Error During Installation". I've tried pretty much everything and searched countless forums for a solution, but with no joy
Help greatly appreciated
Here's my log:
Microsoft .Net Framework 4 Fatal Error During Installation 0x80070643-installation-log.png




My System SpecsSystem Spec
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02 Dec 2011   #2

Windows 7 Professional SP1 32-bit
 
 

Hi Laxeyman, welcome to SevenForums!

From the looks of it, you're using a web installer (a small program which downloads more files to install once you run it). Is this correct?

You might try downloading the offline (complete) setup file instead. You can get it directly from here.

Try running this download and let us know if it works. If you still run into the same error, we'll go from there and find another solution.
My System SpecsSystem Spec
02 Dec 2011   #3

Windows 7 Home Premium 64bit
 
 

Hi Corazon, I tried that and it didn't work unfortunately. I still get the same message.
Here is the log of that attempt, if you need it:
Microsoft .Net Framework 4 Fatal Error During Installation 0x80070643-install-failure.png


My System SpecsSystem Spec
.


02 Dec 2011   #4
JMH

Win 7 Ultimate 64-bit. SP1.
 
 

Troubleshooting .NET Framework 4 Install failures
Error Code: 0x80070643

Please refer these three links to see if they offer you some help..

Troubleshooting .NET Framework 4 Install failures - VarunGupta - Site Home - MSDN Blogs

Windows Update error 80070643

You receive
My System SpecsSystem Spec
03 Dec 2011   #5

Windows 7 Home Premium 64bit
 
 

Hi JMH,
1st option: The MSI have the right names in regedit, so that's not the problem.
2nd + 3rd option: There is no Microsoft Framework 4 program in my control panel, so I can't try and repair it. I don't know why its not there, seeing as I've tried to install it loads of times.
My System SpecsSystem Spec
03 Dec 2011   #6
JMH

Win 7 Ultimate 64-bit. SP1.
 
 

My System SpecsSystem Spec
04 Dec 2011   #7

Windows 7 Home Premium 64bit
 
 

Nah, none of those worked either
How do you contact Microsoft Technical Support?
My System SpecsSystem Spec
04 Dec 2011   #8
JMH

Win 7 Ultimate 64-bit. SP1.
 
 

Quote   Quote: Originally Posted by Laxeyman View Post
Nah, none of those worked either
How do you contact Microsoft Technical Support?
Try this.
Good luck!
Let us know how you go please.

Select your region
My System SpecsSystem Spec
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 Microsoft .Net Framework 4 Fatal Error During Installation 0x80070643




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