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How to find out what versions of .NET Framework you have installed

On Saturday, September 16th 2006 at 12:09 AM
By Andrew Pociu (View Profile)
*****   (Rated 4.7 with 13 votes)
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To find out what versions of .NET Framework you have installed on your computer, go to C:\Windows\Microsoft.NET and among the files you will see a few folders. If you have folders of the form v1.0.xxxx in there, you have .NET Framework 1.0 installed, if you have folders of the form v1.1.xxxx, then you have .NET Framework 1.1 installed, and finally if you have folders of the form v2.0.xxxx then .NET Framework 2.0 installed. Obviously, since you can have more than one version of .NET Framework on your computer, you can also have multiple folders of the form vx.x.xxxx.

If you were expecting a solution for retrieving the available versions programatically in your Windows application, you can either check for the availability of the folders, or for the appropriate registry values. However, if you are using the .NET Framework itself for the application in which you wish to retrieve the versions running on the targeted computer, you should use the method specifically designed for this purpose, which is covered in the following article:
How to retrieve the installed ASP.NET version
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Comment Current Comments
by c.Elayaraja on Monday, February 26th 2007 at 10:01 AM

super

by gorski on Saturday, September 6th 2008 at 02:05 PM

helped a lot thanks a bunch

by Adem on Friday, February 20th 2009 at 04:16 AM

ty guys, very helpful

by krishna on Wednesday, May 6th 2009 at 05:55 AM

Hi, this is a simple and cute tip...thanks

by M on Wednesday, June 23rd 2010 at 09:10 AM

thank you so much, I am interested to fetch this info using .net API ( no reading from registry ).


Thanks

by Andy.Mac on Monday, September 13th 2010 at 11:23 AM

On Windows 7 these folders seem to be in:
C:\Windows\Microsoft.NET\Framework

by Rob Miller on Wednesday, September 15th 2010 at 01:20 AM

I liked your site .

by JW on Wednesday, March 16th 2011 at 01:40 PM

I had a virus and it killed the .Net/Framework and this program made it simply to locate and download all versions of .NET Thank God for great Programmers.

by James Mccormack on Tuesday, May 10th 2011 at 04:16 PM

I found this useful:

In Windows Internet Explorer copy
javascript:alert(navigator.userAgent)
to your address bar
and it will return the version(s)
For example V1, v2, V3.5

Or folder C:\WINDOWS\Microsoft.NET\Framework
you will see files with the version(s)
V1, v2, V3.5 etc.

by Kamil on Tuesday, January 17th 2012 at 01:07 AM

Once you have recreated the problem and captured these steps, you can save them to a file and send it to your support person, who can then open it up and view

by Larry on Thursday, February 16th 2012 at 09:12 AM

If you are only interested in determining the latest .net installed, you can just simply open the control panel and look at add/remove programs and view all installed levels there.

by home page on Saturday, October 13th 2012 at 06:12 AM

I had a virus and it killed the .Net/Framework and this program made it simply to locate and download all versions of .NET Thank God for great Programmers.


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