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Steve Jones is the editor of and visits a wide variety of data related topics in his daily editorial. Steve has spent years working as a DBA and general purpose Windows administrator, primarily working with SQL Server since it was ported from Sybase in 1990. You can follow Steve on Twitter at

Check the .NET Framework Version Installed

I haven’t ever worried about this, but I had the need recently to check. I was looking a SQL Sentry’s Plan Explorer and the instructions mentioned that you need the .NET Framework v4.0 installed.

So I decided to check my machine. First I hit Control Panel


However that doesn’t say .NET 4.0 install. Instead it has a “client profile” listed. What does that mean?

I wasn’t confident of this, so I Google’d for the question. I found this blog on How to Check. It lists a Javascript call that you can paste into IE or Firefox.


I get this from Firefox:


and this from IE:


Again, .NET4 is listed, but not with a CLR component. So I’m not sure what I have.

Then I went over to Stack Overflow to check. I would this answer, and it lists registry keys. I checked mine and I see this:


So do I have .NET 4.0 or not? At this point I’m still not since it’s hard to determine if I really have the CLR needed. So I decide to just install Plan Explorer and look for error messages.


Pow! Apparently the client profile isn’t enough. So I downloaded the .NET 4 Framework from the link at SQLSentry and then saw this:


.NET Framework extended, which matches the result from IE:


Now I can go play with SQL Sentry’s Plan Explorer. It certainly look cool!


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