Microsoft .NET Framework 4.5.1 - Final Released

The .NET Framework 4.5.1 RTM has been released and is available for download

The Microsoft .NET Framework 4.5.1 is a highly compatible, in-place update to the Microsoft .NET Framework 4 and the Microsoft .NET Framework 4.5. This version of the .NET Framework runs side-by-side with the .NET Framework 3.5 SP1 and earlier versions, but performs an in-place update for the .NET Framework 4 and the .NET Framework 4.5. The web installer is a small package that automatically determines and downloads only the components applicable for a particular platform.

Supported Operating Systems:

Windows 7 Service Pack 1, Windows 8, Windows Server 2008 R2 SP1, Windows Server 2008 Service Pack 2, Windows Server 2012, Windows Vista Service Pack 2

Download: .NET Framework 4.5.1 | 997 KB (Freeware)
View: .NET Framework Website | Release Notes | Blog Announcement

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14 Comments

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Pardon my ignorance, but time hasn't helped my understanding of the .Net Framework continuum: does this 4.5.1 expect 4.5 or can it be installed on a ver. 4 basis (that is overlap ver. 4.5) ?
Merci (merci not mercy!) beaucoup

Man! That ain't no lie!!

I'm not touching this crap with a 10 foot pole!!

Have ALWAYS despised this stupid .Net thing. As far as I know, I've never had a use for it.

Was never installed on any XP machine I've touched and sure wish I could get rid of it on Windows 7! Just doing the updates to .Net makes me want to kick the s**t out of the computer for taking so long!

I wonder if Windows RT will be getting this update too... obviously the downloads are for Intel systems, but "what's new" mentions that a subset of the API can be targeted by "store apps", so it would lead me to believe that for such an application to be both Intel and ARM compatible (as most store apps are), Windows RT would need this update as well...

littlecx said,
win 8.1 not supported? or already pre-installed?

It is supported because I got it to install but Microsoft does not listed as supported or not supported

Did they finally bother implementing garbage collection on the large objects heap? I'm tired of having to split every large piece of data in ~80kb blocks to prevent out of memory errors on 32bit systems. Even Java handles memory better, JAVA!!

francescob said,
Did they finally bother implementing garbage collection on the large objects heap? I'm tired of having to split every large piece of data in ~80kb blocks to prevent out of memory errors on 32bit systems. Even Java handles memory better, JAVA!!

I think Yes...
"Ability to explicitly compact the large object heap (LOH) during garbage collection."

francescob said,
Did they finally bother implementing garbage collection on the large objects heap? I'm tired of having to split every large piece of data in ~80kb blocks to prevent out of memory errors on 32bit systems. Even Java handles memory better, JAVA!!
You have people who care about coding efficiently (so much so that their programs would run fine on a 100MHz Pentium) and those who take advantage of modern system resources. From what I hear, Java has become pretty good in terms of efficiency. .NET? I try to stay away from that. The last time I wrote a basic app, it ended up using 20MB of RAM. Compiling through another IDE reduced RAM usage by 75%!