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Unfortunately I have to continue to use it to support a Windows Mobile codebase.

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I'm curious about the reasons for the down-votes here.. – Jon Malcolm Mar 8 at 9:00
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I would guess the down-votes are because the OP hasn't shown any indication of what research if any they've done on it for themselves. – Eoin Carroll Mar 8 at 9:12
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@MattDavey yep, it's to be expected. I think it's pretty poor imho, the downvoting here would have to be worse than any other SE site. – Sam Mar 8 at 9:54
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I didn't downvote myself, but to be honest, isn't this something 10 seconds of googling could tell you? – Ozz Mar 8 at 10:16
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Googling didn't give me any definitive answers. A shame that a good resource like P.SE has devolved into this kind of group think. – brushleaf Mar 8 at 15:30
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closed as not a real question by Jim G., Martijn Pieters, Martin Wickman, MichaelT, Glenn Nelson Mar 8 at 12:40

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, see the FAQ.

5 Answers

You can install and run Visual Studio 2008 and 2012 side by side. If you want you can also additionally install 2010 to have a nice row.

However, you can not use 2008 projects in 2012 and vice versa. This only works with 2010 SP1 and 2012 (with sometimes minor adjustments).

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I have had two different versions of Visual Studio installed before with no issues. Not those two specifically though. I think it was 2008 and 2010.

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Yes, it most certainly can without any issues whatsoever.

Also, why didn't you try this for yourself before asking us? It would be literally free to do so. Just simply download the Express versions of 2008 and 2012, run them both at the same time, and voila - You have your answer.

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First of all, it's 2008 and 2012, not 2010 and 2012. Second of all, installing them as an experiment may be "free" to try (we have MSDN), but it could also damage my Windows installation. I could try it on a VM, but I am not sure that wouldn't discount damage on a more complicated install. I really don't think a down vote on this question is merited. – brushleaf Mar 8 at 7:53
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@brushleaf: I have VS 2008, 2010, and 2012 all running on my workstation because (probably like you) I need to support Windows Phone 6.5. – Jim G. Mar 8 at 8:02
I too have 2008, 2010 and 2012 all on my machine without issue. – NDJ Mar 8 at 8:07
@brushleaf - if that happens, you should always be able quickly restore from your recovery image. You should have one anyway because development PC installations take a looooonnggggg time, and accidents do happen. – MadKeithV Mar 8 at 9:00

On my work machine I currently have Visual Studio 2005, 2008, 2010 and 2012 installed side by side*

* I did not install them all myself, the IT support guys figured I would need all of them when they set up my machine...

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Well, your question to me is a valid question. Whereas I don't know why people are marking your question with negative.

BTW, the key-point here is that you can install all the versions of Visual Studio from the older version to newer versions. e.g. After a fresh installation of Windows O.S., you can install Visual Studio 2005, then Visual Studio 2008, then Visual Studio 2010 and then Visual Studio 2012. But if you want to install an older version of Visual Studio with newer version of Visual Studio already installed (e.g. Visual Studio 2010 installed and trying to install Visual Studio 2008), then Visual Studio Installation would do problems and in some cases would not allow you to install it.

So conclusion is that: Visual Studio installation from older versions to newer versions possible, but not reverse of it.

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