Visual Studio 64 bit? – Dev

The best answers to the question “Visual Studio 64 bit?” in the category Dev.


Is there any 64 bit Visual Studio at all? Why not?


No! There is no 64-bit version of Visual Studio.

How to know it is not 64-bit:
Once you download Visual Studio and click the install button, you will see that the initialization folder it selects automatically is C:\Program Files (x86)\Microsoft Visual Studio 14.0

As per my understanding, all 64-bit programs/applications goes to C:\Program Files and all 32-bit applications goes to C:\Program Files (x86) from Windows 7 onwards.


For numerous reasons, No.

Why is explained in this MSDN post.

First, from a performance perspective the pointers get larger, so data
structures get larger, and the processor cache stays the same size.
That basically results in a raw speed hit (your mileage may vary). So
you start in a hole and you have to dig yourself out of that hole by
using the extra memory above 4G to your advantage. In Visual Studio
this can happen in some large solutions but I think a preferable thing
to do is to just use less memory in the first place. Many of VS’s
algorithms are amenable to this. Here’s an old article that discusses
the performance issues at some length:

Secondly, from a cost perspective, probably the shortest path to
porting Visual Studio to 64 bit is to port most of it to managed code
incrementally and then port the rest. The cost of a full port of that
much native code is going to be quite high and of course all known
extensions would break and we’d basically have to create a 64 bit
ecosystem pretty much like you do for drivers. Ouch.


Visual Studio 2022 is 64-bit

Visual Studio 2022 on Windows is now a 64-bit application. This means you can open, edit, run, and debug even the biggest and most complex solutions without running out of memory.



Update: April 19th 2021

Microsoft announced their preview Visual Studio 2022 64 bit