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Is there a way using to find out what version of ArcGIS is installed on a machine (i.e. 9.3., 10.0, 10.1)?

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or even a registry location would be helpful. I just need a way for the program to figure out what version of ArcGIS the user has installed. File paths won't work because ArcGIS doesn't seem to uninstall the old folders in the AppData folder – Nick Jan 17 '13 at 0:01
up vote 6 down vote accepted

In ArcObjects .NET, use the RuntimeManager e.g.:

Listing all installed runtimes:

var runtimes = RuntimeManager.InstalledRuntimes;
foreach (RuntimeInfo runtime in runtimes)

or, to just get the currently active runtime:

bool succeeded = ESRI.ArcGIS.RuntimeManager.Bind(ProductCode.EngineOrDesktop);
if (succeeded)
  RuntimeInfo activeRunTimeInfo = RuntimeManager.ActiveRuntime;

Also in arcpy, you can use GetInstallInfo.

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Reason for downvote? – blah238 Jan 17 '13 at 0:55
I gave +1 so was surprised to see 0 when I looked back just now too - I also liked your ArcPy reminder. – PolyGeo Jan 17 '13 at 1:08
IIRC RuntimeManager was introduced with ArcGIS 10.0, and therefore cannot be used to detect earlier ArcGIS versions. – stakx Aug 4 '15 at 12:24
Same goes for ArcPy -- that did not exist yet in versions prior to 10.0. – stakx Aug 4 '15 at 12:36

On a Win7 64 bit PC this Registry Key may help. I have 10.0 installed, and it reads 10.0.2414.


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This one is useful for when ArcObjects is unavailable, I use when building installers. – Kelly Thomas Jan 17 '13 at 0:32
On 32-bit this key is HKLM\SOFTWARE\ESRI\ArcGIS\RealVersion – mwalker Jan 17 '13 at 0:57
@mwalker Also on 64 bit with 10.1 I see HKLM\SOFTWARE\ESRI\ArcGIS\RealVersion, I wonder if this key exists at 10.0? – Kirk Kuykendall Jan 17 '13 at 4:13
@Kirk, I do not have that key on 64-bit at 10.1 -- wonder why not. – blah238 Jan 17 '13 at 4:23
@blah238 I've got 10.1 sp1, both desktop and server installed. Not sure which installation created the key. – Kirk Kuykendall Jan 17 '13 at 5:03

There seems to be an interface called IArcGISVersion with a getVersions method which may be what you need.


Above relates to Java (thanks @blah238) - here is link to .NET (thanks @JasonScheirer)

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That is for Java only. – blah238 Jan 17 '13 at 0:16
Link to the .Net version. – Jason Scheirer Jan 17 '13 at 0:17

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