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    <title>topic How to determine the version of ArcGIS for Desktop that is installed? in ArcObjects SDK Questions</title>
    <link>https://community.esri.com/t5/arcobjects-sdk-questions/how-to-determine-the-version-of-arcgis-for-desktop/m-p/311112#M8108</link>
    <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;SPAN&gt;Hello,&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;With ArcGIS 10.0 and now ArcGIS 10.1, I'm wondering what is the best way to determine the version of ArcGIS for Desktop that is installed?&amp;nbsp; Is there one location that I can go to in the registry to determine whether 10.0 or 10.1 is installed?&amp;nbsp; Before with ArcGIS 8.x and ArcGIS 9.x, you could just check the registry to determine this information.&amp;nbsp; HKEY_LOCAL_MACHINE\SOFTWARE\ESRI\ArcInfo\Desktop\8.0\RealVersion would provide the version number for all versions of ArcGIS from versions 8.0 through 9.3.1.&amp;nbsp; But with the release of ArcGIS 10.0, there doesn't seem to be one location anymore since you now need to either check HKEY_LOCAL_MACHINE\SOFTWARE\ESRI\Desktop10.0\RealVersion or HKEY_LOCAL_MACHINE\SOFTWARE\ESRI\Desktop10.1\RealVersion to determine the version number.&amp;nbsp; Which is a problem if you are trying to determine whether 10.0 or 10.1 is installed.&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;Thanks in advance,&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;Anthony&lt;/SPAN&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
    <pubDate>Tue, 03 Jul 2012 22:22:52 GMT</pubDate>
    <dc:creator>AnthonyW</dc:creator>
    <dc:date>2012-07-03T22:22:52Z</dc:date>
    <item>
      <title>How to determine the version of ArcGIS for Desktop that is installed?</title>
      <link>https://community.esri.com/t5/arcobjects-sdk-questions/how-to-determine-the-version-of-arcgis-for-desktop/m-p/311112#M8108</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;SPAN&gt;Hello,&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;With ArcGIS 10.0 and now ArcGIS 10.1, I'm wondering what is the best way to determine the version of ArcGIS for Desktop that is installed?&amp;nbsp; Is there one location that I can go to in the registry to determine whether 10.0 or 10.1 is installed?&amp;nbsp; Before with ArcGIS 8.x and ArcGIS 9.x, you could just check the registry to determine this information.&amp;nbsp; HKEY_LOCAL_MACHINE\SOFTWARE\ESRI\ArcInfo\Desktop\8.0\RealVersion would provide the version number for all versions of ArcGIS from versions 8.0 through 9.3.1.&amp;nbsp; But with the release of ArcGIS 10.0, there doesn't seem to be one location anymore since you now need to either check HKEY_LOCAL_MACHINE\SOFTWARE\ESRI\Desktop10.0\RealVersion or HKEY_LOCAL_MACHINE\SOFTWARE\ESRI\Desktop10.1\RealVersion to determine the version number.&amp;nbsp; Which is a problem if you are trying to determine whether 10.0 or 10.1 is installed.&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;Thanks in advance,&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;Anthony&lt;/SPAN&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Tue, 03 Jul 2012 22:22:52 GMT</pubDate>
      <guid>https://community.esri.com/t5/arcobjects-sdk-questions/how-to-determine-the-version-of-arcgis-for-desktop/m-p/311112#M8108</guid>
      <dc:creator>AnthonyW</dc:creator>
      <dc:date>2012-07-03T22:22:52Z</dc:date>
    </item>
    <item>
      <title>Re: How to determine the version of ArcGIS for Desktop that is installed?</title>
      <link>https://community.esri.com/t5/arcobjects-sdk-questions/how-to-determine-the-version-of-arcgis-for-desktop/m-p/311113#M8109</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;SPAN&gt;Hello,&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;Just thought I'd let everyone know what I ended up doing.&amp;nbsp; I used HKEY_LOCAL_MACHINE\SOFTWARE\ESRI\ArcGIS\RealVersion to determine the version.&amp;nbsp; From this, you can parse out the version - 10.0 or 10.1.&amp;nbsp; And then you can use this to access the appropriate registry key: HKEY_LOCAL_MACHINE\SOFTWARE\ESRI\Desktop10.x.&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;Cheers,&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;Anthony&lt;/SPAN&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Thu, 05 Jul 2012 23:30:31 GMT</pubDate>
      <guid>https://community.esri.com/t5/arcobjects-sdk-questions/how-to-determine-the-version-of-arcgis-for-desktop/m-p/311113#M8109</guid>
      <dc:creator>AnthonyW</dc:creator>
      <dc:date>2012-07-05T23:30:31Z</dc:date>
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