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I downloaded and installed Quantum GIS 1.5.0 with GRASS using the OSGeo4W installer on my Windows XP machine. Unfortunately, when I go to Plugins>Manage Plugins I cannot find the GRASS plugin. When I browse to OSGeo4W\apps\qgis\plugins I can see grassplugin.dll, grassrasterprovider.dll and grassprovider.dll. So, I would appreciate it if someone could tell me how to make QGIS recognize the GRASS install.

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Is GRASS itself installed via OSGeo4W? Do you see other plugins? – underdark Oct 1 '10 at 9:12
What do you see if you go to Plugins>GRASS? I see 4 plugins enabled, but the rest are grey'd-out. I haven't installed GRASS though. – DavidF Oct 1 '10 at 15:01
Hi jvangeld, we'll need further information from you in order to answer your question. – scw Oct 4 '10 at 17:59
Underdark, GRASS, QGIS and the Grass Plugin were all installed through OSGeo4W. – jvangeld Oct 9 '10 at 0:28
David, I do not have an option for GRASS in my Plugins menu, and it does not show up in Manage Plugins... – jvangeld Oct 9 '10 at 0:29
up vote 5 down vote accepted

I just installed QGIS 1.5.0 two days ago. The GRASS plugin shows up in my Plugin Manager and under the Plugin Menu. I used the Standalone Installer though, rather than the OSGeo4W Installer. You might want to try that route. (

You also have to set up a GRASS Database through the "Plugins > Grass > New Mapset" menu in order to get the other GRASS Plugin Menu items to become active.

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Thanks! That did it. Apparently there is some issue with the OSGeo4W installer and the GRASS plugin. – jvangeld Oct 9 '10 at 1:36

See also the draft "QGIS GRASS Cookbook" which is available here:

In the long run it should go into the QGIS user manual as well.

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