QGIS 3.18 - CRITICAL- Problem with GRASS installation: GRASS was not found or is not correctly installed

[hugonbgg]

I installed QGIS 3.18 using the OSGeo4w express desktop install but the GRASS algorithms do not appear in the toolbox. When I look at the log it is displayed: "QGIS 3.18 - CRITICAL- Problem with GRASS installation: GRASS was not found or is not correctly installed" Using the advanced install of OSGeo4w the same problem occurs.

It is a new installation and with a new profile, I deleted everything to test if it was not a file conflict.

To reproduce:

• Install QGIS 3.18 using express desktop install on OSgeo4w.
• Start QGIS
• Enable GRASS Plugin
• Enable log messages QGIS and OS versions

QGIS version 3.18.0-Zürich QGIS code revision bdef9fb328 Compiled against Qt 5.11.2 Running against Qt 5.11.2 Compiled against GDAL/OGR 3.1.4 Running against GDAL/OGR 3.1.4 Compiled against GEOS 3.8.1-CAPI-1.13.3 Running against GEOS 3.8.1-CAPI-1.13.3 Compiled against SQLite 3.29.0 Running against SQLite 3.29.0 PostgreSQL Client Version 11.5 SpatiaLite Version 4.3.0 QWT Version 6.1.3 QScintilla2 Version 2.10.8 Compiled against PROJ 6.3.2 Running against PROJ Rel. 6.3.2, May 1st, 2020 OS Version Windows 10 (10.0) Active python plugins db_manager; MetaSearch; processing

[gioman]

@hugonbgg duplicate of https://trac.osgeo.org/osgeo4w/ticket/661 ?

[hugonbgg]

No, they are different problems. GRASS works normally here, the problem is to access GRASS within QGIS via the processing toolbox.

@hugonbgg duplicate of https://trac.osgeo.org/osgeo4w/ticket/661 ?

[gioman]

No, they are different problems. GRASS works normally here, the problem is to access GRASS within QGIS via the processing toolbox.

@hugonbgg are you launching QGIS with the "with GRASS" shortcut? if you don't then you don't have GRASS in processing...

[hugonbgg]

No, they are different problems. GRASS works normally here, the problem is to access GRASS within QGIS via the processing toolbox.

@hugonbgg are you launching QGIS with the "with GRASS" shortcut? if you don't then you don't have GRASS in processing...

Yes, I am using QGIS with the "with GRASS" shortcut and GRASS 7 is enabled in the plugins. And yet GRASS is not displayed in the Processing Toolbox and the message log displays "CRITICAL- Problem with GRASS installation: GRASS was not found or is not correctly installed"

[gioman]

Yes, I am using QGIS with the "with GRASS" shortcut and GRASS 7 is enabled in the plugins. And yet GRASS is not displayed in the Processing Toolbox and the message log displays "CRITICAL- Problem with GRASS installation: GRASS was not found or is not correctly installed"

@hugonbgg I have just tested on clean Win10 machine using the new osgeo4w installer and all works as expected in GRASS/Processing.

[gioman]

Maybe you have missed to install some package with osgeo4w(?).

[hugonbgg]

Now it worked! I used the new OSGeo4w installer: http://download.osgeo.org/osgeo4w/testing/osgeo4w-setup.exe Many thanks @gioman! In the "old" OSGeo4w, GRASS is not displayed in version 3.18 and 3.16.4.

[shiquwucan]

我用QGIS3.22.5也识别不到grass，但我我没有理解你是怎么让grass恢复使用的？