I'm running into issues with SAGA processing algorithms in QGIS 3.18. QGIS tells me that SAGA 7.8.2 isn't supported, but doesn't tell me which versions are.

I've seen a suggestion that 2.3.x is officially supported, but how do I make QGIS aware of the version I've installed? I've tried downloading and installing SAGA 2.3.1, but QGIS still tells me I'm using the unsupported 7.8.2.

1 Answer 1


Uninstalling all versions of SAGA and then QGIS, followed by reinstalling QGIS 3.18 did the trick - it installed SAGA 2.3.2 linked to QGIS.

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