Word (or Office in general) refusing to get proofing tools to work (spelling checker doesn’t work, spawns these odd errors, won’t find any spelling mistakes, etc).
Lots of Googling and running Microsoft “fixit” applications didn’t do much.
Simple fix: run setup of the proofing tools again, and select repair, reboot, and all should be good.
One reply on “There is not enough memory or disk space to run the grammar checker”
I have done exactly that, more than once, without success. Microsoft needs to work on a good solution for this behavior.