What other workarounds do Capcom suggest?
Finally, as per the final step of the original troubleshooting method, try rebooting your PC.
Hey, sometimes you get lucky and turning it off and on again actually works.

If it is set to 3 or 4, the default button is X.
So see to it you’re pressing enter instead of back, basically.
But it’s probably useful to be aware of this quirk nevertheless.

What causes the “failed to save” bug in Monster Hunter Rise?
Capcom have yet to officially comment on the root cause behind the bug.
Others have blamed the inclusion in the PC port of the controversialDenuvoanti-cheat software, though again this is unconfirmed.