@renojim Thank you, that did the trick. Annoying that it happens (a few times a year it seems). But better than doing a full factory reset.
I have the same problem.
Here is my info:
Model 3940RW - Roku Express 4K
Serial number X016006P1UJX (S07R21CP1UJX)
Software version 14.0.4 build 12221-CR
GC version: 12.8.19
Issue ID: JX-523-729