Worked fine until today - can't record

Windows 10, Audacity 3.1.3

Every time we hit record it just stops before a second is up, or doesn’t record at all. We deleted the three hidden files mentioned on an earlier post today, still didn’t work, then we reinstalled it, still doesn’t work. Never had any issues before and we’ve used it for years. We are using an SSL 2+ which we’ve had for about a year without issue.

It may be that some other app has grabbed too much control of the sound card.
Try rebooting the PC, and don’t launch any apps other than Audacity.

(I recently had a similar problem due to Firefox launching “speech-dispatcher”, which prevented Audacity from recording more than one track).