Recorded a meeting, sound fell off

Hello,

To my knowledge, there is no way to restore any sound to a recording once complete whether it be a local or cloud recording. You can submit a Zoom Support case if you would like to find out more on how or what occurred to cause this if it is a cloud recording. If this is a local recording this occurred on there is nothing we can do to find out what caused the issue as it is with your local device that it occurred on.

Thank you,

Jake