No Sound on Instagram Stories on a Mac

    Please try these resets, if you have not already.

      1. Reset NVRAM/PRAM.  http://support.apple.com/kb/PH18761        

      2. Reset SMC. Choose the method for “If the battery is non-removable”.

          https://support.apple.com/en-us/HT201295

      3. Start up in Safe Mode. https://support.apple.com/en-us/HT201262

Once in Safe Mode, click the “Restart” button at the bottom.

Are you running any anti - virus programs? Using a VPN?

You can also try setting up another admin user account in System Preferences/Users & Groups to see if the same problem continues.

Isolating an issue by using another user account 

If it works in the Safe Mode, try running this program when booted normally and then copy and paste the output in a reply. The program was created by Etresoft, a frequent contributor.  Please use copy and paste as screen shots can be hard to read. Click “Share Report” button in the toolbar, select “Copy to Clipboard” and then paste into a reply. This will show what is running on your computer. No personal information is shown. If the log won’t post, try posting it in Pastebin and provide a link in a reply. After pasting the report in a PasteBin page, go to the top of the page, and copy the address in the URL bar. Paste that in a new reply.        Pastebin

Etrecheck – System Information

Web site version if required.  https://etrecheck.com