Server settings are unavailable after last update. MacOS

Plex Media Server Desktops & Laptops
50

Known working version: 1.28.2.6151 (download)
Known working version: 1.29.0.6244 (download)

You need to do a downgrade to one of the above versions.
I’ve tested both on my 2018 Mini x64 with 10.14.6 like you.
Normally downgrading is as easy as stopping PMS and dropping a new one into /Applications.
But by changing your plist you now have to sign out and reclaim.

How To Sign Out PMS on a MAC, Downgrade, and Reclaim

Sign out PMS from Remote and Local logins

  1. Quit out of PMS on the Mini if it’s running.
  2. Open the hosted web app → Settings → Authorized Devices → Servers (it’s a drop down)
    Delete your Mini PMS from the list.
  3. Open a Terminal on the Mini and issue the commands below.
    Don’t expect any output.
    If you see Domain (com.plexapp.plexmediaserver) not found you can ignore it.
defaults delete com.plexapp.plexmediaserver PlexOnlineHome
defaults delete com.plexapp.plexmediaserver PlexOnlineMail
defaults delete com.plexapp.plexmediaserver PlexOnlineToken
defaults delete com.plexapp.plexmediaserver PlexOnlineUsername

Downgrade

  1. Quit out of PMS if it’s running.
  2. Download the older Plex Media Server 1.29.0.6244 from the link above.
  3. Go into your downloads folder and double click it to unzip it.
  4. Drag the app from Downloads and drop it into /Applications and Replace

Reclaim

  1. Safari → History - Clear History → All History → Clear History
  2. Restart the Mac. Do not select Reopen Windows When Logging Back In
  3. In Finder → Applications on the Plex Media Server icon CTRL+Right Click or CTRL+2FingerTap
  4. Choose Open and Open to get past the Unsigned or Unverified warning.
  5. Getting your Plex claim token:
    – With PMS started on the Mac
    – In a new Safari tab, open Claim | Plex
    – It will present you with a claim-xxx token
    – COPY it
  6. In a terminal on your Mac issue the claiming command where you replace
    PASTE_TOKEN_HERE with the everything copied in step (5).
curl -X POST 'http://127.0.0.1:32400/myplex/claim?token=PASTE_TOKEN_HERE'

Our hero explains the rest.

Notes
Where ChuckPA says “Open via the LAN IP” I open Plex for Mac.
I just tried all these steps, and it works great, like a :rocket:

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