Plex Media Player is not compatible with Big Sur

Plex Players Desktop Players
1

I did a completely clean install of macOS Big Sur yesterday and went to install Plex Media Player today and I get:

“Plex Media Player” can’t be opened because Apple cannot check it for malicious software.

This software needs to be updated. Contact the developer for more information.

Now, I know I can override this but I would rather Plex fix this quick.

2

As a workaround, try pressing <option> after right-clicking on the app in the applications folder with Finder. This should give you the option to “open anyway” and only needs to be done once.

3

This is what I have done for now, but the developers need to address this still.

4

I think you should at least change the title of the thread. It’s not in line with the actual issue.

5

Same here, updated to Big Sur yesterday, now Plex won’t run.
Ver.
1.20.5.3600-47c0d9038
November 17, 2020

6

I gather your talking Plex media server and not player. If so you need start your own discussion.

On another note, I have PMS working perfectly on Big Sur. You may have a Extension or AV that is creating your issue

7

Same problem here. There must be some security change that is causing Plex to choke. In my case, no live TV.

8

Same problem here. I had initially installed Plex server on an older OS and then upgraded to Big Sur. No issue. I decided to rebuild my Mac mini and went straight to Big Sur and now I get these errors. Plex seems to be running ok though I think…

“libaac_decoder.dylib” can’t be opened because Apple cannot check it for malicious software.
“libhevc_decoder.dylib” can’t be opened because Apple cannot check it for malicious software.
“liblibmp3lame_encoder.dylib” can’t be opened because Apple cannot check it for malicious software.
“libmsmpeg4v3_decoder.dylib” can’t be opened because Apple cannot check it for malicious software.
“libdca_decoder.dylib” can’t be opened because Apple cannot check it for malicious software.
“libmp2_decoder.dylib” can’t be opened because Apple cannot check it for malicious software.
“libh264_decoder.dylib” can’t be opened because Apple cannot check it for malicious software.
“libwmv3_decoder.dylib” can’t be opened because Apple cannot check it for malicious software.
“libmp3_decoder.dylib” can’t be opened because Apple cannot check it for malicious software.
“libmpeg4_decoder.dylib” can’t be opened because Apple cannot check it for malicious software.
“libac3_encoder.dylib” can’t be opened because Apple cannot check it for malicious software.
“libac3_decoder.dylib” can’t be opened because Apple cannot check it for malicious software.
“liblibx264_encoder.dylib” can’t be opened because Apple cannot check it for malicious software.
“libwmav2_decoder.dylib” can’t be opened because Apple cannot check it for malicious software.

9

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