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orop2

macrumors newbie
Original poster
Mar 8, 2021
4
1
Updated to Big Sur a couple of days ago and now Transmission tells me my port is closed, hence no transfers at all. While looking for answers I came across several postings here that claimed that Transmission worked fine with Big Sur back in November.
Can some of you who have a working Big Sur - Transmission setup let me know how they succeeded in making it work? I am stumped!

Cheers!
 

chrfr

macrumors G5
Jul 11, 2009
13,702
7,264
Transmission works fine for me in Big Sur without any special efforts.
 

orop2

macrumors newbie
Original poster
Mar 8, 2021
4
1
Good to hear. Did you upgrade from a previous OS with Transmission already installed or did you install Transmission after you ran Big Sur?
 

Jmacca

macrumors newbie
Jan 23, 2009
10
3
I'm having the same issue. Clean install of both Big Sur and Transmission. Been using Folx instead but really would prefer Transmission. Even if I manually open a open port on my router and manually point Transmission to it - still nothing ;(((

Strangely transmission is working on my OS X, on my MacBook. So its not the network. Any ideas?
 

orop2

macrumors newbie
Original poster
Mar 8, 2021
4
1
Update: After not succeeding initially I eliminated all transfers and started from zero. Kept the stuff I wanted to keep sharing and ditched the rest. Now TM started to work just fine.
I believe TM can't handle too many active transfers under Big Sur. I have 38 active transfers now and all is well.
 
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Partron22

macrumors 68030
Apr 13, 2011
2,655
808
Yes
The little light on "Peer listening port" is red on my copy of Transmission, but sharing is working fine.
I suspect a problem in the app's port testing rather than a problem with the port being closed.
 

orop2

macrumors newbie
Original poster
Mar 8, 2021
4
1
The little light on "Peer listening port" is red on my copy of Transmission, but sharing is working fine.
I suspect a problem in the app's port testing rather than a problem with the port being closed.
The same here - initially concerned me but was not the cause of the problem.
 

Bitmap Father

macrumors newbie
Oct 31, 2021
3
3
Sorry to dig up an old topic but I had the same problem when upgrading to Big Sur lately. And using a nightly build seems to fix the issue. If that can help some people.

Edit : talked too soon… it stops after a few seconds…
 
Last edited:
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