'Android 11 wifi adb error "Unable to start pairing client"

I downloaded the latest platform-tools for windows, then I enabled developer mode on my phone and turned on adb over wifi. However after I enter the command adb pair ipaddr:port I get the error "Failed: Unable to start pairing client" (after entering the code).

adb is working fine over the cable, and wifi adb is working with my watch. Any ideas?

android adb

Solution 1:^[1]

I tried all possible way. Then I click on forget wifi and then again connect to wifi then entered the pair and code again then it starts working

Solution 2:^[2]

Had the same problem. Turns out the port used for adb pairing changes each time you ask for a pairing code. I didn't update mine, so it didn't work. When I realized that, and typed in the pairing code, everything worked as expected.

Solution 3:^[3]

In my case I was connected to a VPN on my workstation and that's why I got this message. Disconnecting from the VPN fixed it.

Solution 4:^[4]

Try pinging the device 2-3 times and then pair. Only this solution worked for me.

Solution 5:^[5]

For me, it worked after I restarted Android Studio (or the command line).

Solution 6:^[6]

One solution that worked for me is to try and establish a tcp connection first to the pairing target.

nc -vz <ip_addr>:<pairing_port>

Once this is successful in establishing a connection, proceed with adb pair. I'm not sure why, but this is the only thing that worked for me. Rest all failed.

Solution 7:^[7]

If you've recently enabled developer mode on your phone, try restarting it. I was receiving the error, "Failed: Unable to start pairing client", then I rebooted my phone and after that I was able to pair.

Solution 8:^[8]

I was on a guest wifi network that blocked inter device communication. Switching to my main network solved it.

Solution 9:^[9]

My issue was I had AFwall+ enabled, so some network connections where blocked which should not have been. I don't know which exactly, but disabling the firewall made it pair.

Solution 10:^[10]

In my case "User Isolation" was enabled on my modem router which prohibited direct communication between connected devices, after I disable it everything worked as expected.

Solution 11:^[11]

for me , I try all way ,close wifi or restart computer or restart phone, failed ?they all failed . Until I shut down my VPN , it automatically connected? after that, I connect my phone after close the vpn, The connection has never failed

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution	Source
Solution 1	Rajesh Garg
Solution 2	Martin_xs6
Solution 3	Gabriel Getzie
Solution 4	Sheth Nisarg
Solution 5	Alwin07
Solution 6	yaswanth
Solution 7	sandalwoodsh
Solution 8	David C. Rynearson
Solution 9	oarfish
Solution 10	Ali Khazaei
Solution 11	1mean

'Android 11 wifi adb error "Unable to start pairing client"

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