@Krakatos 

The suggested solution is not working for me. Ifind it difficult to understand why TP Link has not adressed this issue already. This thread is 2 years old?

I have same issue where my TL-PA9020P shows all green LEDS (and I'm using it to connect to web) but have no success in being able to see the devices with tpPLC. I've tried @Krakatos suggestions without success on 2 different computers. Any other suggestions are appreciated. (I've had the adapters for a couple years and tpPLC "used to work" but I've upgraded my internet connection and wanted to investigate the tpPLC connections, but without success. Thanks.

@MMNC 

Have you tried what i also mention in the past? It worked for me when i had no ideas left:

Disable any endpoint protection you may have (eg symantec) or change the setting of the client to something less strict like "out of office premises".

Maybe an antivirus also has the same effect and blocks it.

Also recently after i added a newer version base, i couldnt access the web interface or utility of the earlier 4220 V1 extender to change settings and this worked for me:

I connected the laptop to the default SSID of the 4220 v1

I started the v1 specific utility "Powerline Scan.exe" (maybe you can find something similar for your device)

It detected the 4220 v1 and gave me an option through the tool to connect to it.

It connected to ip http://192.168.178.238/ which is not an ip address i have seen around (or maybe i missed?)

used the default credentials and i was able to change what i needed (SSID, pwd etc)

Maybe it gives you something more to try...

good luck!

I'm having exactly the same issues the utility refuses to see any of my PowerLine Devices PA7020P V.3.

This is on Windows 10 Version 20H2 using winpcap 10 and I've disbled my Symantec Endpoint Protection.

Tried running in compatibility mode (Windows 10 recomended running it as Windows 8) link is working but I am having some issues with connections that have just started and would like to Monitor the link and check that I have the latest firmware.

So TP-Link - how do I go about fixing this issue?

Thanks.

The level of support of this product is poor. Never buying anything with TP on it. After a Windows update devices wont work because the utility and the phone apps wont talk to the devices anymore !  

@AVodi same problem

tried all fixes

used to work

now just shows what looks like a FlashPlayer logo with a question mark.

Does it rely on Flash?

Needs fixing - Flash no longer available.

Keep up TP!!!!! :(

@patricktoh 

The issue is not that the utility does not recognize the devices (it does with the latest version) but that it does not offer the user any access to the devices to rename them or configure them. And the mobile apps not working is a disaapointment.