Hi  @UniFly 

Firstly, EAP610 is not compatible with controller V3. It's too old, so let's focus on the controller v5 issue.

but when I try to exit the controller, I can't log in again, when I press shoprtcut, it only gives me a .jar file.

>>>Could you please share a screenshot or a short video showing this process?

In the meantime, you may have a look on the following guide:

What to do if you cannot find the page of Omada SDN Controller

  @Vincent-TP thanks for the reply sir, 



the controller only open when i first launched the controller (first installing), but when i exit the controller and tried to launch it again, it downloaded the .jar file like that. thanks in advance sir.

UniFly wrote

  @Vincent-TP thanks for the reply sir, 



the controller only open when i first launched the controller (first installing), but when i exit the controller and tried to launch it again, it downloaded the .jar file like that. thanks in advance sir.

  @UniFly 

do u mean this page will show up when you double click the Omada controller icon on the desktop?

What's the operation system of the PC? And what's the java version of the PC?

You may refer to the following to update the java for this PC.

How to install Java Runtime Environment (JRE) for Omada SDN Controller on Windows

  @Vincent-TP  may i give a little addition sir, when i asked my region's TP-Link Customer Support, they said that omada software controller needed to keep on for 24hours, is that the reason that the controller gave me the .jar file after i quit the controller or restarted my PC?, thanks

  @Vincent-TP yaa, thats right, the jar file keep downloading when i click the omada shortcut

  @UniFly  i used java 8 on windows 11 os 

UniFly wrote

  @Vincent-TP  may i give a little addition sir, when i asked my region's TP-Link Customer Support, they said that omada software controller needed to keep on for 24hours, is that the reason that the controller gave me the .jar file after i quit the controller or restarted my PC?, thanks

  @UniFly 

Hi, this is not related. And we don't need to keep the controller running for 24 hours. Unless you need to use  some advanced features which require the controller to function.

  @UniFly 

This is weird.

Did you try installing the latest Omada Controller 5.15.6.7? Will the issue persist?

Please uninstall the current controller and don't retain any data.

  @Vincent-TP  thank you for telling me sir, I accept their explanation, because I think it's true...
If that's the case, it means there was a problem with me when installing my controller, right?