KRE online activation failed

I’m installing KRE and try to activate it online with valid license. I get following error:
> The number of valid offline licenses: 0

Offline activation failed.
Start activating online...
Katalon TestOps: Unexpected response, URL:, Status: 503, Response: <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<title>503 Service Temporarily Unavailable</title>
<h1>Service Temporarily Unavailable</h1>
<p>The server is temporarily unable to service your
request due to maintenance downtime or capacity
problems. Please try again later.</p>
<address>Apache/2.2.15 (Red Hat) Server at Port 443</address>

Is the service unavailable now?

My linux box can’t visit public internet. When i activate KRE, we added a HTTP proxy.


Did you add the proxy parameters to your command line ?

You can configure the proxy in Katalon Studio (the latest version) and generate the command line, the resulting command will include the proxy parameters for you.

tried to configure proxy and use the proxy options, same result:
–config -proxy.auth.option=MANUAL_CONFIG -proxy.auth.server.type=HTTP -proxy.auth.server.address= -proxy.auth.server.port=443, -proxy.system.option=NO_PROXY -proxy.system.applyToDesiredCapabilities=true

Is this service available or no? @ThanhTo

Yes, this service is available. You can check katalon service here

Katalon has proxy options to exclude some hosts. My situation is the proxy only allows one host. Is there an option to permit one host to use this proxy?
Looking forward for your help.
@ThanhTo @Thong

If the license activation succeeds in your local machine, then it suggests you are using a node-locked Runtime Engine. If the build server is something that requires a DevOps Runtime Engine, then it would explain the error message.

Hello everyone,

You’re recommended to read this announcement regarding the consolidation of both Katalon Runtime Engine DevOps and Floating licenses into one licensing offering, Floating .