topic Re: A problem with launching Portal Agent has been detected several times in Endpoint

A problem with launching Portal Agent has been detected several times

kiikoo15 — Tue, 02 Dec 2025 19:43:33 GMT

I am encountering a persistent issue when trying to connect via the SSL VPN Portal on my Windows 10 laptop.

Whenever I try to connect, the Mobile Access Portal Agent fails to launch, and I receive the following error message: "A problem with launching Portal Agent has been detected several times. Contact your System Administrator. Code: 300"

My Environment:

OS: Windows 10 (Fully updated)
Antivirus: Windows Defender only (no 3rd party security software installed).

Troubleshooting steps I have already taken (without success):

Uninstalled and reinstalled the SSL Network Extender (SNX).
Uninstalled and reinstalled the Mobile Access Portal Agent.
Completely uninstalled previous Java versions.
Installed JDK 20.
Cleared browser cache and local App Data temp files related to Check Point.

Despite these steps, the "Code 300" error persists. The agent simply refuses to initialize properly.

Has anyone experienced this specific behavior with recent Windows 10 updates? Are there specific logs I should look into to diagnose why the agent is failing to launch?

Any help would be appreciated.

Thanks.

Re: A problem with launching Portal Agent has been detected several times

the_rock — Tue, 02 Dec 2025 23:00:20 GMT

Does it happen only on that one machine?

Re: A problem with launching Portal Agent has been detected several times

kiikoo15 — Tue, 02 Dec 2025 23:01:15 GMT

Yes just in one machine

Re: A problem with launching Portal Agent has been detected several times

the_rock — Tue, 02 Dec 2025 23:03:58 GMT

And any other machine with windows 10 is fine?

Re: A problem with launching Portal Agent has been detected several times

kiikoo15 — Tue, 02 Dec 2025 23:06:43 GMT

Yes, the other computers don't have any problems.

Re: A problem with launching Portal Agent has been detected several times

the_rock — Tue, 02 Dec 2025 23:08:29 GMT

Then its 100% safe to assume its just that machine thats the problem, nothing to do with CP side. Honestly, I would do the reset option from the settings and test.

Re: A problem with launching Portal Agent has been detected several times

VIKAS1 — Wed, 03 Dec 2025 06:44:04 GMT

Try to Install JAVA 17 and check, also try to connect on private windows

Re: A problem with launching Portal Agent has been detected several times

the_rock — Wed, 03 Dec 2025 11:58:09 GMT

Hey Vikas,

Sounds that was already attempted.

Re: A problem with launching Portal Agent has been detected several times

the_rock — Wed, 03 Dec 2025 12:40:59 GMT

@kiikoo15 Did mention JDK 20 though, not sure if version 17 was attempted. Regardless, based on all that was mentioned already, since its only this one machine, sounds to me reset of it would be the most logical thing to do.

Re: A problem with launching Portal Agent has been detected several times

the_rock — Thu, 04 Dec 2025 16:23:07 GMT

Hey mate,

Were you able to sort this out?

Re: A problem with launching Portal Agent has been detected several times

kiikoo15 — Thu, 04 Dec 2025 16:43:38 GMT

Hey,
Im waiting for user to test again. If i can fix i will the solution and what i do

Re: A problem with launching Portal Agent has been detected several times

the_rock — Thu, 04 Dec 2025 16:45:25 GMT

Fair enough. Personally, I would try reset the PC.

Re: A problem with launching Portal Agent has been detected several times

kiikoo15 — Fri, 05 Dec 2025 15:09:47 GMT

Hello,

I install the Java version 17 and function, thank you all for help.

Re: A problem with launching Portal Agent has been detected several times

kiikoo15 — Fri, 05 Dec 2025 15:10:30 GMT

Yes with this version function.

Re: A problem with launching Portal Agent has been detected several times

the_rock — Fri, 05 Dec 2025 15:11:54 GMT

Excellent!

Re: A problem with launching Portal Agent has been detected several times

VIKAS1 — Mon, 08 Dec 2025 04:44:50 GMT

Great!!

Re: A problem with launching Portal Agent has been detected several times

the_rock — Mon, 08 Dec 2025 11:52:42 GMT

Its actually interesting it worked with version 17, but not 20. O well, its good to know!