topic Re: MacOSX Tahoe 26.4.1 (25E253) / Global Protect 6.3.3: Network is unreachable in GlobalProtect Discussions

MacOSX Tahoe 26.4.1 (25E253) / Global Protect 6.3.3: Network is unreachable

Frederic_Ramage — Mon, 20 Apr 2026 15:21:56 GMT

Hi,

I've been facing an issue after upgrading my mac M3 to Tahoe 26.4.1 (25E253) (two days ago)

When trying to connect to my portal/gateway, I always have the same response: Network is unreachable.

Since I can browse to google or else, it's not a common/classic network issue.

The fact is, even I send a good or wrong user/pass: the result is the same.

Nothing on the logs in the Palo Alto.

I suspect it's a Mac os issue, since before the upgrade all was fine.

On my Palo Alto, no configuration has been changed.

If someone had this issue and was able to solve it, I would be happy to read about it.

Thanks a lot,

Fred

Re: MacOSX Tahoe 26.4.1 (25E253) / Global Protect 6.3.3: Network is unreachable

BPry — Mon, 20 Apr 2026 15:28:11 GMT

@Frederic_Ramage,

What PAN-OS version are you running? I've noticed issues with recent releases (IE: 12.1.16 and 11.2.11) when it comes to macOS, although I can't say for certain that it's actually tied to upgrading to macOS 26 in any way. You should still be able to see Portal authentication in what I've seen however, so you'll want to review your PanGPS logs and see exactly what error they are reporting.

Re: MacOSX Tahoe 26.4.1 (25E253) / Global Protect 6.3.3: Network is unreachable

Frederic_Ramage — Mon, 20 Apr 2026 16:51:00 GMT

Hello,

Thanks a lot for your reply.

You're right. I'am able to login to portal (in web).

And we've had 2 upgrades:

- Me with my mac

- The Palo Alto has been upgraded to 12.1.16 last week...

I may (try to) downgrade to previous 11.2.x version and see.

I'll get back to you with thee result when done.

Regards,

Fred

Re: MacOSX Tahoe 26.4.1 (25E253) / Global Protect 6.3.3: Network is unreachable

BPry — Mon, 20 Apr 2026 16:55:33 GMT

@Frederic_Ramage,

The only non-working 11.2 release is 11.2.11 that I'm aware of, you can run any of the previous builds without issue. We've unfortunately seen some stability issues on 11.2.* outside of 11.2.11 in a couple of environments, so I've actually got a PA-440 operating as a macOS only VPN termination endpoint due to this issue.

Re: MacOSX Tahoe 26.4.1 (25E253) / Global Protect 6.3.3: Network is unreachable

Frederic_Ramage — Tue, 21 Apr 2026 06:27:55 GMT

following your advice, we downgraded to 11.2.10-H5. All is working fine now.

Previously, we ran 12.1.6 where Mac M3 and Mac Intel cannot connect.

Many thanks for your help, faster than the Palo Alto support...

Regards,

Fred

Re: MacOSX Tahoe 26.4.1 (25E253) / Global Protect 6.3.3: Network is unreachable

Pan_os — Wed, 13 May 2026 19:29:40 GMT

we had same issue, any fix for 12.1.x ? we solved with downgrading to 11.2.x

Re: MacOSX Tahoe 26.4.1 (25E253) / Global Protect 6.3.3: Network is unreachable

BPry — Wed, 13 May 2026 19:33:34 GMT

@Pan_os,

At this point I think the hope is that 12.1.7 would include a fix for the issue, alongside 11.2.12 when they release on the 28th to fix the 11.2 train post 11.2.10.