Global Protect 6.2.7 VPN fails to connect after Tahoe 26.1 upgrade.

You are using an unsupported version of Global Protect. At minimum, on the 6.2 branch, you need 6.2.8.

See the compatibility matrix here.

I have customers with 6.2.8 and I can confirm they are operating normally under 26.1. Ask your VPN admin for the updated version if they do not publish the web portal.

As for Cortex, you should be fine with 9.0 based on this compatibility matrix. I no longer have first hand exposure to Cortex as all corporate customers have moved to Defender of other solutions.

Try upgrading Global Protect and retest. Hope this is helpful.

gnosislibrarian wrote:

@dialabrain & @Strontium90

I have no other options other than GP 6.2.7

GP 6.2.7 works with Sequoia but does not work with Tahoe, which requires 6.2.8. If you have no other option than 6.2.7, no one here can help you get around the incompatibility, you may have to accept the compromised behavior you have encountered.

gnosislibrarian wrote:

I have no other options other than GP 6.2.7

Sure you do. Let your manager know that you need the assistance of your IT group to unblock access.

dialabrain wrote:

Personally, I would not install GlobalConnect or any third-party VPN.

I would not either except some corporate networks require specific VPNs and specific configurations (which the company distributes to its employees). We use Global Protect for our corporate network to enable remote access, the company tests it on the MacOS versions that it supports before releasing the specific supported configuration files to its employees who require external access (for instance when on travel).

First, there is no reason to ever install or run any 3rd party "cleaning", "optimizing", "speed-up", anti-virus, VPN or security apps on your Mac.  These documents describe what you need to know and do in order to protect your Mac: Effective defenses against malware and other threats - Apple Community and Recognize and avoid phishing messages, phony support calls, and other scams - Apple Support.  

There are no known viruses, i.e. self propagating, for Macs.  There are, however, adware and malware which require the user to install although unwittingly most of the time thru sneaky links, etc.   

Anti Virus developers try to group all types as viruses into their ad campaigns of fear.  They do a poor job of the detecting and isolating the adware and malware.  Since there are no viruses these apps use up a lot of system resources searching for what is non-existent and adversely affect system and app performance.

There is one app, Malwarebytes, which was developed by a long time contributor to these forums and a highly respected member of the computer security community, that is designed solely to seek out adware and known malware and remove it.  The free version is more than adequate for most users.  

Unless you're using a true VPN tunnel, such as between you and your employer's, school's or bank's servers, they provide false security from a privacy standpoint.  Read these two articles: Public VPN's are anything but private and Security Risks: The Dangers of Using Free VPNs (eccu.edu).  

Additionally, a new study ("Apple Offers Apps With Ties to Chinese Military”) is specifically about VPN apps in Apple’s App Store.

However, if your company or school requires that software ignore this reply.

Personally, I would not install GlobalConnect or any third-party VPN.