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GlobalProtect VPN stopped working with Deco X55

GlobalProtect VPN stopped working with Deco X55

GlobalProtect VPN stopped working with Deco X55
GlobalProtect VPN stopped working with Deco X55
2026-04-29 18:29:38
Tags: #VPN
Model: Deco X55  
Hardware Version:
Firmware Version: 1.4.6II

I have a mesh network of 3 Deco X55 Pro and 2 Deco X55. I need to use GlobalProtect VPN for accessing my work network from home. For the last year this has worked fine. However, starting two weeks ago when I launch GlobalProtect my laptop loses all internet connection and must be rebooted to regain network access. This only happens on my home TP-Link network; GlobalProtect works fine on networks either at home or on business trips.

 

Has something changed in the TP-Link firmware/software to cause this change? I have to get GlobalProtect VPN working again for my job.

I don't know if it is related, but I now see exclamation marks next to all except the main Deco (which acts as a router) and the error message asks about channel Width for 5 GHz: 160 MHz or 80 MHz?

 

Thanks for your help!

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#1
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5 Reply
Re:GlobalProtect VPN stopped working with Deco X55
2026-04-29 20:47:25

  @idickers 

 

Do you know the hardware version of your Deco X55? You can find it on the bottom of the deco.

 

Thanks 

Need help with the Deco app, setup, Ethernet backhaul, network switch or rolling back firmware? Router or AP mode? https://community.tp-link.com/us/home/forum/topic/699816?page=1
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#2
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Re:GlobalProtect VPN stopped working with Deco X55
2026-04-29 21:40:27 - last edited 2026-04-29 21:42:34

  @idickers I'm not positive about the hardware version, but it does say US/1.26, SSID=Deco_D138

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#3
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Re:GlobalProtect VPN stopped working with Deco X55
2026-05-02 00:59:47

@Ryan 

 

Please advise 

Need help with the Deco app, setup, Ethernet backhaul, network switch or rolling back firmware? Router or AP mode? https://community.tp-link.com/us/home/forum/topic/699816?page=1
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#4
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Re:GlobalProtect VPN stopped working with Deco X55
2026-05-03 12:52:57

  @idickers I do notice that I can sometimes connect with GlobalProtect after restarting my Macbook Pro.

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#5
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Re:GlobalProtect VPN stopped working with Deco X55
3 weeks ago

  @idickers 

Hi, welcome to the community.

There have been no new firmware releases recently for Deco X55 Pro and Deco X55. In your case, please reboot the Deco nodes and check if that helps. If you have another laptop, please test whether you can launch GlobalProtect VPN on it.

 

If the same phenomenon persists, please send an email to forumsupport.usa@tp-link.com with the following information for further assistance.

 

Subject: [Forum Escalation][ID 863248] GlobalProtect VPN stopped working with Deco X55
Forum Nickname: [User Provided]
Thread URL:  https://community.tp-link.com/us/home/forum/topic/863248
Model&Version:  [User Provided]
Description: [User Provided]
Any Other Relevant Information (Logs, Config Files, Images, etc.): [User Provided]

 

Once sent, a ticket will be created in our support system, and a member of our support team will follow up to assist you.

 

Best Regards

>> Check What's Currently Going on With Deco >> Deco Wi-Fi Heatmap ready for all Deco models
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