GP Client Error: Gateway Protocol Error, Check Server Certificate

GP Client Error: Gateway Protocol Error, Check Server Certificate

40103
Created On 09/26/18 13:50 PM - Last Modified 04/17/26 10:49 AM


Symptom


After configuring Global Protect, installing the client and trying to connect, the following error occurs on the GP Client:

GP Client Error: Gateway xx.xx.xx.xx : Protocol Error, Check server Certificate.

After configuring Global Protect, installing the client and trying to connect, the following error occurs on the GP Client.



Environment


  • GlobalProtect Client 
  • GlobalProtect Gateway


Resolution


To fix this issue, check for the following:

  • Incorrect time settings on the firewall.
  • Check the certificate's validation dates (valid from and valid until) to make sure the date range is correct.
  • Check the Time Setting on the firewall. Use NTP if the time stamp isn't accurate.


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    https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA10g000000ClryCAC&refURL=http%3A%2F%2Fknowledgebase.paloaltonetworks.com%2FKCSArticleDetail

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