Unable to access private applications via Explicit Proxy from Prisma Browser

Unable to access private applications via Explicit Proxy from Prisma Browser

693
Created On 03/14/25 08:20 AM - Last Modified 12/08/25 22:05 PM


Symptom


  • The client device is unable to connect to the private application.
  • The device browser is Prisma Browser. Also, it uses Agentless Explicit Proxy.
  • The site is HTTP, not HTTPS.
  • From a HAR file, there is no response from the site(proxy).


Environment




Cause


Prisma Browser is sending CONNECT methods. The CONNECT methods should be sent for HTTPS sites.



Resolution


  1. The issue is only observed for HTTP sites.
  2. Prisma Browser can access HTTPS sites.
  3. HTTP access is not recommended even for the private applications.
  4. Use HTTPS connections to resolve the issue.


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    https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA14u000000HFDzCAO&lang=en_US&refURL=http%3A%2F%2Fknowledgebase.paloaltonetworks.com%2FKCSArticleDetail