Adobe Flash Player download fails through proxy
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Adobe Flash Player download fails through proxy


Article ID: 165338


Updated On:


ProxySG Software - SGOS


Adobe applications downloaded from use the user-agent ="Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)", which looks similar to a legitimate browser request; however, it is not and the download request gets stuck in authentication loop through the proxy. The application doing the download does not support authentication and this can cause the proxy to get into an authentication loop where the download application sends download requests and the proxy requests authentication for each of them.



Bypass authentication for this user-agent string for the domain by using the following CPL in the proxy.

  1. Launch and log into the Management Console on your ProxySG.  The URL for the Management Console is https://<ip.address.of.proxysg>:8082/ .
  2. Click Configuration tab > Policy > Policy files > Policy files tab. 
  3. In the Install policy section, select Install Local File from: Text Editor
  4. Click Install.
    If this is a new proxy deployment, your local policy may be blank. 
    If this is an established proxy with local policy, scroll down to the bottom of the data contained in the text editor.
  5. Copy and paste the following policy text:

    request.header.User-Agent="Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)" url.domain="" authenticate(no)

  6. Click Install.
  7. Click OK.
  8. Click Close
  9. Click Apply
    The new policy is installed.