Package Server is configured to publish HTTP(s) codebases, but could not access its own Web site.

Products

• IT Management Suite

Issue/Introduction

Package Server cannot access it's own web site.

Cause

Different causes possible

Resolution

1. In the Symantec Management Console, on the Settings menu, click Notification Server > Site Server Settings.
2. In the left pane, expand Site Management > Site Servers, expand your new site server and then click Communication Profile.
3. In the right pane, click the name of the communication profile. make sure HTTPS is selected. 
4. Click on "Edit" in front of "SSL certificates are defined for current profile"  and make sure proper certificate(s) are there.
5. Make sure all TLS options are selected. TLS1.0, TLS 1.1 and TLS 1.2.

Moreover, make sure to:

1. Grant the following permissions to "Authenticated Users" group under the "<installdrive>:\Program Files\Altiris\Altiris Agent\Package Server Agent" folder (as referenced under https://knowledge.broadcom.com/external/article?articleNumber=172043):

• Read and Execute
• List Folder Contents
• Read

In one particular case this error was caused by the World Wide Web service not being able to start.  Starting it resolved the error.