By default, Windows Update will only run in Internet Explorer when run on Windows XP. (Windows Update has its own Control Panel Applet on Windows 7). If the Block Other Requests setting for Internet Explorer is enabled in Catalyst, Windows Update will fail to run properly on Windows XP. To enable Windows Update to function, a specific Catalyst rule must be created to enable Windows Update in Internet Explorer in this scenario.
This document details the steps to enable Windows Update to always open in Internet Explorer while the Block Other Request setting is enabled for Internet Explorer.
Settings that Cause this Issue
If any browser other than Internet Explorer is set as the Default Browser …
… and Block Other Requests is enabled in Internet Explorer, then Windows Update will fail to run properly until a rule is created for Windows Update.
Creating the rule
This section will detail the process of creating a Catalyst rule and then saving it locally so Catalyst will open Windows Update in Internet Explorer.
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