If your website is running on https using SSL for security purposes, sometimes Internet Explorer can not download attachments.  This is because of a cache security policy with tomcat, and this can be disabled to fix the downloads.  You may receive error, "internet explorer was not able to open this internet site. the requested site is either unavailable or cannot be found. Please try again later."

This happens because, by default Internet Explorer will not create a cache file (that it needs while downloading) while using SSL. 

Other web browsers handle this operation differently, so the downloads may still work in Firefox.  Tomcat server can be instructed to specifically tell internet explorer "It's okay" to create the cache files it needs.

 

1.  Locate the tomcat instillation directory (default is C:\Program Files\GroupLink\everything HelpDesk\tomcat)

2.  Navigate to  Tomcat's configuration directory (tomcat\conf)

3.  Edit the file  context.xml with a text editor.

4.  Under the <Context> tag, and before the </Context> tag, insert the following code:

 <Valve className="org.apache.catalina.authenticator.BasicAuthenticator"  disableProxyCaching="false" />

5.  Restart the Tomcat service (latest versions name this GLtomcat, older versions name this Apache Tomcat).  If you're having trouble with this step, simply restart your server.