# Unable to open PDF and PPT files using SSL and Internet Explorer

#### Still need help?

The Atlassian Community is here for you.

Platform notice: Server and Data Center only. This article only applies to Atlassian products on the server and data center platforms.

## Problem

Opening attachments in Firefox works, but in IE does not. The external application used to open the attachment (eg. Acrobat Reader or Microsoft Office) will report:

"There was an error opening this document. The file cannot be found."


## Cause

This problem is specific to Internet Explorer. IE normally downloads attachments into its "Temporary Internet Files" folder, however when the site is in HTTPS mode the attachments will not be downloaded. Causing an external application such as Adobe Acrobat to report the error message above.

## Workaround

Need to restrict everything to SSL?

If HTTP cannot be used for attachment download, edit <CONFLUENCE_INSTALLATION>/conf/server.xml and add the following line within the <Context ... /> element:

<Valve className="org.apache.catalina.authenticator.NonLoginAuthenticator"
disableProxyCaching="true" securePagesWithPragma="false" />