Watchguard blocking websites

I have a Watchguard firebox 700. In an attempt to allow users to access OWA, I setup http proxy to the server in the firewall. It workd fine, however, users could no longer visit some harmless, work related sites, or even download pdf files. They get a watchguard error message, so I know that it is the culprit. The funny thing is, I removed the http proxy and rebooted the firewall, but the restrictions are still there. Anything to do with Java, active x, pdf, is all blocked. I have searched all through the watchguard and cannot find where any rstrictions could be.
Any ideas?
Thanks
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ilguybobAsked:
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hstilesCommented:
What version of Watchguard software are you running?  The reason for this is that the http proxy has the option of only allowing safe content and much of the content in the websites you mention is falling foul of this.  You can either configure it properly or disable it.
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ilguybobAuthor Commented:
version: 6.20-B2372
I deleted the http proxy, but it still blocks some content. For example, if I click on a pdf download from HP, it gives me the page cannot be displayed. If I right click I can do a "save link as". Also, it will block java applets, such as link speed tests.
It has been acting goofy since I enanbled the http proxy.
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