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Windows 7 Thread, OWA being blocked by BHO add ons policy in Technical; Hi all We've just implemented a GPO to block all BHOs in IE, you know the annoying toolbar extensions etc. ...
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    TheBinMan's Avatar
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    OWA being blocked by BHO add ons policy

    Hi all

    We've just implemented a GPO to block all BHOs in IE, you know the annoying toolbar extensions etc. This was mainly because Adobe reader XI was causing problems and crashing IE9 (and 8) , also staff were adding all sorts of toolbar extensions which were messing up their computers.
    We have used the GPO to Deny all Add-ons except ones in the Allow list. In the Allow list we have added the CLSID of Flash and Java, and all seems to be working - except it is now blocking OWA from opening.
    Ive had a search around MS and t'internet and cant find any specific CLSID's for OWA, though I suspect it might be something else?

    Anyone else had any experience of this or ideas where to look?
    Last edited by TheBinMan; 11th April 2013 at 03:10 PM.

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    What happens when you hit the OWA site?

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    TheBinMan's Avatar
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    We get a message saying you need to enable ActiveX controls as they have been block by Administrator - however, I can't find specifically which ones are for OWA.

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    Quote Originally Posted by TheBinMan View Post
    I can't find specifically which ones are for OWA.
    Does it work if you add the CLSID for Silverlight to the list?

    Code:
    {DFEAF541-F3E1-4C24-ACAC-99C30715084A}
    Silverlight is used for attaching files in OWA.

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