Firefox & Exchange 2010 Critical Error

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After updating Firefox today I encountered the following error when trying to work with the Exchange Control Panel in Exchange 2010 RTM:


Going by the message, “Permission denied for .. to get property Windows.frameElement from”, it looks like a cross-site frame protection issue. I don’t know if the update is responsible for this (Firefox 3.6.8) or this is also the behaviour of earlier Firefox versions. I checked it against IE and that has no issue.

So far for multi-browser support.

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About Michel de Rooij

Michel de Rooij, with over 25 years of mixed consulting and automation experience with Exchange and related technologies, is a consultant for Rapid Circle. He assists organizations in their journey to and using Microsoft 365, primarily focusing on Exchange and associated technologies and automating processes using PowerShell or Graph. Michel's authorship of several Exchange books and role in the Office 365 for IT Pros author team are a testament to his knowledge. Besides writing for Practical365.com, he maintains a blog on eightwone.com with supporting scripts on GitHub. Michel has been a Microsoft MVP since 2013.

2 thoughts on “Firefox & Exchange 2010 Critical Error”

  2. I’m having the same thing happen to me in Firefox (I’m using 9.0.1) where I get the following error message:

    Error: Permission denied for to get property Window.frameElement

    Kind of annoyed because it keeps happening even when I close the window. It comes back again! Anything fixed on your end?

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