Network Perimeters & TCP Idle session settings for Outlook on Office 365

*Update . This issue no longer occurs now we’ve switched to MAPI/HTTPS for every client/server connection aside from Outlook 2007. RPC/HTTPS which is what was causing this problem is being put out to pasture in October 2017. https://support.microsoft.com/en-au/help/3201590/rpc-over-http-deprecated-in-office-365-on-october-31,-2017 If you’re using a version of Office greater than 2007 then the advice is as follows: A minimum…

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TCP Offloading/Chimney & RSS…What is it and should I disable it?

Having decided to start this blog to convey my experience with network analysis and troubleshooting, one subject instantly sprang to mind for my first post, TCP Chimney/Offloading. I get asked about this so often I have a ready email of advice around what it is, and what I (note not Microsoft, although I think our…

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