If you’ve just migrated your mailbox to Exchange 2013 and you’re having issues with slowness in Outlook (opening Outlook, reading e-mails, etc.) you may need to adjust something called TcpAckFrequency in the registry. The default TcpAckFrequency parameter in Windows is 200ms, which does not always work well with Exchange 2013. Luckily, there is a very…

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