Exchange Server Quarterly Servicing updates, changes, zero day vulnerability fixes released

Yesterday we released Exchange Server quarterly servicing Cumulative Updates (for Exchange 2013/2016/2019) and Rollup Update (for Exchange 2010) for all supported versions of Exchange Server. Few highlights were, These updates have the fixes to mitigate the zero day and related vulnerabilities. An architectural change to EWS Push notification authentication – this change addresses the EWS…

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Debug EWS subscription error – You have exceeded the available subscriptions for your account

Recently i was investigating an issue reported by an app developer. They created a custom EWS (Exchange Web Services) application which tries to open streaming subscription to Exchange Server 2013 using EWS. It worked fine for a while and later they noticed the following error: You have exceeded the available subscriptions for your account. Remove…

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Download Exchange Server 2016 CU 7, Exchange Server 2013 CU 18

On September 19, 2017 we released the Cumulative update 7 for Microsoft Exchange Server 2016 and Cumulative update 18 for Microsoft Exchange Server 2013 as well. Exchange Server 2016 CU 7:Several nonsecurity issues are fixed in this cumulative update or a later cumulative update for Exchange Server 2016.  So the Exchange Server 2016 CU 7…

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