Abstract: You are using a MS Web Application Proxy as reverse proxy (and ADFS) and when a anonymous user try to join via SfB (=Skype for Business) Web App, he got the error message "Sorry that didn´t work". Additional to that an external mobile client (e.g. Skype for Business on iOS) could´t connect.
Abstract: Sometimes you need to change the hostnames inside the SSL certificate on the Exchange 2016 server or need to renew it. This can be done via GUI, however with the proper powershell commands this is often more faster. In that howto we will create a sign request, and import that the response on the primary server and later one the whole certificate on a 2nd Exchange server.
Abstract: If you run "Get-Mailbox –Monitoring" to get an overview about your existing Exchange 2016 monitoring mailboxes you might see a "has been corrupted or isn't compatible with Microsoft support requirements, and it's in an inconsistent state." error message and you wish to solve that.
Abstract: If you have a application (e.g. IIS .net Application) which need to speak with an SQL server, you might get the error "The client and server cannot communicate, because they do not possess a common algorithm" when you try to perform a SQL connection.
Abstract: When you try to open the OWA (Outlook Web Access) website via an Exchange 2016 Server with an user account which has the mailbox on an Exchange 2010 server you might get a "Something went wrong" with a CAS14WithNoWIA string in the URL.