SynergySky: updating calendar with OBTP

In the SynergySky Join Version 2.5 there is a preview feature that allows the calendar invite to be updated after the meeting invite has been sent out, for this to work additional permissions need to b configured in Exchange which allows the meeting organiser to update the meeting after the invite has been sent out otherwise the organiser will receive the following error:

Scenario:
User books meeting inviting Microsoft S4B Client and Cisco Video Endpoint (DX80). Calendar does not get updated as permissions not set in Exchange. Exchange Version used: 2016

The following power shell permissions applied to the Exchange will give users the right permissions needed to perform this action

This will give exchange service account ‘Editor’ access to be able to update the calendar appointment with dial in information:

Add-MailboxFolderPermission -Identity joe.microsoft@alictrify.com:\Calendar -User administrator@alictrify.com -AccessRights Editor

The service account also needs an AD user object permission: ‘sendas’ for each user to send a updated invite to all recipients –

Add-ADPermission “Joe Microsoft” -User alictrify\administrator -Extendedrights “Send As”

< this was previously implicitly included in the Exchange server “Full Mailbox Access” permission or added in Exchange Online as part of the Add-RecipientPermission

Now when you send a invite you will not receive a failure email but rather a update in the calendar as follows:

When the time for the meeting comes you will see OBTP appear on screen:

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SynergySky error 1001:InstallUtilLib.dll

When installing the SynergySky application, i get the following error and the install rolls back:

As Per the Installation Guide it recommends installing Microsoft .NET 4.5.1 Framework.  It works with Microsoft .NET Framework 4.6.2 (Offline Installer) which could be found here