Recently I’d carried out a Proof-of-Concept (PoC) for a customer on a SMART Lync Room System (LRS) to replaced their existing Video Conferencing solution – which isn’t too “Unified”, several limitation when it comes to Group Meetings and worse off is the user experience was horrible (and that’s why I’d the opportunity to go in)

The PoC was straight forward where the LRS will be connected to Microsoft Office 365 account where it can be easily configured and demonstrated; simply just an account for the LRS which has Exchange & Lync license assigned would get the entire LRS up and running. However, it wasn’t as smooth as it seems as when the Exchange Calendar doesn’t appear and the “Round Loading Screen” keeps rotating.

Thanks to a good friend from the Lync/Skype for Business MVP @OliverMoazzezi, he’d pointed out that there was a bug within LRS and a temporary workaround can easily solve this issue:

  1. Reboot the System into Admin Mode
  2. Select the Network Connection Configuration. At the Network Connections Windows, activated the Address Bar and type Regedit which opens up the Registry Editor
  3. Maneuver to HKLM\Software\Microsoft\Office\15.0\Lync > Right Click on the Key (icon shows as folder) > Permissions.. > Click on Add > type in Everyone > Grant Full Control                LRS-Registry-Permissions
  4. Reboot the System and the Exchange Calendar will appear

For On-Premise LRS User, you may refer to www.Exchange2010.com for additional steps to resolve the similar issue.