Exchange / Outlook – Security Alert – “The security certificate was issued by a company you have not chosen to trust”
KB ID 0000454 Problem Out of the box Exchange 2007 and 2010 comes with a “Self Signed” digital certificate. That’s OK for getting you up and running but your Outlook clients may start to see the error below. Error: Security Alert Information you exchange with this site cannot be viewed or changed by others. However, there is a problem with the sites security certificate. The security certificate was issued by a...
Microsoft Lync Install Error “Prerequisite installation failed: Wmf2008R2”
KB ID 0000513 Problem Seen Installing Lync Server 2010 on Windows Server 2008 R2, during the “Setup or Remove Lync Server Components” phase of the Deployment Wizard. Error: Prerequisite installation failed: Wmf2008R2 Details Type: PreInstallFailed Solution Thankfully this is a know problem and Microsoft has addressed it with KB 2522454 1. Drop to command line and issue the following command: %systemroot%system32dism.exe...
Exchange – “This operation can only be performed by a manager of the group” Error
KB ID 0000603 Problem Seen On Exchange 2010 (SP1), when trying to add a user to a distribution group. Add-DistributionGroupMember Failed Error: You don’t have sufficient permissions. This operation can only be performed by a manager of the group. Solution 1. There a few reasons for this error, I’m assuming that there is no user set as the manager for this group? (Properties > Group Information > Managed By). In my...