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vSphere 5 - Can not power on a VM Go to the VM cluster, right click then select Edit Settings. Click on vSphere HA. You will then see Admission Control and Admission Control Policy.   Admission Control is either set to Enable or Disable. If it’s set to Enable you will not be able to power on a vm if they are not enough resources for HA according to your Admission Control Policy. You need enough a available resources, memory, cpu, and hard disk, to vMotion   your vm from a failed host. If you have 3 hosts and your policy is set to “Host Failures the cluster tolerates: 1” the your surviving hosts must have enough resources to power up and run the vm’s from the failed host. If you do not have enough resources and you Admission Control is set to “Enable: Disallow VM power on operations that violate availability constraints” you will not be able to power on any new vm’s. You will be able to create the new vm’s.

Here is the checklist from Microsoft: http://technet.microsoft.com/en-us/library/ff630915(v=exchg.141).aspx Prerequisites: ·          Windows Server 2008 R2 ·          .Net 3.5.1 Framework ·          IIS 7.0 ·          .Net 4.5 ·          Desktop Experience ·          Microsoft C++ 2008 Redistributable 64-bit (Include w/UCMA Managed API, Core Runtime x64) ·          Microsoft Unified Communications Managed API, Core Runtime x64 ·          Microsoft Server Speech Platform Runtime (x64) ·          Windows PowerShell 2.0 and WinRM 2.0 for Windows Server 2008 x64 Edition (KB968930) ·          UM Language Pack US In order to install UCMAruntime you will need to install .Net 4.5 and Desktop Experience first.

"Configuration section not allowed to be set below application" error when Authentication selected in iis7 on 3 exchange folders   "There was an error performing this operation." "Filename: \\?\C:\Program Files\Microsoft\Exchange Server\v14\ClientAccess\owa\web.config" "Error: Configuration section not allowed to be set below application." Exchange 2010 SP2, IIS 7 When accessing the Exchange or Exchweb folder and clicking on Authentication the error appears. Backup the file by right clicking, select copy, then right click in the folder and select paste. In the OWA web.config file remove ” <authentication mode="Windows" />”.

Right click on Windows Power Shell, click on “Run as Administrator” Browse to the Security Rollup file location, ie. c\Temp Type .\nameofsecurityrollupfile.msp Hit “Enter”

If you have run the .\MoveAllReplicas.ps1 -Server servername   -NewServer newservername but some time has passed before you try to uninstall the Exchange mailbox role then you may have to rerun the script. If you see this error: " The public folder database <name of pfdb> can not be deleted The public folder database contains folder replicas. Before deleting the public folder database, remove the folders or move the replicas to another public folder database." Additionally make sure the OAB is no longer publishing to the server web site you want to remove.

I have faced this problem twice now. Once on a new install which I was never able to fix and recently on an Exchange 2010 PS2 Rollup 4 uninstall. Problem: Lost connectivity to the Exchange Management Console and the Exchange Management Shell After uninstalling Microsoft Forefront Server Protection 2010 for Exchange Server I lost connect to the EMC and the EMS. After reviewing many Technet and Exchange forum fixes nothing worked. Solution: Uninstall the Hub Transport role on the Exchange server. After being unable to connect to do the troubleshooting I started to uninstall the Exchange server in pieces instead of trying to fix it. The main goal was to uninstall the Exchange 2010 server completely, upgrade the server hard drives and memory, and then reinstall new. After uninstalling the Client Access role I was still unable to connect the EMC and the EMS. Next I uninstalled the Hub Transport role. Viola I was able to connect to the Exchange Management Console and the E