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Event ID 51 — Client Access License Assignment

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Client access licenses (CALs) for Windows EBS must be assigned to user accounts or networked devices for your users to log on to the Windows EBS network. If you assign a CAL to a user account, the user can log on to Windows EBS from any networked device.

Event Details

Product: Windows Operating System
ID: 51
Source: Microsoft-Windows-Windows Server Solutions Client Access Licensing
Version: 6.0
Symbolic Name: LIC_LICTOOL_EXCEEDED_USAGE_INSTALLED_LICENSES
Message: A %1 CAL was assigned to %2 object %3. A temporary CAL was assigned because all installed CALs of that type are already assigned.

Resolve

Reassign Client Access Licenses

To resolve this issue, you can reassign a CAL from a user account or device, or you can purchase and install a new CAL pack.

To reassign a CAL, you must unassign a CAL from a user account or device and then assign the CAL to a new user account or device.

To unassign a CAL from a user account or device, follow the procedures listed in "Unassign a Client Access License" at the Microsoft Web site (https://go.microsoft.com/fwlink/?LinkId=136788).

To assign a CAL to a user account or device, follow the procedures listed in "Assign a Client Access License" at the Microsoft Web site (https://go.microsoft.com/fwlink/?LinkId=136791).

If you need more CALs, you can purchase and install additional CAL packs. For more information about purchasing additional CAL packs, see "How to Buy" at the Microsoft Web site (https://go.microsoft.com/fwlink/?LinkId=136766).

To install an additional CAL pack

  1. Click Start, click All Programs, click Windows Essential Business Server, and then click Windows Essential Business Server Administration Console.
  2. Click the Licenses tab, and then in the tasks pane, click Install CAL Packs to start the Install CAL Packs Wizard.
  3. Install one or more CAL packs by following the instructions in the wizard.
  4. Return to the Administration Console, click the Licenses tab, and then click License Management.
  5. Confirm that the licenses are added by checking the entries in the Edition and Total columns.
  6. View the Status column to see if your CALs are in compliance with the licensing terms for Windows EBS.

For more information about CALs, see "Client Access Licenses" at the Microsoft Web site (https://go.microsoft.com/fwlink/?LinkID=108930).

Verify

You must use an account that is in the Domain Admins group to perform this procedure.

You can monitor the assignment of CALs in the Administration Console.

To view CAL assignments

  1. Click Start, click All Programs, click Windows Essential Business Server, and then click Windows Essential Business Server Administration Console.

  2. Click the Licenses tab.

  3. Click User Licenses. 

    The results view shows the user accounts that are set up in Active Directory Domain Services (AD DS) and the CALs for Windows EBS that are assigned to them.

    Note: The Administrator account is automatically assigned a Premium Edition CAL in all editions of Windows EBS. You cannot unassign this CAL.

  4. Click Device Licenses. 

    The results view shows computers and devices in AD DS and the CALs for Windows EBS that are assigned to them.

Client Access License Assignment

Windows EBS