“Cumulative Update 20” appears in Programs and Features after you install Exchange Server 2013 Cumulative Update 22

Applies to: Exchange Server 2013Exchange Server 2013 Standard EditionExchange Server 2013 Enterprise


After you successfully install Cumulative Update 22 for Microsoft Exchange Server 2013, the Programs and Features item in Control Panel lists the installation as “Exchange Server 2013 Cumulative Update 20.”


This issue occurs because Exchange Server Setup does not update the version string in the registry correctly.


Follow the steps in this section carefully. Serious problems might occur if you modify the registry incorrectly. Before you modify it, back up the registry for restoration in case problems occur.

To fix this issue, change the registry key for the update display name. To do this, follow these steps:

  1. On the Start menu, click Run, type regedit in the Open box, and then click OK.
  2. Locate the following subkey:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Microsoft Exchange v15

  3. In the details pane, locate and double-click the DisplayName item.
  4. In the Value data box, change the string to the following value:

    Microsoft Exchange Server 2013 Cumulative Update 22

  5. Click OK to save the change.