Cisco AnyConnect error: The file ‘Manifest Tool.exe’ is not marked for installation

28. September 2015 Cisco ASA 4,655
The error: “The file ‘Manifest Tool.exe’ is not marked for installation” occurs during installation of Cisco AnyConnect. Usually, this is the result of a failed upgrade.

Steps for solution:
First, uninstall any versions of Cisco AnyConnect that are currently installed. Then edit the registry key:

  1. Click Start and type “regedit” in the box.
  2. A dialogue box will pop up with the following text: Do you want to allow the following program to make changes to this computer? Click Yes.
  3. Browse to the following location: HKEY_CLASSES_ROOT\Installer\Products\
  4. Within the Products folder, locate and delete the registry key which contains product information for Cisco AnyConnect.
    • Each registry key within Products is an alphanumeric string. Select the first key and look on the right side for ProductName REG_SZ Cisco AnyConnect. Go through each key in the Products folder until you find the one for Cisco AnyConnect.
    • For example, the registry key for Cisco AnyConnect is named {6A851B6266619384C8D3CC2085396FF6}
    • Your version of Cisco AnyConnect might have a different name for this registry key.
    • We recommend making a backup of this registry key before deleting it.
  5. Close the registry editor.
  6. Install Cisco AnyConnect.

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