Resolving Dell Data Protection Encryption Uninstallation Error - Decrypt Agent TEMP Registry Key
Summary: This article describes the solution to a common error message received during the Dell Data Protection removal process affecting users upgrading to Windows 10.
Symptoms
Affected Products:
- Dell Data Protection | Encryption
Dell Data Protection | Encryption Uninstallation Error: "Decrypt agent TEMP Registry Key"
Some users have reported receiving an error stating: -- MSI_LOGGING -- *** CMsiInstallDecryptAgentHelper – Error opening Decrypt Agent TEMP registry key during the standard Dell Data Protection | Encryption uninstallation process
Example of message received during the removal process:

Cause
A Microsoft Security fix which resolves a vulnerability that could potentially allow elevation of privilege is the cause of this. If the Windows Installer service runs custom action scripts in an unsafe way and could allow an attacker to have full administrative rights according to: https://support.microsoft.com/en-us/kb/3072630
Resolution
- Back up the Registry before proceeding, reference How to Back Up and Restore the Registry in Windows
.
- Editing the Registry can cause the computer to become unresponsive on the next reboot.
- Contact Dell Data Security International Support Phone Numbers for assistance if you have concerns about performing this step.
Temporarily undo the security fix and then reenable after the Dell Data Protection removal is complete.
- Click Start, click Run, type regedit in the Open box, and then click OK.
- Locate and then click the following subkey in the registry:
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\InstallerNote: If this subkey does not exist, create it. - On the Edit menu, select New, and then click
DWORD Value. - For the DWORD name, type
RemappedElevatedProxiesPolicy, and then press Enter - Right-click
RemappedElevatedProxiesPolicy, and then click Modify. - In the Value data box, type
1, and then click OK. - Install the required application.
- After the application installs successfully, reset the
RemappedElevatedProxiesPolicyDWORD value to0to reenable the security fix for KB 3072630.
Source: https://support.microsoft.com/en-us/kb/3072630
To contact support, reference Dell Data Security International Support Phone Numbers.
Go to TechDirect to generate a technical support request online.
For additional insights and resources, join the Dell Security Community Forum.