Dell SupportAssist “Installation failed”; Cleanly Reinstall the Program

Dell SupportAssist is an OEM software that installs the latest device driver updates and does hardware diagnostic checks on your computer. The Dell SupportAssist installer may be glitchy on some computers, where the error “Installation failed” may occur when installing or updating Dell SupportAssist.

Installation failed

We were unable to install SupportAssist. Please reboot your PC and try again.

Resolution

To fix the  Dell SupportAssist “Installation failed” error, cleanly remove the app and install the latest version from Dell’s website.

Step 1: Uninstall Dell SupportAssist via Programs and Features

1. Open Control Panel → Programs and features.
2. Right-click “Dell SupportAssist” and choose Uninstall.
   
3. Similarly, uninstall Dell SupportAssist Agent, Dell SupportAssist Update Plugin, and Dell SupportAssist Remediation, if they’re listed.
4. Restart Windows.
5. Try to install the latest version of Dell SupportAssist. You can download it from SupportAssist for Home PCs | Dell USA.

If the installer doesn’t work, proceed to the next method.

Step 2: Use Program Install and Uninstall Troubleshooter

1. Download the Program Install and Uninstall Troubleshooter tool from Microsoft. It’s available from the Fix problems that block programs from being installed or removed Microsoft Support site. The direct download link for the tool is below:

   https://download.microsoft.com/download/7/E/9/7E9188C0-2511-4B01-8B4E-0A641EC2F600/MicrosoftProgram_Install_and_Uninstall.meta.diagcab

2. Launch the “Program Install and Uninstall Troubleshooter” tool.

   

3. Click Next.

   

4. Click “Uninstalling”
5. Select “Dell SupportAssist” from the list.

   

6. Click Yes, try uninstall.

   

If the troubleshooter tool doesn’t help, proceed to Step 3.

Step 3: Delete Dell SupportAssist Files and Services

1. Open an admin Command Prompt and run the following commands to delete the Dell SupportAssist services.

   SC.EXE DELETE DDVDataCollector

   SC.EXE DELETE DDVRulesProcessor

   SC.EXE DELETE DDVCollectorSvcApi

   SC.EXE DELETE SupportAssistAgent

   SC.EXE DELETE DellTechHub

   SC.EXE DELETE DellClientManagementService

   

   You should get the message DeleteService SUCCESS (or “OpenService FAILED 1060” which denotes the service no longer exists) for each command.

   The above steps uninstall the following Dell services:

   • Dell Data Vault Service API
   • Dell Data Vault Collector
   • Dell Data Vault Processor
   • Dell Client Management Service
   • Dell TechHub
   • Dell SupportAssist
2. Restart Windows and delete the following folders if they still exist:

   C:\ProgramData\SupportAssist
   C:\ProgramData\Dell\SARemediation
   C:\ProgramData\Dell\SupportAssist
   C:\ProgramData\Dell\SupportAssistHardwareDiagnosticsSubAgent
   C:\ProgramData\Dell\SupportAssistOsRecoverySubAgent
   C:\ProgramData\Dell\SupportAssistServiceSubAgent
   

See if you can install the latest Dell SupportAssist app.

If nothing helps, please register at the Dell Community Forums and make a new post. See also Solved: Re: Dell Support Assist Freezing or Crashing – Dell Community.