Hello,

I have this error code 9520 when I try to install Dell support assist on my Precision 3490 and the explanation are very "blurry" :

Installation failed with an unknown reason.

Wait for some time and then retry install again.

Is there anyone who can help me knowing that I have no trace of an existing installation and I have already followed these steps without success :

Step 1: Stopping Windows Services to Uninstall SupportAssist

Please stop the following services prior to uninstalling SupportAssist:

• Click Start and search for Services

• Under Services, right click on the following and click Stop

a) Dell Data Vault Collector

b) Dell Data Vault Processor

c) Dell Data Vault Service API

d) Dell Hardware Support

e) Dell SupportAssist

Step 2: Uninstalling SupportAssist

• Click Start and search for Control Panel

• Open Control Panel > select Programs > select Programs and Features

• Once in Programs and Features, right click on Dell SupportAssist and click Uninstall

Note: After successfully uninstalling SupportAssist, please reboot your computer

Watch this video for a quick walkthrough: https://dell.to/3xnLsQ5

Step 3: Reinstalling SupportAssist

• Click Download Now

• Run the executable file and follow the on-screen instructions to install SupportAssist

• You are now ready to launch the SupportAssist application

Note: We recommend using Google Chrome, Mozilla Firefox or the latest Microsoft Edge browser to download and run SupportAssist.

Watch this video for a quick walkthrough: https://youtu.be/bDYyGXHEe50

Step 4: Starting Windows Services After Installing SupportAssist

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SupportAssist for PCs

SupportAssist for PCs

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