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June 3rd, 2025 16:27
Folder permissions reduced in 'Program Data\Dell' folder and SupportAssist and Dell Command Update 5.5 won't install
I have been having problems with DCU 5.5 install and now more widely...
Dell issued DCU 5.5 without bundling .NET 8 or checking that the necessary .NET 8 desktop service was installed. This then caused a problem: "DellClientManagementService is deleted when the Dell Command | Update v5.4 to Dell Command | Update v5.5 upgrade takes place when .NET 8 is not installed on the client (Upgrade & Fresh Install)". I also saw that my reliability history declined after this and noticed a new package Dell Core Services (200Mbish) on my machine which is not on the XPS15 drivers page - so I deleted it as extra Dell software has caused reliability issues in the past. a readme.txt file within DCU5.5 (but not the web page) says "This software build includes the installation of Dell Core Services and Dell Command | Update"...... so perhaps I should have left it...
I am now unable to install SupportAssist or DCU 5.*
Dell helpdesk initially suggested I delete ALL Dell apps (including powerManager, Dell Vault etc), and a significant problem seems to be that folder permissions in 'C:\Program Data\Dell' folder has now been restricted to Authenticated Users (by DCU failure or Dell Core Services uninstall?), which limits it to read and execute, read, and list folder contents, so software installs can't create new folders and write files . Within the Dell folder there are a number of folders that have full control(SYSTEM, Administrators permissions etc), but some that are ONLY 'Authenticated Users': D3, DTP.DataManager.SubAgent, DTP.Diagnostics. SubAgent, DTP.Instrumentation.SubAgent, ePSA, MyDell Notification Manger, orca, OS Recovery Tool.
Dell are now suggesting I reinstall the OS, but I have 198 apps installed and am trying to avoid that - some like Photoshop are a pain to re-install and configure... and everything else but Dell apps seems to be working.
The machine is an XPS15 9520 on Win11 Pro. Is it an idea to rename the C:\ProgramData \Dell folder and try again and see if SupportAssist or DCU installs Ok and sets up the folder and sub-folders correctly, or could that do more damage?
Any other ideas please what I can do?
I have .NET 8 and .NET 9 installed now, and also some older versions some of which have expired suport like 3.1.32 and 6.0.36 - should I delete the old ones?
Thanks for any help!!