Uninstalling MicroStation in Silent Mode

If you have the Setup.exe of MicroStation, simply use the -Uninstall -Quiet commands to uninstall MicroStation. For example,

C:\BentleyDownloads\MicroStation\Setup_MicroStationx64.exe -Uninstall -Quiet

If you don't have the Setup.exe, then use the following steps:

In Windows PowerShell, get the location of bootstrapper Setup.exe using the following command:
gci "HKLM:\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall" | foreach { gp $_.PSPath } | ? { $_ -match "MicroStation CONNECT Edition" } | select UninstallString

You will get the path, something like this:
```
UninstallString
---------------
"C:\ProgramData\Package Cache\{0c77a938-fe26-4e0c-8bc7-3f2064729d40}\Setup_MicroStationx64.exe"  /uninstall
```
Use the above path in the command to uninstall the product silently:
Start-Process "C:\ProgramData\Package Cache\{0c77a938-fe26-4e0c-8bc7-3f2064729d40}\Setup_MicroStationx64.exe" -ArgumentList "-Uninstall -Quiet" -Wait

Uninstalling Post-Install Components

To uninstall the post-install components such as Bentley DGN Index Service, Bentley DGN Preview Handler, and others, you will need their msiexec.exe and product GUID.

Get the product GUID using one of the following commands:
gci "HKLM:\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall" | foreach { gp $_.PSPath } | ? { $_ -match "ProductName" } | select UninstallString

or

gci "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall" | foreach { gp $_.PSPath } | ? { $_ -match "ProductName" } | select UninstallString

Where, ProductName is the name of post-install component, such as Bentley DGN Index Service.
You will get product GUID, something like this:
```
UninstallString
---------------
MsiExec.exe /X{2E873893-A883-4C06-8308-7B491D58F3D6}
```
Use the string from the above step in the following command:
Start-Process "MsiExec.exe" -ArgumentList "/X{2E873893-A883-4C06-8308-7B491D58F3D6} /quiet" -Wait