Questions[silent](server)

I initially deployed Python 3.8.1 in our org (through WSUS Package Publisher if relevant) using the MSI's found here. I installed these MSI's using WSUS Package Publisher with the following command for each MSI:

msiexec.exe /i core.msi /qn /norestart ALLUSERS=1

Unfortunately for some reason this was causing a number of issues for me which all seemed to point to the ALLUSERS=1 being ignored, possibly due to lack of elevation of the installer (not appearing in the Installed Applications list, not appearing through the py -0 list). Frustratingly these were all accidentally deployed to everyone before we realised these issues.

To clean up, I now need to uninstall these MSI's. Right clicking these MSI's on the affected machine and clicking "Uninstall" works - I get presented a "Are you sure you want to uninstall?" prompt, followed by elevation request, and then it uninstalls as expected.

However, as I'm trying to do this silently so that I can roll this out. This is the command I'm trying to run through an elevated shell:

 msiexec.exe /x .\core.msi /qn

Nothing happens. I can see in Task Manager that msiexec.exe is running with no activity, so my feeling is that it's reaching the "Are you sure?" prompt and getting stuck on that prompt.

How do I bypass this prompt during silent uninstallation?

I'm trying to robocopy some files silently. Right now, I have robocopy putting everything into a log file, which is fine, but after it finished, Log File: C:\<logfiledestination> is printed. My command looks like this:

robocopy source destination /mir /xd .svn /log:log.txt /np >nul 2>&1.

From searching online, I thought that >nul 2>&1 would have prevented anything from showing up. I'm extremely new to the windows command line, so if I'm doing something wrong, please let me know!

Edit: I had a phantom half-sentence in there that I missed. Fixed now though.

Deploy a MSI using Group Policy. Sounds easy right?

This MSI (CAD Client Configuration.msi) prompts for the IP address of our UCCX server. Most MSI's I have dealt with I can install silently uisng /q but this one not so much.

I can't assign it to the computer object becuase the prompt for the IP address is never visible.

I can't assignt it to the user object becuase they don't have the credintials to run to program.

I need to install this on 250 computers within the next 5 hours. Any advice??

The challenges set by the ClearCase 7.1 installation process are multiple:

• The installation for Unix has been changed (no more './install_server' script): a unified GUI-based Java tool is used, both for Windows and Unix: the Installation Manager (IM), based on a XML configuration file: the "response file".
• If anything goes wrong, IM will erase all the installation, leaving (almost) nothing
• no Gui means silent install, but it also means you cannot record easily a response file.
• no Internet means, IM will not be able to detect updates and load them for you.

The documentation does not cover completely this scenario.
My answer below will be there (as a Community Wiki) to record what I have experienced so far regarding this process.

What is the command line to silently install an MSI file?