Upgrading from v4 to v5 issues

PowerShell Universal
1 
Product: PowerShell Universal
Version: 4.5.5

Attempted to go through the upgrade process for v4 to v5. used psu.exe to migrate LiteDB to SQLite, no errors were given. Modified appsettings.json to point to new db file (sqlite). Uninstalled v4 msi. Attempted to run v5 msi but got the following error:

Major upgrade detected. Please uninstall the previous version of PowerShell Universal before proceeding.

Im unsure whats causing the issue since the server shows the app is not installed

2

been there before:
wmic product get name, IdentifyingNumber

copy GUID (IdentifyingNumber) of PSU app

msiexec /x {GUID}

3

Also encountered this problem when upgrading.

In the registry, navigate to

HKLM\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall

Find the entry for PowerShell Universal V4 and delete it.

I was then able to install V5.

4

thanks jscott! For some reason there was an entry for psu v4.2 even though the last version of v4 I had installed was v4.5.5