This PowerShell script will scan all projects in a given solution for specific assembly and output the project name + assembly version when found. This is intended to be used to locate where a rogue assembly may be coming from in your running environment and get the version aligned with the rest of the system.

Find-ProjectAssemblyVersions.ps1

$searchPath = "C:\my_repo\src"
$assemblyName = "Sitecore.Horizon.Integration"
$versionPathMap = @{}

$files = Get-ChildItem -Path $searchPath -Recurse |
    Where-Object { $_.Name -eq "$assemblyName.dll" }
 
foreach ($file in $files) {
    $versionPathMap.Add($file.FullName, [Reflection.AssemblyName]::GetAssemblyName($file.FullName).Version)
}

foreach ($key in $versionPathMap.Keys) {
  Write-Host "$key - $($versionPathMap[$key])"
}