$projectFiles = Get-ChildItem -Path "C:\TFS Fideuram\TP_SEI_Project" -Filter "*.csproj" -Recurse foreach ($projectFile in $projectFiles) { $content = Get-Content $projectFile.FullName -Raw if ($content -match '<TargetFrameworkVersion>v4\.[0-6]</TargetFrameworkVersion>') { Write-Host "Updating $($projectFile.FullName)" $updatedContent = $content -replace '<TargetFrameworkVersion>v4\.[0-6]</TargetFrameworkVersion>', '<TargetFrameworkVersion>v4.8</TargetFrameworkVersion>' Set-Content -Path $projectFile.FullName -Value $updatedContent -NoNewline } }