For this post I wanted to preview a script that I am working on, one which will eventually need to go to Github instead of the Technet Gallery as that is end of life now. This script performs two functions. One is that it checks the dot net version installed on a server. Second, the script will install a newer version of .NET on the server that it is run on. Current specs are as follows:
Detection – Versions 4.5+
Installation – Version 4.7+
The script is currently being testing on Windows 2019 as this provides a restricted environment with little in terms of what can be installed for .NET. After this is complete, I will test this on Windows Server 2016 and Windows 2012 R2. The code is list below until I post it for greater public consumption.
Sample Run
Windows 2019, .NET 4.7.2 installed, choosing 4.8 to be installed:
After it installs, the script proceeds back to the main menu:
There are options to exit the script (’99’) as well as to reboot the server (’50’). Leave a comment below if you like it or maybe have a feature suggestion.
Complete Script
Belowis the code for the draft of the script. Feel free to copy and use in your environment. Remember to test as well prior to using this in production:
# Purpose - Validate current installed .NET and install newer .NET version
#
# Supported installs are .NEt 4.7, 4.71, 4.72 and 4.80
#
# Variables
$Ver = (Get-WMIObject win32_OperatingSystem).Version
$OSCheck = $false
$Choice = "None"
$Date = get-date -Format "MM.dd.yyyy-hh.mm-tt"
$CurrentPath = (Get-Item -Path ".\" -Verbose).FullName
$DownloadFolder = $CurrentPath
# Download version of Dot Net
# Clear Screen
cls
Function BITSCheck {
$Bits = Get-Module BitsTransfer
if ($Bits -eq $null) {
Write-Host "Importing the BITS module." -ForegroundColor cyan
try {
Import-Module BitsTransfer -erroraction STOP
} catch {
Write-Host "Server Management module could not be loaded." -ForegroundColor Red
}
}
} # End BITSCheck Function
Function Check-DotNetVersion {
# Formatting
Write-Host " "
Write-Host " "
$DotNetFound = $False
# .NET 4.8 or less check
$NETval = Get-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full" -Name "Release"
# Parse through most .NET possibilities:
If ($NETval.Release -gt "528049") {
Write-Host "Greater than .NET 4.8 is installed"
$DotNetFound = $True
}
If ($NETval.Release -eq "528049") {
Write-Host ".NET 4.8 is installed."
$DotNetFound = $True
}
If ($NETval.Release -eq "461814") {
Write-Host ".NET 4.7.2 is installed."
$DotNetFound = $True
}
If ($NETval.Release -eq "461310") {
Write-Host ".NET 4.7.1 is installed."
$DotNetFound = $True
}
If ($NETval.Release -eq "460805") {
Write-Host ".NET 4.7.0 is installed."
DotNetFound = $True
}
If ($NETval.Release -eq "394806") {
Write-Host ".NET 4.6.2 is installed."
$DotNetFound = $True
}
If ($NETval.Release -eq "394271") {
Write-Host ".NET 4.6.1 is installed."
$DotNetFound = $True
}
If ($NETval.Release -eq "393297") {
Write-Host ".NET 4.6.0 is installed."
$DotNetFound = $True
}
If ($NETval.Release -eq "379893") {
Write-Host ".NET 4.5.2 is installed."
$DotNetFound = $True
}
If ($NETval.Release -eq "378758") {
Write-Host ".NET 4.5.1 is installed."
$DotNetFound = $True
}
If ($NETval.Release -eq "378389") {
Write-Host ".NET 4.5.0 is installed"
$DotNetFound = $True
}
If ($NETval.Release -lt "378389") {
Write-Host "Version less than .NET 4.5.0 is installed."
$DotNetFound = $True
}
If ($DotNetFound -ne $True) {
Write-Host 'A valid .NET Version was not found - ' -NoNewLine
Write-host 'Failed' -ForegroundColor Red
}
$global:NetVersion = $NETVal
} # End Check-DotNetVersion
Function FileDownload {
Param ($sourcefile)
If (Test-path $DownloadFolder) {
Write-Host "Target folder $DownloadFolder exists." -ForegroundColor White
} Else {
New-Item $DownloadFolder -type Directory | Out-Null
}
BITSCheck
[string] $DownloadFile = $sourcefile.Substring($sourcefile.LastIndexOf("/") + 1)
If (Test-Path "$DownloadFolder\$DownloadFile"){
Write-Host "The file $DownloadFile already exists in the $DownloadFolder folder." -ForegroundColor Cyan
} Else {
Try {
Start-BitsTransfer -Source "$SourceFile" -Destination "$DownloadFolder\$DownloadFile" -ErrorAction STOP
} Catch {
Write-host "Failed to download file as BitsTransfer failed." -ForegroundColor Yellow
}
}
} # End FileDownload Function
Function Install-NET470 {
Write-Host " * Downloading .NET 4.7 now! *" -ForegroundColor Yellow
# Download .NET 4.7 installer
FileDownload "http://download.microsoft.com/download/D/D/3/DD35CC25-6E9C-484B-A746-C5BE0C923290/NDP47-KB3186497-x86-x64-AllOS-ENU.exe"
Set-Location $DownloadFolder
Write-Host " "
Write-Host "File: NDP47-KB3186497-x86-x64-AllOS-ENU.exe installing..." -NoNewLine
# New Code (Waits for completion)
.\NDP47-KB3186497-x86-x64-AllOS-ENU.exe /quiet /norestart | Out-Null
# Pause for completion
start-sleep 2
} # End of Function .NET 4.7.0 Install
Function Install-NET471 {
Write-Host " * Downloading .NET 4.7.1 now! *" -ForegroundColor Yellow
# Download .NET 4.7.1 installer
FileDownload "https://download.microsoft.com/download/9/E/6/9E63300C-0941-4B45-A0EC-0008F96DD480/NDP471-KB4033342-x86-x64-AllOS-ENU.exe"
Set-Location $DownloadFolder
Write-Host " "
Write-Host "File: NDP471-KB4033342-x86-x64-AllOS-ENU.exe installing..." -NoNewLine
# New Code (Waits for completion)
.\NDP471-KB4033342-x86-x64-AllOS-ENU.exe /quiet /norestart | Out-Null
# Pause for completion
start-sleep 2
} # End of Function .NET 4.7.1 Install
Function Install-NET472 {
Write-Host " * Downloading .NET 4.7.2 now! *" -ForegroundColor Yellow
# Download .NET 4.7.2 installer
FileDownload "https://download.microsoft.com/download/6/E/4/6E48E8AB-DC00-419E-9704-06DD46E5F81D/NDP472-KB4054530-x86-x64-AllOS-ENU.exe"
Set-Location $DownloadFolder
Write-Host " "
Write-Host "File: NDP472-KB4054530-x86-x64-AllOS-ENU.exe installing..." -NoNewLine
# New Code (Waits for completion)
.\NDP472-KB4054530-x86-x64-AllOS-ENU.exe /quiet /norestart | Out-Null
# Pause for completion
start-sleep 2
} # End of Function .NET 4.7.1 Install
Function Install-NET48 {
Write-Host " * Downloading .NET 4.8 now! *" -ForegroundColor Yellow
# Download .NET 4.8 installer
FileDownload "https://download.visualstudio.microsoft.com/download/pr/7afca223-55d2-470a-8edc-6a1739ae3252/abd170b4b0ec15ad0222a809b761a036/ndp48-x86-x64-allos-enu.exe"
Set-Location $DownloadFolder
Write-Host " "
Write-Host "File: ndp48-x86-x64-allos-enu.exe installing..." -NoNewLine
# New Code (Waits for completion)
.\Ndp48-x86-x64-allos-enu.exe /quiet /norestart | Out-Null
# Pause for completion
start-sleep 2
} # End of Function .NET 4.8.0 Install
Function Install-DotNetMain {
cls
Write-Host '**********************' -ForegroundColor White
Write-Host ' Install .NET Function' -ForegroundColor Magenta
Write-Host '**********************' -ForegroundColor White
Check-DotNetVersion
$DotNetVersion = ($global:NetVersion).release
$Valid = $False
$Decision = $Null
Write-Host ''
Do {
$Decision = Read-Host -Prompt "Which version of .Net do you want to install? [4.7, 4.7.1, 4.7.2 or 4.8? 'x' for main menu] "
If ($Decision -eq '4.7') {
If ($DotNetVersion -lt '460805') {
Install-NET470
$Valid = $True
Write-Host 'Please make sure to reboot your server now.' -ForegroundColor Yellow
} else {
Write-Host ''
Write-Host 'This version of .NET is too low for this server.' -ForegroundColor Yellow
$Valid = $True
}
}
If ($Decision -eq '4.7.1') {
If ($DotNetVersion -lt '461310') {
Install-NET471
$Valid = $True
Write-Host 'Please make sure to reboot your server now.' -ForegroundColor Yellow
} else {
Write-Host ''
Write-Host 'This version of .NET is too low for this server.' -ForegroundColor Yellow
$Valid = $True
}
}
If ($Decision -eq '4.7.2') {
If ($DotNetVersion -lt '461814') {
Install-NET472
$Valid = $True
Write-Host 'Please make sure to reboot your server now.' -ForegroundColor Yellow
} else {
Write-Host ''
Write-Host 'This version of .NET is too low for this server.' -ForegroundColor Yellow
$Valid = $True
}
}
If ($Decision -eq '4.8') {
If ($DotNetVersion -lt '528049') {
Install-NET48
$Valid = $True
Write-Host 'Please make sure to reboot your server now.' -ForegroundColor Yellow
} else {
Write-Host ''
Write-Host 'This version of .NET is too low for this server.' -ForegroundColor Yellow
$Valid = $True
}
}
If ($Decision -eq 'x') {
Write-Host 'Exiting .NET installation function ...' -ForegroundColor Yellow
$Valid = $True
}
If (!$Valid) {
Write-Host '';;write-host '';Write-Host ' Invalid selection. Please choose again.' -ForegroundColor Yellow;write-host '';write-host ''
}
} While ($Valid -ne $True)
Write-Host ' '
Write-Host 'Going back to main menu.' -ForegroundColor cyan
Write-Host ' '
Start-sleep 3
}
$Menu = {
Write-Host " ****************************" -ForegroundColor Cyan
Write-Host " .NET Checker and Installer " -ForegroundColor White
Write-Host " ****************************" -ForegroundColor Cyan
Write-Host " "
Write-Host " 1) Check .NET Version" -ForegroundColor White
Write-Host " 2) Install newer .NET version" -ForegroundColor White
Write-Host ''
Write-Host " 50) REBOOT" -ForegroundColor Yellow
Write-Host " 99) Exit" -ForegroundColor Red
Write-Host ''
Write-Host " Select an option.. [1, 2, 98 or 99]? " -ForegroundColor White -nonewline
}
Do {
If ($Choice -ne "None") {Write-Host "Last command: "$Choice -foregroundcolor Yellow}
Invoke-Command -ScriptBlock $Menu
$Choice = Read-Host
Switch ($Choice) {
1 { # Check .NET versions
cls
Check-DotNetVersion
}
2{ # Install newer .NET
Install-DotNetMain
}
50 { # Exit and restart
Stop-Transcript
restart-computer -computername localhost -force
}
99 {# Exit
If (($WasInstalled -eq $false) -and (Get-Module BitsTransfer)){
Write-Host "BitsTransfer: Removing..." -NoNewLine
Remove-Module BitsTransfer
Write-Host "`b`b`b`b`b`b`b`b`b`b`bremoved! " -ForegroundColor Green
}
Popd
Write-Host "Exiting..."
}
}
} While ($Choice -ne 99)
