Install RSAT for Windows Server 2019 and Windows 10 with PowerShell

Windows Server 2019

Run the cmdlet below with the -whatif switch to check what will is allready installed and will be installed:

Install-WindowsFeature -IncludeAllSubFeature RSAT -WhatIf
Get-WindowsFeature -Name RSAT* | where 'install state' -NE Installed

To install all the tools run the cmdlet below:

Install-WindowsFeature -IncludeAllSubFeature RSAT
Or
Install-WindowsFeature -Name RSAT -IncludeAllSubFeature -IncludeManagementTools

Windows10

Check whether RSAT components are installed on your computer:

Get-WindowsCapability -Name RSAT* -Online

View the status of installed RSAT components in a easy view:

Get-WindowsCapability -Name RSAT* -Online | Select-Object -Property DisplayName, State

You can use the Add-WindowsCapacity cmdlet to install these Windows features.
To install a specific RSAT tool, such as AD management tools (including the ADUC console), run the command:

Add-WindowsCapability –online –Name “Rsat.ActiveDirectory.DS-LDS.Tools~~~~0.0.1.0”

To install the DNS management console only, run:

Add-WindowsCapability –online –Name “Rsat.Dns.Tools~~~~0.0.1.0”

And all the other single install options:

Add-WindowsCapability -Online -Name Rsat.FileServices.Tools~~~~0.0.1.0
Add-WindowsCapability -Online -Name Rsat.GroupPolicy.Management.Tools~~~~0.0.1.0
Add-WindowsCapability -Online -Name Rsat.IPAM.Client.Tools~~~~0.0.1.0
Add-WindowsCapability -Online -Name Rsat.LLDP.Tools~~~~0.0.1.0
Add-WindowsCapability -Online -Name Rsat.NetworkController.Tools~~~~0.0.1.0
Add-WindowsCapability -Online -Name Rsat.NetworkLoadBalancing.Tools~~~~0.0.1.0
Add-WindowsCapability -Online -Name Rsat.BitLocker.Recovery.Tools~~~~0.0.1.0
Add-WindowsCapability -Online -Name Rsat.CertificateServices.Tools~~~~0.0.1.0
Add-WindowsCapability -Online -Name Rsat.DHCP.Tools~~~~0.0.1.0
Add-WindowsCapability -Online -Name Rsat.FailoverCluster.Management.Tools~~~~0.0.1.0
Add-WindowsCapability -Online -Name Rsat.RemoteAccess.Management.Tools~~~~0.0.1.0
Add-WindowsCapability -Online -Name Rsat.RemoteDesktop.Services.Tools~~~~0.0.1.0
Add-WindowsCapability -Online -Name Rsat.ServerManager.Tools~~~~0.0.1.0
Add-WindowsCapability -Online -Name Rsat.Shielded.VM.Tools~~~~0.0.1.0
Add-WindowsCapability -Online -Name Rsat.StorageMigrationService.Management.Tools~~~~0.0.1.0
Add-WindowsCapability -Online -Name Rsat.StorageReplica.Tools~~~~0.0.1.0
Add-WindowsCapability -Online -Name Rsat.SystemInsights.Management.Tools~~~~0.0.1.0
Add-WindowsCapability -Online -Name Rsat.VolumeActivation.Tools~~~~0.0.1.0
Add-WindowsCapability -Online -Name Rsat.WSUS.Tools~~~~0.0.1.0

To install all the available RSAT tools at once, run:

Get-WindowsCapability -Name RSAT* -Online | Add-WindowsCapability –Online

To install only disabled RSAT components, run:

Get-WindowsCapability -Online |? {$_.Name -like "*RSAT*" -and $_.State -eq "NotPresent"} | Add-WindowsCapability -Online

If installing RSAT you encounter an error Add-WindowsCapability failed.
Error code = 0x800f0954, most likely your computer is configured to receive updates from the internal WSUS or SUP server.

To install RSAT components, you need to temporarily disable the update from the WSUS server in the registry.
Open the registry key HKLM\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU and change the UseWUServer to 0 and restart the Update Service.

Or run this script:

$currentWU = Get-ItemProperty -Path "HKLM:\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU" -Name "UseWUServer" | select -ExpandProperty UseWUServer
Set-ItemProperty -Path "HKLM:\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU" -Name "UseWUServer" -Value 0            
Restart-Service wuauserv            
Get-WindowsCapability -Name RSAT* -Online | Add-WindowsCapability –Online            
Set-ItemProperty -Path "HKLM:\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU" -Name "UseWUServer" -Value $currentWU
Restart-Service wuauserv

error code: dlg_flags_sec_cert_cn_invalid - The hostname in the website's certificate differs from the website you are trying to visit

This was one error that I couldn't find a definitive answer for after searching the error:

error code: dlg_flags_sec_cert_cn_invalid - The hostname in the website's certificate differs from the website you are trying to visit

Long story short, in my case this came down to the "Common name" or "CN" in the certificate.
I had created the cert with a CN and some SAN names like so:

CN=application.domain.lan

SAN=application.domain.lan
SAN=application
SAN=servername.domain.lan
SAN=servername
SAN=applicationalias.domain.lan
SAN=applicationalias

Internet Explorer 11, Edge, Chrome and Firefox all tripped over the Common name.
If I typed in the browser: "https://application" the error did not appear. So my conclusion is that the webserver doesn't interpret the domain suffix stated in the common name.

So I recreated the certificate with the Common name: "application".
Binded it in IIS, iisrestart and reloaded the site in IE and behold no more errors.

Connect to all Azure & Office 365 services in one PowerShell window

We've all been there, when running some commandlets from Exchange online suddenly you need to switch to Sharepoint, AzureAD or Skype Online.

With this handy script you can connect to all services at once.
I personally always use the Exchange Online PowerShell module for this, as it will be updated when starting it so you always have the latest commandlets for Exchange Online.

There are some requirements that have to be met before hand:

• .Net 4.5
• Windows Management Framework 3.0 or 4.0
• 64-bit version of Windows OS

Installed modules:

• Azure Active Directory V2 module
• SharePoint Online module
• Skype for Business Online module

Execution policy needs to be at least "Remote Signed"

In the past I have created a script that installs all these requirements at once:

https://vanbrenk.blogspot.com/2018/03/install-office365-requirements-with.html

I try to keep this updated, so if anything fails leave me a comment.

Then you can run the lines below and connect to all the services in one PowerShell window.
Mind you, this is all for MFA enabled accounts.

# Azure Active Directory            
Connect-MsolService            
# SharePoint Online            
Connect-SPOService -Url https://domain-admin.sharepoint.com            
# Skype for Business Online            
Import-Module SkypeOnlineConnector            
$sfboSession = New-CsOnlineSession -UserName "username@domain.com" -OverrideAdminDomain domain.onmicrosoft.com            
Import-PSSession $sfboSession            
# Exchange Online            
Connect-Exopssession -UserPrincipalName username@domain.com            
# Microsoft Teams            
Connect-MicrosoftTeams            
# AzureAD            
Connect-AzureAD            
# Intune            
Connect-MSGraph