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AD FS with Office 365 Step by Step Install Guide
Since we are starting from the very beginning. The first thing you’ll have to do is sign into your Office 365 account and go into the Domains area. Click the Add a domain link to add your domain.
Enter the domain that you want to Federate and click the Check Domain button.
You will then be asked to confirm the domain details. If everything is correct, click Next.
Finally you be given instructions on how to create a TXT record in your Internet DNS. The TXT record is Microsoft’s way of verifying that you own the domain and creating this record does not impact any existing services. After you create the TXT record in DNS you must return to the Office 365 Administraton site and verify the domain by clicking the Verify button.
Install AD FS
Now that your domain has been added and verified, we can move on to installing AD FS in your local Active Directory. The big requirements for this step are:
- Your Active Directory Domain must be in Windows 2003 mixed or native mode.
- You must have a Windows Server 2008 or Windows Server 2008 R2 to install AD FS on.
You must first download AD FS 2.0 from:
When you launch the install program, click Next.
Accept the license and click Next.
On the Server Role screen, choose Federation Server and click Next.
The wizard will automatically install the required prerequisites. Click Next to begin the installation.
When the installation is complete, uncheck “Start the AD FS 2.0…..” and click the Finish button. The reason we are unchecking that box is IIS was installed as part of the prerequisites and we now need to use IIS to request a certificate.
Obtain a Certificate for use with AD FS
In this example, we’ll request a certifcate from a public certification authority. Unless you already have a certificate infrastructure deployed, it’s probably best to puchase a certificate instead of generating your own. Trust us on this one, just spend the money on a certificate, it will save you a lot of time.
On the server you just installed AD FS on, open IIS Manager and click on Server Certificates.
Then click on Create Certificate Request
In this example we’ll be requesting a wildcard certificate. A wildcard cerficate is not necessary, but we plan on using this same cerificate for Exchange rich coexistence. The important field is the Common Name field. In the image below, you can see it’s *.domain.com. In most cases (where you want external users on the Internet to be able to authenticate) Domain.com must be your external domain name. If you were are not requesting a wildcard cert the name would something like fs.domain.com, or adfs.domain.com.
On the next screen, ensure the Bit Length is at least 2048 and click Next.
Finally, specify a file name for the certificate request and click Finish.
You must now take the request to a public certification authority such as GoDaddy or Verisign. When the request has been processed, they will provide you with a Certificate.
Importing the Certificate
After the certificate request has been processed, you’ll need to import the certificate. To do that through IIS, you must go back to the Server Certificates and click Complete Certificate Request:
Browse to the Certificate file and enter the friendly name. In this example a wildcard cerficate was used, so the friendly name will be *.domain.com. If you used a different name, such as fs.domain.com or adfs.domain.com, you’d enter that name here as well.
After the certificate has been imported, you’ll want to verify it by going back to Server Certificates in IIS.
Next, you’ll need to add the Certificate to the Default Web Site. With the Default Web Site Selcted click Bindings.
Choose Type https, IP addresss All Unassigned, and Port 443. Then select the newly imported certificate and click Ok.
The site bindings should now look like:
Configuring AD FS
Now that we have the cerficate installed, we can resume the AD FS configuration. To launch the AD FS configuration wizard, just go into Administrative Tools and click on AD FS 2.0 Management.
When the AD FS Management Console opens, click the AD FS 2.0 Federation Server Configuration Wizard Link.
Select the option to Create a new Federation Service
On the next screen select New federation server farm. Choose this option unless you are absolutely sure you’ll never be installing a second AD FS server. It doesn’t hurt anything to have farm with only a single server, but it might give you more options down the road if you want to add redundancy.
On the Federation Service name, choose the certificate to use. In this example a wildcard certificate was used, so the name must be specified, fs.domain.com. This is the name clients will connect to, so it must be resolvable via DNS both internally and externally.
You must then specify a Service Account in Active Directory that will be used by AD FS.
On the Summary Screen review the changes that will be made and click next to begin the configuration.
When the installation is complete, click Close.
Install and Configure the Office 365 PowerShell Module
The next step is to download the PowerShell module and configure the Trust with Office 365. The PowerShell Module comes in 2 versions.
After the tool has been downloaded, run through the installation wizard.
Install the Sign-In Assistant
The Sign-In Assistant must be installed next. It comes in 32 and 64 bit versions.
Launch the Sign-In Assistant installer and click the Install button.
When the installation is complete, click Finish.
Set up the Trust with Office 365
We must now open PowerShell to convert the domain we previously added to Office 365 to a Federated domain. You’ll want to run Microsoft Online PowerShell as Administrator.
Type $cred=Get-Credential and hit Enter. This cmdlet prompts you for credentials. Type your Office 365 administration account credentials.
Type the following and hit enter:
Connect-MsolService –Credential $cred
Type the following, where domain is the name of your domain and hit enter:
Convert-MsolDomainToFederated –DomainName domain.com
If successful, you should see the message:
Successfully updated ‘domain.com’ domain.
Enable Directory Synchronization
Now that the AD FS server is set up we are ready to enable Directory Synchronization. Before you begin you should make sure the following requirements are met.
- You have a 32 bit Windows 2003 or 2008 Server to install Dir Sync on.
- The server cannot be a domain controller, but must be a member of the domain.
- You must have an account which has Enterprise Admin rights to the local Active Directory.
- .Net 3.5 or later and PowerShell
You’ll need to start the Directory Sync configuration in the Portal by click on Users (under Management in the left column). Once there, click on Set up Active Directory Synchronization.
Work through the checklist and on Step 3, click Activate and then in Step 4, download the client.
Run DirSync.exe and click the Next button on the welcome screen.
Accept the License Terms and Click Next.
Choose the installation folder and click Next to begin the installation.
When the installation is complete, click Next. Verify the “Start Configuration Wizard now” box is checked and click Finish.
When the configuration wizard appears, click Next on the welcome screen
Enter your Office 365 Administrator Credentials and click Next.
Enter the username and password for local Active Directory Enterprise Admin and click Next.
If you plan on using Rich Coexistence, check the Enable rich coexistence box. In this example the option is not available because there is not an Exchange 2010 Server. Click Next to begin the configuration.
When Complete, click the Finish button to begin the initial synchronization.
When the directory synchronization is running check the events in the Application Event log to see the current status.
Testing AD FS
At this point we should be ready to do some basic AD FS testing. The first thing you’ll probably need to do is create an account in your local Active Directory (without a mailbox if you have Exchange). You’ll need to make sure the account’s UPN suffix is @domain.com. If your Internal Active Directory Namespace is something like domain.local, or anything other than domain.com, you’ll probably have to add an additoinal DNS suffix to the domain so you can assign it to users. See the following article for more details:
Once the account is created, let it replicate into Office 365 and then assign it a license.
Before we can try and sign in there are a couple more things that need to be done on the workstation you’ll be testing from.
First, Sign-In Assistant must be installed. It comes in 32 and 64 bit versions.
Download and install the appropriate version.
Second, you’ll probably need to modify your Internet Explorer settings so you can automatically authenticate with the AD FS server. The default settings in IE seem to be that Automatic Login occurs only in the Intranet Zone.
So to keep things simple we just need to put our AD FS server in the Intranet Zone. This will allow Internet Explorer to automatically pass the user’s credentials to the AD FS server.
Finally, sign into the workstation as the test account and browse to https://portal.microsoftonline.comwhen prompted for the user name enter firstname.lastname@example.org, or in this email@example.com. When you enter the user name, you’ll notice the Password Area turns grey and you must click the link to Sign in.
When you click the link pay close attention to the Address bar in your browser, what you should see happen is your client connecting to your AD FS server, for example fs.domain.com. If you get prompted for credentials, you should check your Internet Explorer settings, if you get a page cannot be displayed, check your DNS to make sure the client can resolve the AD FS server.
If all goes well you’ll be automatically logged into the Portal.
At this point, you should have a very basic AD FS install complete. Reveiw our other articles for more advanced configuration options.