This step-by-step tutorial will show you how to generate a CSR code and install an SSL Certificate on Microsoft Office 365. Besides configuration instructions, you will also learn a few interesting facts about Office 365, as well as discover the best place to shop for affordable SSL certificates.

If you’ve already generated the CSR code and received the SSL Certificate from your SSL provider, skip the CSR creation steps, and jump straight to the installation guidelines. Use the anchor links below to navigate between sections.

Generate a CSR code on Microsoft Office 365

CSR stands for Certificate Signing Request, a block of encoded text with contact data, every SSL applicant must send to the CA during the SSL enrollment process.

As with any Microsoft product, you will generate the CSR code using the Internet Information Services (IIS) manager. Please, follow the steps below:

  1. Click Start > Administrative Tools > Internet Information Services (IIS) Manager
  2. In the IIS manager on the left, choose your server name
  3. From the middle pane, select Server Certificates
  4. On the right Actions pane, click Create Certificate Request
  5. In the Request Certificate window, fill in the fields as shown below:
    • Common Name: the FQDN (fully-qualified domain name) you want to secure with an SSL Certificate (e.g.,
    • Organization: the full legal name of your company (e.g., Your Company LLC)
    • Organizational Unit: the department within your company requesting the SSL Certificate (e.g., IT)
    • City/locality: the city where your company is registered (e.g., Vancouver)
    • State/province: the state where your company is located (e.g., British Columbia)
    • Country/region: the twoletter code of your country
  6. Verify the info you’ve just entered and click Next
  7. From the Bit Length drop-down list, select 2048 and click Next
  8. Specify a file name for the certificate request and choose a save location
  9. Click Finish

You have successfully created your CSR code. You can open the CSR file with any text editor of your choice such as Notepad and copy its contents into the corresponding box during the certificate order process with your SSL vendor.

Install an SSL Certificate on Microsoft Office 365

After the CA delivers the SSL certificate to your email, download the ZIP folder and extract its contents. Make sure your SSL Certificate has the .p7b extension. If it doesn’t use an SSL converter tool, copy the contents of your SSL certificate file into a new plain text document and save it as a .p7b file.

To complete the Microsoft Office SSL installation, perform the following:

  1. Go to Start > Administrative Tools > Internet Information Services (IIS) Manager.
  2. From the main section, select Server Certificates
  3. Under Actions, click on Complete Certificate Request
  4. In the Complete Certificate Request window, click the three-dotted button, and select the location of your SSL Certificate file
  5. Create a friendly name for your SSL certificate
  6. From the Select a Certificate Store drop-down list, select Personal then click OK.

    Note: If you receive an error message, during the installation process click OK then Cancel out the Complete Certificate Request wizard. Refresh your IIS console (click F5 on your keyboard) and look for your new certificate in the middle section under Server Certificates. If you see the new certificate, your SSL installation was successful. If it’s not there, you will have to generate a new CSR code and reissue your cert.

  7. Next, you must assign and bind the SSL certificate to your site. Select your server, expand the Sites folder, and click on the website you want to secure
  8. Under Actions, click Bindings
  9. In the Site Bindings Window, if there isn’t an existing HTTPS binding, click on Add and change Type from HTTP to HTTPS
  10. From the SSL Certificate drop-down list, select the friendly name of the SSL certificate you want to use, then click OK.

Congratulations, you’ve successfully installed an SSL certificate on Microsoft Office 365.

Test Your SSL installation

After you install the SSL Certificate on Microsoft Office 365, type your URL in your browser’s address bar to check the SSL padlock and certificate information. Even if everything displays correctly, we recommend performing a thorough test of your SSL configuration that’ll pinpoint potential hidden errors and vulnerabilities. These powerful SSL tools deliver instant scans and reports on the state of your SSL Certificate.

Microsoft Office 365 history

Launched in 2011, Office 365 is a line of subscription services provided by Microsoft, as part of the Microsoft Office product range. Microsoft Office is the successor of Microsoft Business Productivity Online Suite (BPOS). It features a number of popular services and products such as Outlook, Office Applications, Collaboration tools, Office 365 education, and cloud-hosted services.

According to Microsoft, in the fourth quarter of the fiscal year 2017, Office 365 revenue surpassed for the first time that of conventional license sales of Microsoft Office software.

Here, you can find the update history for Microsoft 365 Apps, and the supported versions.

Where to buy the best Microsoft Office 365 SSL Certificate??

If you’re looking for a great shopping experience, then SSL Dragon is your best SSL seller. Our intuitive and user-friendly website will guide you through the entire range of SSL Certificates. All our products are issued by reputable Certificate Authorities and are compatible with Microsoft Office 365. We offer the following SSL validation types:

  • Domain Validation
  • Business Validation
  • Extended Validation
  • Wildcard
  • Multi-Domain
  • Code Signing
  • IP Address
  • Email/Documents

Enjoy the lowest prices on the market, and dedicated customer support for any certificate you choose. And, if your struggling to find the perfect cert for your website, use our SSL Wizard and Advanced Certificate Filter tools to get a helping hand.

If you find any inaccuracies, or you have details to add to these SSL installation instructions, please feel free to send us your feedback at [email protected]. Your input would be greatly appreciated! Thank you.