How to check whether you are using new Outlook or classic Outlook

1. Step 1:  First way to distinguish the Outlook version: check the icon

 This is the new Outlook icon

 This is the classic Outlook icon

2. Step 2:  Second way to check: open Outlook and look at the ribbon tabs

Open Outlook and check the tabs at the top.

If you see the tabs in this order: Home | View | Help, this means you are using new Outlook.

3. Step 3:  If you see the tabs in this order: File | Home | Send/Receive | View | Help, this means you are using classic Outlook. 
   

    

4. Step 4:  Check Outlook Version: use Settings or About Outlook

You can also check which Outlook version you are using from inside the application.

For new Outlook:

1. Step 1:  Open Outlook. 

    

2. Step 2:  Click Settings icon on the top right. 

3. Step 3:  Select General. 

    

4. Step 4:  Click About Outlook. 

5. The Outlook version information will be shown on the right side.

For classic Outlook:

1. Step 1:  Open Outlook. 

    

2. Step 2:  Click File. 
   

3. Step 3:  Select Office Account. 
   Step 4:  If Office Account is not shown, click Help instead. 

4. The Outlook version and build number will be shown under Product Information > About Outlook.

5. Step 5:  To check whether you are using the 32-bit or 64-bit version, click About Outlook.