Outlook 2007

Office 2007 comes only in a 32 bit version.

Outlook 2010

Office 2010 comes in both a 32 bit and a 64 bit version.
To determine which version is installed follow these steps:

1. Start Outlook.
2. Select File menu.
3. Select Help option.

Outlook 2013

Office 2013 comes in both a 32 bit and a 64 bit version.
To determine which version is installed follow these steps:

1. Start Outlook.
2. Select File menu.
3. Select Office Account option.


4. Click About Outlook button.

Outlook 2016

Office 2016 comes in both a 32 bit and a 64 bit version.
To determine which version is installed follow these steps:

1. Start Outlook.
2. Select File menu.
3. Select Office Account option.


4. Click About Outlook button.