OIT Home > OIT Knowledge Base Search Knowledge Base: How do I manage my Office 365 licenses? You can manage your Office 365 ProPlus subscriptions online through your Volmail account. From the management interface, you'll be able to see how many devices you have installed the software on and deactivate any licenses that are no longer in use. To start: 1. Log into your Volmail (Office 365) account. 2. Select the gear icon for Settings in the upper right corner. 3. Choose Office 365 settings. 4. Select Install Status. To deactivate a device, choose Deactivate under the device that is no longer in use. You are allowed up to 5 active installations. Need more help?