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Office 365 - FAQs

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As you begin to use Office 365, it is important to understand the capabilities and limitations of the tools.  Some highlights are provided below with more detail available at each of the links.

Email Limits

How big is my mailbox?  Each user receives a 50 Gigabyte mailbox.  This is 50 times the storage space UIW previously provided.  In the summer of 2017 Microsoft will upgrade each mailbox to 100 Gigabytes.

How large are the attachments I can send?  In the Windows version of Outlook, the max file attachment size limit is 150 Megabytes.  In the Mac version of Outlook, the max file attachment size is 35 Megabtyes.  Using the Outlook Web Client, the max attachment size is 112 Megabytes.   

Detailed Email limits page: 

OneDrive File Limits

Are there restrictions on file names?  Yes.  Files names CAN NOT contain any of the following characters #, %, <, >, :, ", |, ?, *, /, \.  Additionally folders can not start with _t or _w.  Click the link below for more details.  

What is the largest file I can copy in OneDrive?  Users can copy a single file up to 10 Gigabtyes in size.

Detailed OneDrive Limits:

Skype for Business Limits

How many simultaneous users can I have on a Skype video chat?  Skype supports 250 users simultaneously.

Detailed Skype for Business Limits:

Office Online

Do I still receive additional copies of Office?  Yes.  Each user can download and install the full version of Office on up to 5 computers as well as an additional 5 mobile devices such as a tablet or smartphone.

Download instructions are provided on the O365 Setup tabs to the left.