How do I stop the prompt for Office 365 credentials?

When using SharePoint Online (as part of Office 365) you may be prompted to enter your Office 365 credentials (username and password) multiple times.

Especially when accessing Office 365 in different applications (e.g. Internet Explorer, Word, Excel, OnePlaceMail).

To minimize the occurrence of these authentication prompts when using OnePlaceMail ensure you check:

• Remember me
• Keep me signed in