Managing personal Outlook.com account settings, security, and privacy
Hi Awab,
Thank you for posting your query in Microsoft Community.
To keep your Outlook.com account active you must **sign in** to the account at least once every 365 days.
For more information I suggest you to follow the suggestions provided by the JMH3143 (MS-MVP")) replied on February 4, 2016.
I hope this helps.
Thanks & regards.
Mohammed Ali.