PlayStation Knowledge Center
The PlayStation Network is currently:
In order to continue to deliver you the best online games experience, we will be performing maintenance on Monday, March 10th. This maintenance will start at approximately 9:30am PDT and end around 3:O0pm PDT.
During this maintenance period, you may receive a message that states “Sony Entertainment Network is undergoing maintenance” when attempting to access the PlayStation Store or PlayStation Home. If you have signed in to PSN within 5 days prior to the start of maintenance, you may be able to play games online and enjoy apps such as Netflix, HULU Plus and Music Unlimited during this maintenance period.
PS4 users will not be able to view the What's New, Live, and Library areas of their console. Share functions will be impacted as well.
We will update you with any changes that may occur in regards to this scheduled maintenance. If you would like to receive a notice when PSN is fully restored, be sure to follow the official PlayStation Twitter account and our support Twitter account, @AskPlayStation.
If there are issues with the PlayStation Network, there will be an alert ticker at the top of the Knowledge Center page, similar to the sample below.