SQL Server Maintenance plan not opening
You may get below error when you try to open any SQL Server Maintenance Plan: -
TITLE: Microsoft SQL Server Management Studio
‘Agent XPs’ component is turned off as part of the security configuration for this server. A system administrator can enable the use of ‘Agent XPs’ by using sp_configure. For more information about enabling ‘Agent XPs’, see “Surface Area Configuration” in SQL Server Books Online. (ObjectExplorer)
Its possible that some one have disabled Agent XPs component on your server.
Run below sql query to re-enable Agent XPs and then try to open maintenance plan again. It will work.
sp_configure 'show advanced options', 1; GO RECONFIGURE; GO sp_configure 'Agent XPs', 1; GO RECONFIGURE GO