Lightweight pooling was enabled and LiteSpeed Maintenance Plans started to fail with the attached error. xp_sqllitespeed_version returned the following information:
The SQL Server option Lightweight pooling is enabled!
This option cannot be set when using SQL LiteSpeed.
Please disable this option, or use the SQL LiteSpeed command line
The SQL Server option Lightweight pooling was enabled.
Disable Liteweight pooling option.
Also see SOL33809