Unable to login in Plesk with administrative account. An following warning appears:
Error: Unable to log you on. Another user with the same username (admin) is already logged in to Plesk.
Allow multiple sessions under administrator's account option is disbaled.
Restart Plesk Control panel to reset administative session:
For Linux :
# /etc/init.d/psa restart
If restart does not help remove session from
# MYSQL_PWD=`cat /etc/psa/.psa.shadow` mysql -u admin -D psa -e "delete from sessions where login like 'admin';"
For Windows run:
Win+R > services.msc > restart Plesk Management Service
Login as admin to Plesk->Profile & Preferences and enable Allow multiple sessions under administrator's account .