Windows

1. Shut Down Applications Manager (Ensure that the ManageEngine ApplicationsManager service has been stopped if it has been installed as a Windows service)
   
2. Open a command prompt with administrator privileges, navigate go to the <Applications Manager Home> directory and execute the following commands:
   shutdownApplicationsManager.bat
   shutdownApplicationsManager.bat -force
3. Exit the command prompt and close all files, folders that are open in the <Applications Manager Home> directory.
   
4. Click Start → Programs → ManageEngine Applications Manager → Uninstall Applications Manager.
   
5. Also from Control Panel → Add/Remove Programs.
   

1. Shut Down Applications Manager (Ensure that the ManageEngine ApplicationsManager service has been stopped if it has been installed as a Windows service)
2. Open a command prompt with administrator privileges. [cmd > right click --> run as administrator] View screenshot
   
3. Go to <Applications Manager Home> directory ( by default it is C:\Program Files\ManageEngine\AppManager\ ) and execute the below command:
          shutdownApplicationsManager.bat -force
4. Click on the Windows Start button -> Run -> regedit. Then in the Registry Editor, go to
          For 32-bit machine: HKEY_LOCAL_MACHINE -> SOFTWARE -> Microsoft -> Windows -> CurrentVersion -> Uninstall 
          For 64-bit machine: HKEY_LOCAL_MACHINE-> SOFTWARE -> Wow6432Node -> Microsoft -> Windows -> CurrentVersion -> Uninstall
   Delete the key entry that has the DisplayName as ManageEngine Applications Manager .
   
5. Delete the directory which has the same name as the above entry in the C:\Program Files\InstallShield Installation Information\ directory (For a 64 bit machine, go to C:\Program Files (x86)\InstallShield Installation Information directory)
6. If Applications Manager has been installed as a service, uninstall the service first by executing the uninstallService.bat file under <Applications Manager Home>\bin\ directory.
   
7. Delete it from the start menu by right clicking on Start -> All Programs -> ManageEngine Applications Manager xx and choosing the delete option.
8. Finally, delete all the files present under <Applications Manager Home> directory. 
   

Linux

1. From the command line, go to <Applications Manager Home> directory (by default, it is under /opt/ManageEngine/AppManager ) and execute the below commands:
   cd _ManageEngine\ Applications\ Manager15_installation/
   ./Change\ ManageEngine\ Applications\ Manager15\ Installation -i console
2. Delete all the files present under the <Applications Manager Home> directory.
   

1. From the command line, go to <Applications Manager Home> directory (by default, it is under /opt/ManageEngine/AppManager ) and execute the below commands:
         sh shutdownApplicationsManager.sh
         sh shutdownApplicationsManager.sh -force
2. Exit out of the command prompt and close all files, folders opened in the <Applications Manager Home> directory.
3. Execute the command ./uninstallApplicationsManager from the <Applications Manager Home> directory.
   
4. Click Uninstall in the popup screen to proceed.
5. Finally, delete all the files present under the <Applications Manager Home> directory. (by default, it is under /opt/ManageEngine/AppManager )

If you still face any issues due to permissions or due to files being locked then run below command to make sure all process are killed from the /opt/ManageEngine/AppManager location.
    ps -auxwwwwwww|grep working|grep \`pwd\`|grep java|awk '{system("kill -9 "$2)}'
   rm -rf working/pgsql/data/amdb/postmaster.opts