Plesk interface is not accessible: The paging file is too small for this operation to complete

Symptoms

• When opening Plesk in a web-browser, it fails to load with one of the following error messages:

  PLESK_INFO: Internal Server error 500

  ---

  PLESK_INFO: Lock Manager error: '[LockManagerException] Can't open or create shared memory by shm.name: "Global\SharedLockManagerStorage_v2"; shm.start_size: "4194304"; error "The paging file is too small for this operation to complete."'.

  ---

  PLESK_INFO: ERROR: Out of memory (allocated 2097152) (tried to allocate 655360 bytes) (common_messages_en-US.php:7)

• Application pools may be stopped in IIS.

• The following error message appears in %plesk_dir%admin\logs\php_error.log:

  CONFIG_TEXT: PHP Warning: PHP Startup: Unable to load dynamic library 'C:\Program Files (x86)\Plesk\admin\engine\php_plesk_util.dll' - The paging file is too small for this operation to complete in Unknown on line 0

Cause

RAM limit has been reached:

Resolution

Adjust the server configuration in one of the following ways:

• Allocate more RAM to the server
• Increase Virtual Memory size
• Kill some non-critical processes to free memory
• If this is a temporary RAM increase, wait for a while for the high RAM load to reduce

Warning: This is an administrative task and has to be performed by a server administrator.