• Improvements to application stability
• OpenSSL 1.0.1L is now used
• Updates to the Incompatible software list
  

• Kaspersky Endpoint Security 10 Service Pack 1 for Windows cannot be upgraded to Kaspersky Endpoint Security 10 Service Pack 1 Maintenance Release if any private fixes are installed on the computer.
  If you want to upgrade, please remove all private fixes installed. See the article on private fix removal for details. 
  
• Kaspersky Endpoint Security 10 Service Pack 1 for Windows cannot be upgraded to Kaspersky Endpoint Security 10 Service Pack 1 Maintenance Release 1 if the application is installed without klim5 driver on a computer running under Microsoft Windows XP .
  To upgrade, install the patch kes10sp1mr1.msp from the installation package. Use the following command:
  msiexec /i {7A4192A1-84C4-4E90-A31B-B4847CA8E23A} PATCH=< full path to kes10sp1mr1.msp > NOKLIM5=1 /qn .
  Other limitations are listed in a separate article on known limitations .
  

Kaspersky Endpoint Security 10 Service Pack 1 Maintenance Release 1 patch is performed by the avpsus service without closing the application and terminating the computer protection.

Depending on the application module update settings, the patch can be installed in either way:

1. If the option "Install critical and approved updates" is selected in the update task properties, the patch will be installed automatically, without your confirmation.
2. If the option "Install only approved updates" is selected in the update task properties, the patch will be installed upon your confirmation. If the application is managed by Kaspersky Security Center 10 Service Pack 1, the patch should be confirmed by the administrator via Kaspersky Security Center console (Application management node, Software updates section). If the application is installed in the standalone variant, the patch should be confirmed manually through the application interface.
   During patch installation, Kaspersky Endpoint Security will display the message that a system restart is required. To complete installation, reboot the computer.