If you have upgraded your operating system to Windows 10 version 1803 (RS4) or later, Kaspersky Security Cloud has following limitations when run for the first time:

• Only the File Anti-Virus component works. Other components are disabled.
• Self-Defense of files and system registry works correctly. Self-Defense of processes is disabled.
• The application interface is unavailable before restarting the computer. 
• The application displays notifications that:
  • Some application components are disabled.
  • Computer restart is required once the new operating system adaptation process has completed.
• In the context menu in the taskbar, only Exit is available.

After switching to Windows 10, you can only start Kaspersky Security Cloud components and processes after completing the OOBE (Out Of Box Experience) wizard.

Applications components and processes include:

• Application interface
• File Anti-Virus
• Mail Anti-Virus
• IM Anti-Virus
• Updates
• Heuristic protection
• Proactive defense
• Automatic Exploit Prevention
• Application Control
• Anti-Blocker
• Protection from rootkits
• Firewall
• Network Monitor
• URL Advisor
• Protected Browser
• Safe Money 
• Kaspersky Security Network
• Anti-Spam
• Anti-Banner
• Private Browsing
• Protection against phishing
• Virtual Keyboard
• Secure Data Input
• Password protection
• Additional settings
• Scan settings
• Performance settings
• Task Manager
• Wi-Fi Security Notification
• Kaspersky Protection Center services
• Online Management
• Social media services (Facebook, Twitter)
• My Kaspersky
• Backup and Restore
• Unused Data Cleaner
• File Shredder
• Data encryption
• Installation of Kaspersky Password Manager from the application interface
• Kaspersky Password Manager
• Control of password creation and changes
• News
• Devices in my network
• Weak settings control
• Determination of child device use

If the application does not receive information that the OOBE wizard has finished within 15 minutes, the above-listed components and processes will be enabled automatically.

If Device Guard is enabled in Windows 10, Kaspersky Security Cloud will have the following limitations: 

• Windows 10 versions 1607 (RS1), 1703 (RS2), 1709 (RS3):
  • Protection against screen lockers
  • Protection against cryptoviruses
• Windows 10 versions 1803 (RS4), 1809 (RS5), 1903 (19H1):
  • Clipboard protection
  • Browser protection from keyboard and mouse input emulators (input spoofing).
  • Protection against remote management applications.
  • Browser protection (management through API, protection from attacks in browser windows that use dangerous messages, protection from message queue management).
  • Detection of screen lockers if UMCI mode is enabled.

On Windows 10 versions 1703 (RS2), 1709 (RS3), 1803 (RS4) without the 17.09.2018 update or later installed (for details, see the Microsoft support site), the following issues are possible when the Device Guard mode is enabled:

• The installation of Kaspersky Security Cloud may be forbidden. We recommend that you disable Device Guard or download and install the update if it was not installed automatically.
• The operating system may crash with a blue screen error (Blue Screen of Death, BSOD) after rolling back the Windows 10 update from 17.09.2018 and rebooting the computer when Kaspersky Security Cloud is installed.
• The operating system may crash with a blue screen error after enabling Device Guard and rebooting the computer when Kaspersky Security Cloud is installed.