We are one of several antimalware vendors who encountered issues after installing Microsoft Windows April 2019 updates or later on systems.
Examples of reported issues include:
Slow boot times
Slow performance
See the following table for the latest information about each product.
Microsoft Windows Operating System Microsoft KB Endpoint Security Impact Trellix Endpoint Impact
Windows 7 Service Pack 1
4493472 4493448 Impacted – See KB91465
Unsupported platform
Windows 8.1
4493446 4493467 Impacted – See KB91465
Unsupported platform
Windows Embedded 8 Standard
4493450 4493451 No impact
Unsupported platform
Windows 10
No impact
No impact
Windows Server 2008 R2 Service Pack 1
4493472 4493448 Impacted – See KB91465
Unsupported platform
Windows Server 2012 R2
4493446 4493467 4493450 4493451 No impact
Unsupported platform
Windows Server 2016
4493470 No impact
Unsupported platform
Windows Server 2019
4493509 No impact
Unsupported platform
For details about the fix for Client Server Runtime Subsystem (CSRSS) included in the Windows April 2019 updates, see this
Microsoft article on CVE-2019-0735 .
