Bug ID 564890: Endpoint checking reports incorrect last scan time for Windows Defender v4.8.10240.16384 on Windows 10

Last Modified: Oct 17, 2023

Affected Product(s):
BIG-IP APM(all modules)

Known Affected Versions:
11.5.3, 11.5.4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10, 11.6.0, 11.6.1, 11.6.2, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3

Opened: Dec 28, 2015

Severity: 3-Major

Related Article: K93491035

Symptoms

Endpoint checking reports incorrect 'last scan time' for Windows Defender v4.8.10240.16384 on Windows 10

Impact

Access policy will be evaluated incorrectly. In some cases, access policy evaluation might fail.

Conditions

User is connecting to APM on Windows 10. Access policy has an endpoint check configured. Access decision is made based on last scan time. Client system has Windows Defender v4.8.10240.16384 installed on it.

Workaround

Don't use 'last scan time' in access policy. As an alternative, you can provide read-only access to the folder that OPSWAT needs to access: C:\ProgramData\Microsoft\Windows Defender. This requires an Administrator to set read-only folder access for the Windows system that is being accessed. This is not a BIG-IP system-specific workaround, and depends completely on your internal networking configuration and permissions settings.

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips