Tracking: KB4480966 for Windows 10 1803 Causing False Positives for Malware for Some

Not every malware tool is affected by this particular bug, but if your particular malware tool is casting errors about d2d1.dll being a Trojan after installing KB4480966 for Windows 10 1803 after the release of this month’s Patch Tuesday stack of updates, you can rest assured it’s a false positive.

You can effectively add an exclusion for this file to your malware package.

Thread: Since Update KB4480966; d2d1.dll a Trojan?