Some antivirus programs flag BioTime’s PushSDK.dll and zkemkeeper.dll as suspicious because they handle raw socket communication. Add the BioTime installation folder to your antivirus exclusions.
ZKTeco no longer actively develops BioTime 8.5. It is considered a legacy version . For new projects, use BioTime 10.0+ or ZKBioSecurity. zkteco biotime 85 software download new