The AV-TEST Institute recently tested the most popular Windows 10 client antivirus products on three primary criteria: protection, performance, and usability. Five of the 15 products tested earned a perfect rating of 6 for each of those criteria:F-Secure PSB Computer ProtectionKaspersky Endpoint SecuritySeqrite Endpoint SecuritySymantec Endpoint ProtectionTrend Micro Apex OneThe top 14 antivirus offerings shown here in alphabetical order scored at least 17 points out of a possible 18.\u00a0You can drill down on the full results at The AV-TEST Institute's website.\u00a0How to use these antivirus test resultsKeep in mind that these tests were done in a lab environment. Different enterprise systems with different threat models will see different results for each of the products listed below. In other words, don\u2019t expect that a 100% detection rate in the lab means that a product will detect all antivirus threats on your network. One reason is that it can take days for a newly submitted malware sample to make it into any given antivirus product\u2019s database.What the AV-TEST results show is which Windows antivirus products are consistently the best at the fundamentals of malware detection and have minimal impact on system performance. That makes a good starting point as you evaluate which products work best for your environment.Best Windows 10 antivirus tools1. Avast Business Antivirus Pro Plus 19.7Avast Business Antivirus Pro Plus\u00a0had a perfect scores for stopping zero-day malware attacks and malware discovered in the last four weeks. Performance was above average in all tests except for launching popular websites, where it was 13 percentage points slower than average on a standard PC. It registered no false detections, warnings or blockages.2. Bitdefender Endpoint Security 6.6Bitdefender Endpoint Security stopped 100% of all zero-day malware web and email attacks tested, and all malware discovered in the last four weeks. Performance degradation was mostly minimal in and in some cases better than industry average. However, it lost a half-point due to a 12% slowdown in time to launch popular websites. For the latest round of tests, the product gave no false warnings, detections\u00a0or blockages.3. Bitdefender Endpoint Security (Ultra) 6.6Bitdefender Endpoint Security\u00a0(Ultra) had similar ratings to the regular Bitdefender products. It did register one false blockage of a legitimate action.4. Check Point Endpoint Security 81.10With perfect protection and usability scores (no false warnings, detections or blockages), Check Point Endpoint Security just missed a perfect overall score due to one performance test. It had a 44% slowdown when launching popular websites on a standard PC, compared to a 19% industry average.\u00a05. Eset Endpoint Security 7.2If not for its below-average detection rate of zero-day malware (98.9%) and performance hit on installing frequently used apps (31% slowdown), Eset Endpoint Security would have had a perfect score. It scored better than or near the industry average in other performance tests, and gave only one false detections of legitimate software as malware.6. F-Secure PSB Computer Protection 19PSB Computer Protection had one of the best results in the performance tests,\u00a0 where it produced slow-downs below or at industry average across the board. Its only blemish was one false detection of legitimate software as malware, which did not cost it on the usability score.7. G-Data AntiVirus Business 14.2G-Data AntiVirus Business was nearly perfect on its protection scores, having detected 99.5% of zero-day malware attacks. It also had no hiccups on the usability tests. The produce did lose a point due to higher-than-average slowdowns on a couple of performance tests. It was nine percentage points slower when installing frequently used appls on a standard PC and nine points slower when copying files.8. Kaspersky Endpoint Security 11.2With its perfect scores across the board, Kaspersky Endpoint Security continues its run in the top tier of anti-malware products. It stopped 100% of all zero-day and known attacks tested. On the performance side, the product had minimal impact on the launching or installation of websites or applications. It flagged no false warnings, detections or blockages.9. McAfee Endpoint Security 10.6McAfee Endpoint Security detected all malware samples discovered in the previous four weeks and 97.8% of zero-day malware samples, the latter resuting in the loss of a half point. Performance was near industry average in every category and better in some. The product gave no false warnings, detections or blockages.10. Microsoft Defender Antivirus 4.18Microsoft Defender Antivirus was as good as most other product in terms of detecting malware, losing a half-point on the detection rate for malware attacks (96.7%),. It performed well, at or below industry average on a standard PC for all tests. It gave no false warnings, detections or blockages.11. Seqrite Endpoint Security 18.00With perfect scores for the protection tests and mostly above-average performance scores, Seqrite Endpoint Security fared well. AV-TEST gave it a full six points on usability despite six false detections of legitimate software as malware.\u00a012. Sophos CIXA 2.5Sophos CIXA lost a half-point on its protection score with a 97.8% detection rate on malware. It also slowed the launch of frequently used applications at a higher-than-average rate. The product gave no false warnings, detections or blockages.13. Symantec Endpoint Protection 14.2In addition to a perfect protection score, Symantec Endpoint Protection is one of the better-performing anti-malware tools tested. It scored above industry average in every category except launching standard applications. It gave no false warnings, detections or blockages.14. Trend Micro Apex One 14.0Trend Micro Apex One\u00a0had near-perfect protection scores, and it was another top performer. It gave no false detections, warnings, or blockages.