Microsoft Defender for Endpoint is currently detecting at least two Chrome updates as malware. The Slovenian localization file bundled with the Google Chrome installer is tagged as a malicious file. Microsoft has stated that the issue was an automation error and is now resolved. To clear the cached detection on endpoints in their environment, systems admins are advised to update to the latest malware definitions by using this procedure: Update to get rid of the detected files using quarantine as a remediation as a. remediation action.
Source: https://www.bleepingcomputer.com/news/security/microsoft-defender-atp-detects-chrome-updates-as-php-backdoors/