Microsoft has released security updates for vulnerabilities found in:
Exchange Server 2013
Exchange Server 2016
Exchange Server 2019
All versions (Cumulative Update levels) are impacted. ...
Updated Aug 05, 2021
Version 15.0
Blog Post
LukasSMSFT
Microsoft
Microsoft
david812 The latest version is: 21.07.13.1221. You will get the latest version using this link: https://aka.ms/ExchangeHealthChecker . The script has an auto-update function. If you run it on a computer with internet access and the version to be used is not current, the script performs an update.
AADSI the Health Checker does not check the schema version. We perform testings if the changes that have come with the schema update have been applied.
fw888888 Make sure to update the Auth certificate (as outlined here: https://docs.microsoft.com/en-us/exchange/troubleshoot/administration/cannot-access-owa-or-ecp-if-oauth-expired). Wait some time until the deployment of the new Auth certificate is completed. Run the Health Checker (https://aka.ms/ExchangeHealthChecker) against every server and check the Auth certificate (see: Installation Tips section of the blog post). Deploy / install the July 2021 Security Update (SU) and then run the PrepareSchema.