https://integent.com/project-server-2013-active-directory-synchronization-issues-and-resolution/
Project Server 2013: Active Directory Synchronization Issues and Resolution - Integent
project serveractive directorysynchronizationissuesresolution
https://blog.hametbenoit.info/2020/01/21/azure-ad-dont-forget-to-exclude-the-directory-synchronization-accounts-from-conditional-access/
Azure AD – Don’t forget to exclude the directory synchronization accounts from conditional access
Jul 1, 2020 - The following issue occurred for one of my customers after enabling MFA for all users. The directory synchronization stopped working.The above situation may...
azure adthe directoryconditional accessforgetexclude
https://www.microsoftpressstore.com/articles/article.aspx?p=2861445&seqNum=3
Directory synchronization basics | Microsoft Press Store
directory synchronizationmicrosoft pressbasicsstore