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Microsoft Defender for Endpoint - Network Issues
Hello, We recently started onboarding our machines into the Microsoft Security Center and using Defender for Endpoint. After doing so, we've noticed what seems to be related to how defender ...
- Here's what ended up resolving my issues (although it sounds like it wont apply to your situation)
Issue 1 - File Shares - We discovered this was only happening on a file server that had Server 2012 R2. We ended up upgrading the server to 2019 and the issue disappeared.
Issue 2 - Access to Flow - Our DNS was also being filtered by a third party provider (DNSFilter). Once we disabled DNSFilter and just let Defender for Endpoint do the filtering, the access issues resolved.
SteveTheITDudeDid you configure firewall rules either on MEM portal or via Group Policy?