Forum Discussion
SteveTheITDude
Feb 19, 2021Copper Contributor
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 ...
- May 07, 2021Here'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.
kelvin_flare
May 06, 2021Copper Contributor
Im also experiencing the same issue. We have Server 2019 and we configure windows firewall via GPO and have it disabled.
I have a case open right now but I also see some old article that dates back to 2018 about this and supposedly was going to get fixed?
I have a case open right now but I also see some old article that dates back to 2018 about this and supposedly was going to get fixed?
SteveTheITDude
May 07, 2021Copper Contributor
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.
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.