in your first attached image some errors indicates that the test connection to the Microsoft Defender Antivirus cloud service failed and specifically mentions an issue with establishing a connection to MAPS (Microsoft Active Protection Service). Here are some steps you can take to troubleshoot and resolve this error:
Check Network Connectivity: Ensure that the affected machine has a stable internet connection. Verify that there are no network issues, such as restrictions, firewalls, or proxy servers blocking the connection to the Microsoft Defender Antivirus cloud service. Make sure the necessary ports and protocols are open.
Validate Proxy Settings: If your organization uses a proxy server, ensure that the proxy settings are correctly configured for the machine experiencing the error. Check if the proxy is correctly configured and allowing connections to the Microsoft Defender Antivirus cloud service and MAPS servers.
Verify DNS Resolution: Confirm that the DNS resolution on the machine is working correctly. Incorrect DNS settings can lead to connection failures. Ensure that the DNS server settings are configured properly or consider using alternative DNS servers.
Temporarily Disable Other Security Software: If there are other security applications or antivirus software running on the machine, temporarily disable them to check if they are interfering with the connection to the Microsoft Defender Antivirus cloud service. Some security software may conflict with each other, causing connectivity issues.
Check for Updates: Make sure that the machine has the latest updates installed for Microsoft Defender Antivirus. Outdated versions may have compatibility issues that can cause connection failures. Check for updates and install any available patches or updates for Defender Antivirus.
Restart the Machine: Sometimes, a simple restart can resolve temporary glitches or issues with the connection. Restart the affected machine and check if the error persists.
- Contact Microsoft Support: If the issue persists after trying the above steps.