The Problem:
Network mapping functionality, which allows users to view and access shared resources on a network, does not work in Windows 11 version 24H2. This issue is not present in earlier versions such as 23H2, 22H2, or Windows 10, where network mapping operates as expected.

Problem Analysis:
Users have reported that after upgrading to Windows 11 24H2, they are unable to map network drives or view network shared resources. The symptoms include network drives not appearing in File Explorer and error messages when attempting to map a network drive manually. This problem began following the installation of the Windows 11 24H2 update, suggesting a potential change in network protocols or security settings in this version.

Root Cause:
The root cause of the problem appears to be changes in network security protocols and configurations introduced in Windows 11 24H2. These changes may include enhanced security measures that inadvertently block network discovery or alter the way network credentials are handled, preventing successful network mapping.

Solution:
To resolve the network mapping issue in Windows 11 24H2, follow these steps:

1. Check Network Discovery Settings:

   • Open the Control Panel and navigate to Network and Sharing Center.
   • Click on Change advanced sharing settings.
   • Ensure that Turn on network discovery and Turn on file and printer sharing are enabled.

2. Enable SMB Protocols:

   • Open PowerShell as an administrator.
   • Run the following command to enable SMB protocols:

     Enable-WindowsOptionalFeature -Online -FeatureName "SMB1Protocol" -All

   • Restart your computer to apply the changes.

3. Modify Local Security Policy:

   • Press Win + R, type secpol.msc, and press Enter to open the Local Security Policy editor.
   • Navigate to Local Policies > Security Options.
   • Find and double-click Network security: LAN Manager authentication level.
   • Set it to Send LM & NTLM - use NTLMv2 session security if negotiated.

4. Check Credential Manager:

   • Open the Control Panel and go to Credential Manager.
   • Ensure that the correct network credentials are stored under Windows Credentials.

5. Update Network Adapter Drivers:

   • Open Device Manager and expand Network adapters.
   • Right-click your network adapter and select Update driver.
   • Choose Search automatically for updated driver software.

6. Firewall and Antivirus Settings:

   • Ensure that your firewall or antivirus software is not blocking network discovery or file sharing.
   • Temporarily disable them to test if they are the cause of the issue.

By following these steps, you should be able to resolve the network mapping issue in Windows 11 24H2 and regain access to network shared resources.