Top 20 AVD Troubleshooting Steps and Solutions

Author - eXplore CloudBuzz
January 09, 2025
0

Here's an updated troubleshooting steps with an additional "Action to Take" section, outlining what specific actions need to be taken to solve the issue. This will help streamline the troubleshooting process.

1. Error: "Cannot Connect to the Remote Desktop Session"

  • Error Code: 0x204
  • Solution:
    • Check Network Connection: Ensure that the user’s device is connected to the network and that there are no firewall or VPN issues blocking access.
    • Verify Session Host Availability: Confirm the session host is up and running. If it’s down, restart it.
    • Check RDP Port: Ensure port 3389 is open and accessible for RDP.
    • Client Version: Ensure the user is using the latest Remote Desktop Client.
    • Resource Availability: Check if the session host has enough resources (CPU, RAM) to handle incoming connections.
  • Action to Take:
    • Restart the session host if it's down.
    • Verify that RDP is enabled and correctly configured on the session host.
    • Ensure the latest Remote Desktop Client is installed on the user's device.

2. Error: "The connection has been lost"

  • Error Code: 0x80004005
  • Solution:
    • Session Timeout Settings: Check if session timeouts are configured too aggressively. Increase the timeout period in Group Policy or Session Host Configuration.
    • Network Stability: Verify the user's network connection. A weak or intermittent network connection could be causing the issue.
    • Event Logs: Check for specific error messages in the Event Viewer under Remote Desktop Services.
  • Action to Take:
    • Increase session timeout settings if applicable.
    • Check event logs for detailed error messages and fix any underlying issues.
    • Ensure the user's internet connection is stable.

3. Error: "User Profile Cannot Be Loaded"

  • Solution:
    • Check FSLogix Configuration: Ensure FSLogix is configured correctly and running on the session host.
    • FSLogix Profile Path: Verify the Azure File Share path is correct and accessible.
    • Permissions: Ensure the user has the necessary read/write permissions on the Azure File Share where the profile is stored.
    • Check Logs: Look at the FSLogix logs at C:\ProgramData\FSLogix\Logs for any errors related to the profile.
  • Action to Take:
    • Review FSLogix logs and resolve any errors listed.
    • Reconfigure FSLogix profile path or permissions if necessary.
    • Restart FSLogix service on the session host.

4. Error: "Session Host Registration Failed"

  • Solution:
    • Check Agent Installation: Ensure that the AVD Agent is installed on the session host and is running.
    • Network Configuration: Verify that the session host can communicate with Azure services. Ensure DNS resolution is working correctly.
    • Firewall/NSG: Ensure the session host is not blocked by firewall rules or Network Security Groups (NSGs).
    • Re-register Host: Try to manually re-register the session host using the PowerShell cmdlet Register-AzWvdSessionHost.
  • Action to Take:
    • Run Register-AzWvdSessionHost to re-register the session host.
    • Verify network connectivity and DNS settings.
    • Ensure the AVD agent is properly installed and configured.

5. Error: "Access Denied" when Connecting to AVD

  • Solution:
    • Check User Permissions: Ensure the user has the correct Azure AD or Active Directory permissions to access the AVD environment.
    • Conditional Access Policies: Check if any Conditional Access Policies are blocking the user’s access.
    • Role Assignment: Verify that the user is assigned to the correct host pool and has the right role (e.g., Desktop Virtualization User).
  • Action to Take:
    • Review and modify Conditional Access Policies if necessary.
    • Ensure user role assignments in Azure are correct.

6. Error: "Application Not Found"

  • Solution:
    • Check Application Installation: Verify that the application (e.g., Outlook, Teams, Chrome) is properly installed on the session host.
    • App Permissions: Ensure the user has proper permissions to launch the application.
    • Reinstall the App: If the app is missing, reinstall it on the session host.
  • Action to Take:
    • Reinstall the missing application.
    • Verify application permissions for the user.

7. Error: "Profile Disk is Full"

  • Solution:
    • Check Profile Disk Size: Ensure the profile disk size is sufficient. You may need to increase the size of the disk or offload some data.
    • Storage Account Space: Check if the storage account where the profile is stored has enough space.
  • Action to Take:
    • Increase the disk size if necessary.
    • Clean up unused or large files in the profile disk.

8. Error: "The requested session is currently unavailable"

  • Solution:
    • Check Host Pool Capacity: Ensure the host pool has enough available session hosts to accommodate all users.
    • Scaling: If needed, scale up the host pool by adding additional session hosts to handle more users.
  • Action to Take:
    • Add more session hosts to the host pool.
    • Check resource utilization on session hosts to ensure adequate capacity.

9. Error: "Invalid RDP License"

  • Solution:
    • Verify Licensing: Ensure that RDS CALs (Remote Desktop Services Client Access Licenses) are correctly assigned and valid.
    • License Configuration: Check Azure AD and Microsoft 365 licenses to ensure users have the correct licenses for AVD.
  • Action to Take:
    • Review and update licensing in Azure AD or Microsoft 365.
    • Verify RDS CALs are assigned and valid.

10. Error: "Windows Virtual Desktop Client is Unable to Connect"

  • Solution:
    • Update Client: Ensure the user is using the latest Windows Virtual Desktop Client.
    • Clear Cache: Clear any local cache or data related to the Remote Desktop Client.
    • Verify Network: Ensure that the user’s device has access to the necessary ports and Azure resources.
  • Action to Take:
    • Clear the Remote Desktop Client cache and reinstall the client if necessary.
    • Ensure necessary ports (e.g., 443) are open and not blocked by firewalls.

11. Error: "The application has failed to start because its side-by-side configuration is incorrect"

  • Solution:
    • Install/Repair C++ Redistributables: Install or repair the necessary Microsoft Visual C++ Redistributable packages on the session host.
    • Check Application Dependencies: Verify if the application has any missing dependencies or prerequisites that need to be installed.
  • Action to Take:
    • Reinstall the necessary Visual C++ Redistributables.
    • Check the application’s installation logs for any missing dependencies.

12. Error: "User's Profile Not Found on File Share"

  • Solution:
    • Check File Share Accessibility: Ensure the Azure File Share is accessible and the session host has permission to access it.
    • Check Profile Path: Verify the FSLogix profile path configuration and ensure the user’s profile exists in the expected location.
  • Action to Take:
    • Reconfigure or recheck the Azure File Share path and permissions.
    • Check if the profile exists on the file share and ensure it's not corrupt.

13. Error: "Cannot Open the Remote Desktop Session: No License Available"

  • Solution:
    • Check AVD License: Ensure that your AVD licenses are valid and sufficient.
    • License Assignment: Verify that each user has the appropriate Microsoft 365 or Windows Virtual Desktop license assigned.
  • Action to Take:
    • Review license assignments in Azure AD and update them if necessary.
    • Ensure the number of available AVD licenses is sufficient for the number of users.

14. Error: "The system cannot find the file specified"

  • Solution:
    • Check Application File: Verify the application or file the user is trying to access exists and is correctly installed.
    • Permissions: Ensure the user has the proper permissions to access the file or application.
  • Action to Take:
    • Reinstall or repair the application.
    • Verify and modify user permissions for accessing the file or application.

15. Error: "Access to the path is denied"

  • Solution:
    • Check Permissions: Verify that the user has the necessary read/write permissions on the folder or file path they are trying to access.
    • File Locking: Ensure no other process is locking the file the user is trying to access.
  • Action to Take:
    • Check and modify the folder/file permissions.
    • Ensure no other processes or users are locking the file.

16. Error: "The user session is disconnected"

  • Solution:
    • Network Check: Ensure there are no network connectivity issues causing the session to drop.
    • Resource Utilization: Check if the session host has enough resources (CPU, RAM, etc.) and isn’t overwhelmed.
  • Action to Take:
    • Check the network for connectivity issues.
    • Monitor session host resources and scale up if necessary.

17. Error: "Logon Failure: Unknown Username or Bad Password"

  • Solution:
    • Verify Credentials: Ensure the user is entering the correct credentials and that the account is active.
    • Account Lockout: Verify that the account is not locked out or disabled.
    • Check Network: Ensure there are no DNS or connectivity issues between the session host and Active Directory.
  • Action to Take:
    • Reset the user's password if necessary.
    • Check the Active Directory for account lockouts or inactivity.

18. Error: "FSLogix Profile Cannot Be Mounted"

  • Solution:
    • Check File Share Access: Ensure the session host can access the Azure File Share.
    • FSLogix Settings: Ensure that FSLogix settings are correctly configured for the user’s profile to mount.
    • Check FSLogix Logs: Review FSLogix logs for any errors or issues that might be preventing the profile from mounting.
  • Action to Take:
    • Review FSLogix logs for specific errors and address them.
    • Verify and modify FSLogix settings if necessary.

19. Error: "Connection Time Out"

  • Solution:
    • Check Network Connectivity: Ensure that the user has a stable internet connection and that there is no network latency or blockage.
    • Check DNS Settings: Ensure that DNS resolution is functioning correctly for the Azure endpoint.
  • Action to Take:
    • Ensure the user's network is stable and check if any firewalls or DNS issues are blocking connectivity.

20. Error: "User Not Assigned to Any Host Pool"

  • Solution:
    • Verify Host Pool Assignment: Ensure that the user has been correctly assigned to a host pool in Azure.
    • Check AD Group Membership: Verify if the user is part of the correct Active Directory group that grants access to the host pool.
  • Action to Take:
    • Assign the user to the correct host pool in Azure Portal.
    • Ensure the user is part of the correct Active Directory group that has access to the host pool.


Thank you !
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