Azure Virtual Desktop: Intermittent Freezing — Users Experience Random Session Hangs

Question

Azure Virtual Desktop: Intermittent Freezing — Users Experience Random Session Hangs

ClintonWilson-6317 0

Problem description

I am experiencing intermittent session freezes in my Azure Virtual Desktop environment. Multiple users across different departments connect via the Remote Desktop client, and their sessions occasionally become unresponsive or freeze without any clear pattern or triggering application. Once disconnected, users can log back in without issues, but the freezing disrupts productivity.

Environment

Azure Virtual Desktop with a multi-user host pool, Windows-based, domain-joined session hosts in a single Azure region, accessed via Remote Desktop client.

What I've already tried

I have reviewed the environment setup and confirmed that the session hosts are properly configured. However, I have not attached any diagnostic logs, network traces, or performed detailed troubleshooting steps as of now.

Current status

I am seeking guidance on how to diagnose the root cause of these intermittent freezes and what diagnostic steps or logs I should collect to resolve the issue.

Prasad Chaganti 785 Reputation points Microsoft External Staff Moderator

2026-09-09T17:27:58.4566667+00:00

Hello ClintonWilson-63,

The current information is not sufficient to identify the root cause because intermittent AVD freezing can involve the client network, session-host resource usage, the AVD agent, or an application.

For the next occurrence, capture the affected user, session-host name, exact timestamp and time zone, client version, and whether other users on the host were affected. Configure AVD diagnostics with Log Analytics and review Azure Virtual Desktop Insights and Connection Network Data around that timestamp. Check round-trip time, bandwidth, CPU, available memory, disk performance, and Event Viewer entries from WVD-Agent, WVD-Agent-Updater, RDAgentBootLoader, and MsiInstaller.

Also test whether the issue follows a specific host, user, client network, client version, or application. If you can provide one sanitized freeze timestamp together with the corresponding host, network, performance, and event-log data, the investigation can be narrowed down further.

If any logs need to be uploaded, please use a private message.

Referenced documents:

https://learn.microsoft.com/en-us/troubleshoot/azure/virtual-desktop/troubleshoot-set-up-overview

https://learn.microsoft.com/en-us/troubleshoot/azure/virtual-desktop/troubleshoot-agent

https://learn.microsoft.com/en-us/troubleshoot/azure/virtual-desktop/troubleshoot-connection-quality

Your answer

Prasad Chaganti 785 Reputation points Microsoft External Staff Moderator

2026-09-09T17:27:58.4566667+00:00

Hello ClintonWilson-63,

The current information is not sufficient to identify the root cause because intermittent AVD freezing can involve the client network, session-host resource usage, the AVD agent, or an application.

For the next occurrence, capture the affected user, session-host name, exact timestamp and time zone, client version, and whether other users on the host were affected. Configure AVD diagnostics with Log Analytics and review Azure Virtual Desktop Insights and Connection Network Data around that timestamp. Check round-trip time, bandwidth, CPU, available memory, disk performance, and Event Viewer entries from WVD-Agent, WVD-Agent-Updater, RDAgentBootLoader, and MsiInstaller.

Also test whether the issue follows a specific host, user, client network, client version, or application. If you can provide one sanitized freeze timestamp together with the corresponding host, network, performance, and event-log data, the investigation can be narrowed down further.

If any logs need to be uploaded, please use a private message.

Referenced documents:

https://learn.microsoft.com/en-us/troubleshoot/azure/virtual-desktop/troubleshoot-set-up-overview

https://learn.microsoft.com/en-us/troubleshoot/azure/virtual-desktop/troubleshoot-agent

https://learn.microsoft.com/en-us/troubleshoot/azure/virtual-desktop/troubleshoot-connection-quality