Backup Software

Failed to prepare guest Veeam Guest Agent is not started

Let's take a look at troubleshooting the Veeam error Failed to prepare guest Veeam Guest Agent is not started by looking at VMware tools state.

Highlights

  • If you run into an instance where you can’t stop a service and it is hung in the stopping state, you can find the PID the service is using and then kill the process which will kill the service as well.
  • If you run into the error Failed to prepare guest Veeam Guest Agent is not started, looking at services and especially VMware Tools state is a great place to start.
  •  When I attempted in this case to restart the VMware tools service, it failed to start in a timely fashion.

If you run into the error in Veeam “Failed to prepare guest Veeam Guest AGent is not started”, often there is an issue with the VMware Tools service.  If VMware tools is in a bad state, when application aware is enabled, you will see issues with the backup job including the aforementioned error.

Failed to prepare guest Veeam Guest Agent is not started

When looking through the event logs of the server in question that had issues with the Veeam backup, I found errors in the event logs for VMware tools service.

vbrhot02

Notice on the backup job for this particular VM, we see the warning “VMware Tools are not running. Guest processing skipped” as well as the “Failed to prepare guest for hot backup. Error: Veeam Guest Agent is not started” error.

vbrhot01

Resolution

The resolution to the issue above for me was to restart the VMware tools service.  When I attempted in this case to restart the VMware tools service, it failed to start in a timely fashion.  However, manually attempting to start it was successful.

Restart-Service "VMware Tools"

If you run into an instance where you can’t stop a service and it is hung in the stopping state, you can find the PID the service is using and then kill the process which will kill the service as well.  Find the PID number using the command below and then kill it.

 

 

sc queryex VMTools

taskkill /f /pid <PID number>

Other troubleshooting VMware tools may also be uninstalling VMware Tools and then reinstalling.

Thoughts

If you run into the error Failed to prepare guest Veeam Guest Agent is not started, looking at services and especially VMware Tools state is a great place to start.  Once you have made sure VMware Tools is in a good state – service is running, no errors in event viewer, you should be able to kick off the affected backup job and it should complete successfully with application aware settings turned on.

Subscribe to VirtualizationHowto via Email 🔔

Enter your email address to subscribe to this blog and receive notifications of new posts by email.

Brandon Lee

Brandon Lee is the Senior Writer, Engineer and owner at Virtualizationhowto.com and has over two decades of experience in Information Technology. Having worked for numerous Fortune 500 companies as well as in various industries, Brandon has extensive experience in various IT segments and is a strong advocate for open source technologies. Brandon holds many industry certifications, loves the outdoors and spending time with family.

Related Articles

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.