Try reinstalling OS Deploy Server and switching from multicast to unicast to solve the issue

This article applies to:

• Acronis Snap Deploy 3

Symptoms

1. You have a master image, a deployment template and target machines booted from Acronis Bootable Media or Acronis PXE and ready for deployment;

2. You start the deployment, but the operation fails with the following error message:

   Specified session ID not found

   View sample log.

Cause

A network or hardware specific issue.

Solution

1. Make sure you are using the latest build of the product. See Downloading the Latest Build of Acronis Software;

2. Make sure this is not a network hardware issue. Try using a different switch/router;

3. Reinstall OS Deploy Server;

4. If you are using multicast (default), switch to unicast:

   • Connect Acronis Management Console to OS Deploy Server;
   • Click Templates -> Edit Template;
   • On the Options screen click Network utilization and select Unicast:

     

5. Try performing the deployment again.

If the issue persists, please contact Acronis Support with a reference to this article and the following diagnostic information:

• Acronis Snap Deploy Agent logs with the logging turned on. See Collecting Acronis Snap Deploy Agent Operations Log;
• Network tracing logs during the deployment operation. See Collecting PCAP Logs;
• The OS Deploy Server folder:
  • Windows 2000/2003/XP: /Documents and Settings/All Users/Application Data/Acronis
  • Windows Vista/2008: /ProgramData/Acronis
• Windows System Information File;
• IP Address of OS Deploy Server and target machines (to which deployment is attempted).

More information

See also Acronis Snap Deploy Deploys Images Only to Several Computers from the Chosen Pool.