S3 Backup may fail after upgrade to v2.6 with the error Error Workers could not be launched

S3 Backup may fail after upgrade to v2.6 with the error "Error - Workers could not be launched"

S3 Backup may fail after upgrade to v2.6 with the error "Error - Workers could not be launched".
This issue may happen if subnet is set to "Any" in the worker configuration.

The following errors may be logged in the Backup Log:
Info - Starting copy to S3
Error - Failed to launch worker in region US East (N. Virginia)
Error - Workers could not be launched
Error - Backup copy failed


The following errors may be logged in the CPM Server logs:
ERROR:  launch_instance(worker_utils.py:98)  Failed to launch instance
Traceback (most recent call last):
  File "./cpmserver/cpm/workers/worker_utils.py", line 89, in launch_instance
  File "./common/aws_utils.py", line 1626, in call_boto_with_retry
ClientError: An error occurred (InvalidParameter) when calling the RunInstances operation: Security group sg-12345678 and subnet subnet-98765432 belong to different networks.
ERROR:  launch_worker(worker_utils.py:361)  Failed to launch worker instance


If you encounter this error, please upgrade to the latest  2.X.X version.

Reference defect number – N2WS-8463, fixed in v2.6.0a
Link to Release Notes and the latest patch – https://support.n2ws.com/portal/kb/articles/release-notes-for-the-latest-v2-6-x-cpm-release