Article number
Affected Versions
8.0 Update 1
8.0 Update 1 Patch 1
8.0 Update 2
Source Hypervisor
Target Hypervisor

Error “Progress String Contains Error Code: DOWNLOAD_PART_ERROR. Aborting Importer VM” when Attempting Recovery to AWS

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An administrator may come across an error when trying to recover to AWS regarding a Download Error.

Root Cause

The initial "NoSuchKey" error can tend to occur as the zImporter tries to download the file right after uploading and S3 does not have the file "ready" to be downloaded quite yet. The next retry of the download should work.

However, even though there is a 12 retry limit configured, there was a code bug that caused the loop to exit after the first attempt (essentially, retry mechanism was broken).


A Failover Test/Live, Move, or Offsite Clone to AWS fails with error:

Progress string contains error code: DOWNLOAD_PART_ERROR. Aborting importer VM.

The zImporter log will report the below "NoSuchKey" error as well:

ERROR    140451173451520 S3Manager       get_file_data_from_s3_with_full_response Message: failed to get object <VM_NAME/VMDK_NAME>.vmdktmp2240manifest.xml_finalizerObject from s3 bucket. ClientError: An error occurred (NoSuchKey) when calling the GetObject operation: The specified key does not exist.. CorrelationId: c1cbaf7c-58a6-485a-95c4-d414b79fc79d


This issue was resolved in Zerto version 8.0 Update 3. Upgrading to this code version or higher will resolve the issue permanently.

If upgrading is not possible, kindly engage Zerto Support.