Failed to open VM attachment
Challenge
Cause
12290 Microsoft-Windows-Hyper-V-SynthStor
12290 Microsoft-Windows-Hyper-V-VMMS
12140 Microsoft-Windows-Hyper-V-VMMS
12140 Microsoft-Windows-Hyper-V-Worker
12240 Microsoft-Windows-Hyper-V-SynthStor
These events are logged when the Hyper-V host or the Cluster node cannot access some of the VM virtual disks, configuration files, virtual memory, saving state or snapshot files.
NOTE: In most cases, this happens when the files are located on the shared storages (for example CSV or SMB shares).
Solution
If the file is accessible, but the events continue to be triggered in the Windows Event log, you need to contact Microsoft support for further investigation.
NOTE: For SMB shares you need to additionally configure SMB delegation on the Hyper-V side.
To enable SMB delegation, refer to the Microsoft documentation:
https://docs.microsoft.com/en-us/powershell/module/smbshare/enable-smbdelegation?view=win10-ps
More information
Couldn't find what you were looking for?
Please select a spelling error or a typo on this page with your mouse and press CTRL + Enter to report this mistake to us. Thank you!
Spelling error in text
Do you have an issue or need post-sales technical assistance?
*if you need help choosing the right product, please select "Sales" chat
Do you need guidance on the website, upgrade hints or help with your licenses/accounts?
Questions regarding your Veeam contract renewal? Contact us and learn how you can maximize your savings
Do you need additional license, pricing details, product information or have any other sales-related question?
Would you like to become our partner or do you need assistance as our existing partner?
We apologize, but this chat is not available at the moment
We apologize, but this chat is not available at the moment
We apologize, but this chat is not available at the moment
We apologize, but this chat is not available at the moment
Veeam representative will get back to you shortly.
