| Event Id | 12261 |
| Source | Microsoft-Windows-Hyper-V-SynthStor |
| Description | Attachment '%3' is read-only. Please provide read/write access to add the attachment. Error: '%4' |
| Event Information | According to Microsoft : Cause This event is logged when the attachment is read only. Resolution Grant read-write access to the image Grant read-write access to the image. Verify The virtual machine with the storage attached is able to launch successfully. |
| Reference Links | Event ID 12261 from Source Microsoft-Windows-Hyper-V-SynthStor |
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