event id 21 errror source acronis true image echo

Hello Dirkdigs,

Thank you for finding time to report about the issue on Forum, we appreciate it! I understand your concern, and will be glad to assist you.

Unfortunately it's hard to say for sure what's wrong without the full log and the description of the exact steps taken. But in case the error doesn't affect any operation, and you're creating a password-protected and encrypted backup archive, then the error can be safely ignored. We have it described in the Knowledgebase, feel free to check this article for more details.

Should this error eliminate any technical issue, then the issue requires investigation. Please gather Acronis Info and contact support directly with the information attached. Keep in mind that should there be any procrastination with the reply, you can always specify us the case number. We will do our best to speed up the process.

Should you need anything else or have any further questions - feel free to contact us at your earliest convenience, we will be happy to help you!

Thank you!