If an Acronis Online Backup is running when the regular backup starts, the former will automatically be canceled

Make the Acronis Managed Machine Service run under the correct user account. Check that the network share is accessible

Make sure that the network share is accessible and that the Acronis Managed Machine Service is running under an account with enough privileges

Try removing Acronis True Image Backup Archive Explorer to see if this resolves the issue

The most probable cause is that Acronis Backup Server quotas are exceeded

You are either trying to back up a free VMware ESXi using Acronis Agent for ESX/ESXi or you have not added a license to your paid version of VMware ESX/ESXi

Try disabling write caching for the USB drive to solve the issue

User account under which you are trying to run the scheduled task may not have enough rights to do the task

Delete snapman and snapman380 registry values and update Acronis drivers

When installing Acronis Agent on Windows XP/Vista Home, use an existing user account with a password

Readd the Hyper-V role and after that reedit all virtual machines and reset the network adapters

Test of the command fails because the user is impersonated differently in Remote Desktop Session. The actual command within the backup plan will be executed fine

You have entered an incorrect E-mail or password. Please ensure that you type in a correct E-mail and password for your Acronis account