Solving a problem with error code 1722 (RPC server is unavailable)

The user account, under which Acronis Managed Machine Service is running, has no Back up files and directories and Restore files and directories privileges

By analyzing schedreport.txt you can find out name and SID of the user who scheduled and ran the task, as well as the name and time and date of when the task was executed.

Sample of a successfully executed task

Acronis Backup & Recovery 10 tasks are incompatible with Acronis Backup 11.5


  1. You have a backup task running;
  2. The backup task is stopped or is canceled;
  3. The displayed status is Succeeded with warnings:


This is a known issue.


This will be redesigned in future.


It is recommended to use administrator credentials (user is better to have at least Backup Operators or Administrators membership) when you create a backup plan.

When you create a backup plan, the product by default sets the access credentials of the user under which you are currently logged in on the current machine or connect to a remote machine with Acronis Agent.

To set the credentials explicitly, you will need to click Show plan's credentials under Plan parameters:

This means that the backup task creation has failed due to an external factor. In the log, look for the lines preceding the error message to find out the cause

Delete the redundant task script using Schedmgr

Make sure you have the latest Virtual Appliance hardware and that you have no more than two disks

Do not run Acronis Managed Machine Service under Local System account: this account does not have permissions for network access

List of Acronis Backup & Recovery 11 services in Windows

Starting a task while backup script for this task is not created or missing, the task will fail with "Error While Opening Script File"

Acronis Managed Machine サービスをローカルシステムアカウントで実行しないでください。ローカルシステムアカウントには、ネットワークにアクセスするためのアクセス許可がありません


You cannot run two tasks at the same time. As a workaround, restart the product to see the task progress.

Depending on the product you have, select a section:

Create two separate tasks if you are planning to back up local and network folders



Acronis スケジューラマネージャは、スケジュールされたタスクおよび Acronis スケジューラ2 サービス自体を管理できるコマンドラインユーティリティです。

ここに記載した手順は、Windows のすべてのバージョンおよびエディションに適用されます。


Acronis スケジューラ2 サービスの管理

Ignore the message or make sure the backup task script file is not locked

Utility that allows you to manage scheduled tasks and collect reports in Acronis products

You receive an email notification about a failed backup.

You check Acronis True Image user interface and all indicates that all backups have completed successfully :

  • green check box is displayed on each backup
  • backup completion confirmation is displayed under Activity tab for each backup
  • a new recovery point under Recovery tab is added as date and time of a successful backup (right upper corner)

On one operating system regular file-level or disk-level backups and Microsoft Exchange Server backup tasks are always queued and performed one by one by the service_process.exe process.

The tasks cannot be run simultaneously.


Start the Acronis Scheduler2 Service to fix the issue

Update Acronis Scheduler and recreate the tasks

Schedmgr を使用して不要なタスクスクリプトを削除します


  • Acronis Backup & Recovery 10
  • Acronis Backup & Recovery 11


Acronis Backup & Recovery の処理ログに、次のようなエラーが表示されます。

A task with ID '52245B54-FC40-4A25-8FEA-F3FF1965F601' does not exist