Exchange Mailbox Restore with Kroll Ontrack (Kroll Restore)


1. Scope

This article describes the procedures to obtain a license, install, configure, and use Kroll Ontrack PowerControls for Exchange. This tool gives you the ability to restore Exchange mailboxes. 

The Datto Exchange Mailbox Restore process is only compatible with Kroll Ontrak PowerControls for Exchange Version 7.3. It is not compatible with newer versions of the program. To check your installed version of Ontrak PowerControls, launch the program, and select Help → About. If you are using an incompatible version, install version 7.3 before proceeding by following the steps in the Installation Procedures section of this article.

To restore a SQL server, see Granular SQL Restore With Ontrack PowerControls.

1.1 Index

If you are restoring from an ALTO 3, proceed to Section 2: Licensing Information. If you are restoring from any other ALTO appliance that is not on per-agent pricing, see Exchange Mailbox Restore With Kroll Ontrack For ALTO (Kroll Restore) to get started.

2. Licensing Information

The Kroll Ontrack PowerControls for Exchange licenses bundled in the Datto SIRIS are for Exchange Databases for 500 users or less.

Kroll licenses expire after a set period. If the license on your device reads as expired, you'll need to provision one from the same location. There is no additional charge for this license on SIRIS devices; it is provided by Datto.

ALTO users not on per-agent pricing must purchase this service at an additional cost. Please contact your Sales Executive, or navigate to the Purchasing & Billing → Service Billing category on the Datto Partner Portal if you need to purchase a Kroll license for an ALTO appliance.

If your Exchange Database contains more than 500 users, please contact Datto Technical Support to start a recovery. The recovery may take hours to days, depending on the size of the database. If you are over 500 users, be sure to note the amount of mailboxes you need, as shown in the figure below.

Users who are still using Kroll 6.x versions should upgrade to newer versions of the Ontrack PowerControls software, available for download from your Datto device.

3. System Requirements

To perform Exchange restores, Datto appliances use Kroll Ontrack PowerControls version 7.3. Newer versions of this software are unsupported.

3.1. Software

Supported Operating Systems:

    • Windows Server 2008
    • Windows Server 2008 R2
    • Windows Server 2012
    • Windows Server 2012 R2
    • Windows 7
    • Windows 8
The operating systems listed above are required to have the latest service packs installed. 32-bit and 64-bit versions of the above operating systems are supported.

Supported Source Microsoft Exchange Database (offline):

The following versions of Microsoft Exchange Server are supported as offline source databases:

  • Microsoft Exchange Server 2000
  • Microsoft Exchange Server 2003
  • Microsoft Exchange Server 2007
  • Microsoft Exchange Server 2007 through SP3
  • Microsoft Exchange Server 2010 through SP3
  • Microsoft Exchange Server 2013 through SP1
  • Microsoft Exchange Server 2016

Supported Target (live) Microsoft Exchange Server:

The following versions of Microsoft Exchange Server are supported as live targets:

  • Microsoft Exchange Server 2007 through SP3
  • Microsoft Exchange Server 2010 through SP3
  • Microsoft Exchange Server 2013 through SP1
  • Microsoft Exchange Server 2016

Microsoft Office (Microsoft Outlook)

  • Microsoft Office Outlook 2007 and later (32-bit versions only).

Tip: If installing Outlook in a disaster recovery situation, just install Outlook without configuring an email, as this will suffice for this requirement. 

Note: Office 365 is not supported with Kroll Ontrack version 7.2. Only on-premise is supported for this version. Office 365 support started with version 7.3.

3.2. Hardware

  • Intel Pentium-compatible processor
  • 1024 MB RAM minimum
  • 200 MB of free hard disk space for the installation of Ontrack PowerControls
  • Monitor with 800 x 600 or higher screen resolution

4. Performing the Restore

Offsite Restore Preparation

If you need to perform a Kroll restore from an offsite recovery point, follow the steps in Mounting a Secure FTP File Restore in the Recovery Launchpad to create the cloud share. You can then use Netdrive to mount the SFTP share to a local environment with the required software installed - installation of Netdrive is described here. Alternatively, download the needed EDB file to your local environment, and instead of step 7 use the path to the EDB file's download location.  If the file is too large to download, please consider a Reverse Roundtrip.

When you have completed these steps, proceed to step 4.1 of this article.

Do not leave offsite file restores mounted for any longer than needed. Leaving restores mounted when they are not in use can affect your offsite retention usage, and may result in overage charges. 

4.1. Configuring Microsoft Office Outlook

      • Make sure that Office Outlook has been installed and that it has been run once.
      • Set up an email account on an Exchange Server.

    • For versions of Outlook that distinguish between Corporate Email, use Corporate Email when configuring Outlook.
  • Run Outlook again, and connect to the Exchange Server.

4.2. Obtaining Kroll License

ALTO USERS: Download the Kroll installer from our servers, and skip to Step 4.3.

Click on the Advanced tab, and select the Granular Restore tab of the Datto web interface.

4.3. Kroll Licensing for previously installed instances

If you are following this procedure for a previously installed version, be sure to download the license.ini file into the folder in which Kroll had been previously installed. The default path for Kroll installations is: C:\Program Files (x86)\Kroll Ontrack\Ontrack PowerControls\. Then, proceed to step 7. Otherwise, proceed to step 5.

5. Install Ontrack PowerControls

  • Install and configure Outlook as described in Configuring Microsoft Office Outlook.
  • Turn off any disk utility or antivirus program running in the background.
  • Run PC72Universal.exe which can be downloaded from the Datto appliance's Advanced  → Granular Restore tab.
  • Select Install Ontrack Power Controls to start the installation process.
Example: Selecting "Install Ontrack Power Controls"

There may be new dependencies that are required to use the 7.2 version of the software. You will be prompted to install C++ Libraries. Select OK to install them.

Example: Installing Microsoft C++ Runtime Libraries

At the first InstallShield Wizard Window click Next.

Example: Selecting Next to start the installation

Click Yes to accept the EULA.

Example: Accepting the EULA

Enter User Name and Company Name, and click Next.

Example: User Name & Company Name entered, Next button

Select the destination folder, and click Next.

Example: Installation Path Selected & Next button

Click Next.

Example: Next button

Click the OK check box, and click Finish.

Example: OK checkbox selected and Finish button

Installation of Ontrack PowerControls for Exchange is now complete, however application of the license file will need to be performed.

6. Install the License File

  • Launch Ontrack PowerControls for Exchange
  • Upon first launch of Ontrack PowerControls for Exchange you will be notified License File Not Installed.

In this window, click on the button License Info...

Example: License Info... Button

From the License Information Window,  click on the button with the three dots to open a window to browse to the license.ini file. Then, click Close.

Example: Path to the License file downloaded Datto Admin Tab.

7. Performing Exchange Message Level or Mailbox Level Restoration

Mount Recovery Point on the local Datto Web Interface

Click Restore and select your recovery point.

Select to create a SAMBA share.

Navigate all the way to your EDB file's location in this mounted recovery point's Share and verify the path. Note this path, as it will be used in the next section.

8. Configuring the Kroll Ontrack Data Wizard

Launch shortcut for Ontrack PowerControls for Exchange.


Example: Kroll Shortcut

On the first screen, click the Next button.

From here, you can browse the file and folder structure of the Exchange environment. You can either browse or actually perform the restore. You can disable the wizard from starting at this time should you just want to investigate the EDB files that are selected.


Example: Initial Screen of Data Wizard Click Next

Click the Browse button located to the right of the Source File menu.


Example: Browse Button

Browse to the .edb file located in the shared directory on the Datto for the recovery point which was mounted, and click Open. It may be necessary to map the network drive via My Computer before it becomes visible for browsing.


Example: Opening the EDB file located in the mounted recovery point.

Once all three drop down boxes have auto-filled, click Next on the Data Wizard.


Example: Click Next Once All Three Boxes Populate.

Select PST File, and enter in the path in which the PST file should be exported. Then, click Next.


Example: Location of the local PST file that Outlook will use

Wait a few moments, and then click Finish.


Example: Export of PST Successful

With the Exchange Database now available, select the mail box and export by pressing CTRL+P or right clicking and selecting Export...

The Export Mailbox Window will allow for a specific message or the entire mailbox to be exported. For specific messages select MSG, for the entire mailbox select PST.


Example: Exporting MSG

Then, select the destination path for the MSG or PST file to be exported to, and click Export.

When the export completes, click the Close button.


Example: Export Completed

The MSG or PST file may be opened with any version (after 2000) of Microsoft Office Outlook, with the exception of Outlook 2010 64bit.

Ontrack PowerControls Keyboard Shortcuts

Keyboard Shortcuts


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