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Update Acronis Build 6571 - Update fails

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I am trying to install update Build 6571 on Windows 7 Professional Dell Optiplex 9020 Core i7 with 16GB RAM and 500GB hybrid drive and keep getting the following error message -

Update Failed

Product: Acronis True Image 2016
Build: 6571
Date: 15/06/2016
Time: 5:10:19 PM
More info: Acronis Knowledge Base
   
Error details: Installation has failed. Fatal error during installation

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Acronis True Image still works on the PC but keeps prompting me to update. Each time I try to update I get the sameerror message. Can anyone help me please.

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Stephen,

There can be several reasons why any of the recent updates to ATIH 2016 will fail - some have been proven to be caused by various security programs 'interfering' with the install, i.e. Avast, Norton, Bitdefender have all been named by users.  

The other reason has been doing the upgrade from within the ATIH GUI using the option it gives to upgrade - this has always worked fine for my systems, but others have found it problematic but have succeeded by downloading the full install program from their Acronis Account and running it without ATIH being active.

The failsafe method is neither of the above helps, is to do a clean install of ATIH as per the steps below:

Perform a clean install of ATIH 2016

First uninstall the program via the Control Panel (or use an uninstaller such as Revo).

Run the Acronis Cleanup Tool (link in my signature below), then restart the computer.
Note: The KB document for the Cleanup Tool refers to checking for entries in the Windows registry - I have ignored this step on the occasions I have used it with no detriment, though if making changes to the registry, I strongly advise either exporting the registry before the change(s), or create a System Restore point, or image the drive for protection.

Reinstall the ATIH software (download a fresh copy from your Acronis Account if needed or if you don't have the latest build version installer).  Run the install as an Administrator (right-click on the installer to take this option).
It is also recommended to suspend your security programs (antivirus, anti-malware etc) during the install as these programs can cause Access Denied errors for the Acronis installer program.

Note 1: If you have purchased an Upgrade version of ATIH 2016 you will be asked for two serial numbers during the install - one for 2016 and one for the previous version that the upgrade is based on, i.e. 2015.

Note 2: The cleanup tool will remove all your backup tasks and task history.  If you want to protect this information, then open C:\ProgramData\Acronis\TrueImageHome\ in Windows Explorer - this may be hidden on some systems - if so, go to the Folder option in the View pane and enable hidden files & folders).

Save a copy of the Database and Scripts folders to another location to restore back later.

Note 3: In order to restore the above folders & contents, you must stop all Acronis Services & Programs else you will encounter locked files in the Database folder.