59818: Acronis Backup 12.5: installation takes a long time on Windows 8 and Windows Server 2012

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Symptoms

  1. You are installing Acronis Backup on a Windows 8-based or Windows Server 2012-based computer.
  2. Installation stays at 96% for up to 20 minutes. CPU is highly loaded.

Cause

A Windows 8-based or Windows Server 2012-based computer experiences high CPU usage when it runs a Windows Update applicability scan. Additionally, the applicability scan takes longer than expected. Windows Modules Installer (TiWorker.exe) is running on the machine, which may increase the time required to complete the installation.

Solution

Microsoft released an update to fix the TiWorker issues: https://support.microsoft.com/en-us/help/2771431/a-servicing-stack-updat...

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