71336: Acronis Cyber Protect Cloud: Troubleshooting "Fatal error during installation" by agent auto-update and remote update

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    Last update: 15-11-2022


    • Agent auto-update or remote update fails with the error "Fatal error during installation":


    During agent installation, Acronis faced an error that couldn't be solved by the installer.


    To find out the exact root cause and fix the problem, refer to the installation logs:

    • On the agent machine, open ProgramData\Acronis\InstallationLogs and find the folder that matches the date of installation attempt
    • Open the file BackupClient64.msi.log in any text editor
    • Analyze the log using the MSI technology:
    1. Search for the line "Return value 3"
    2. Check the last error logged before this line.
    • Troubleshoot the issue depending on the error message:


    More information

    Fur further assistance, contact Acronis Support