Backups are failing with "connection was forcibly closed by the remote host" error
  • Support Customer
    0
    Backups are currently failing. Error message reads:

    Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host.

    We have had no backups for a while.
    Support Customer Options
  • Ted Kopylovskiy
    11
    This error is usually caused by the antivirus/firewall interference.

    Make sure that there is no antivirus/firewall software on the machine or its network environment preventing connections to/for:

    TCP ports:
    - 80
    - 443

    Addresses (the first four of them are storage specific - choose the ones you use):
    - *.s3.amazonaws.com (full list of endpoints can be found here)
    - *.microsoft.net
    - www.googleapis.com
    - api.backblazeb2.com
    - mspbackups.com

    Executables:
    - CloudBerry Backup.exe
    - Online Backup.exe - name can change if you are using rebranded software
    - CBBackupPlan.exe
    - Cloud.Backup.Scheduler.exe
    - cbb.exe
    Ted Kopylovskiy Options
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