69208: Acronis Cyber Protect 15: error "At least two drives must be specified in multistreaming options" when editing or creating a protection plan after upgrade

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Last update: 07-07-2021


You upgraded from Acronis Cyber Protect 12.5 to Acronis Cyber Protect 15.

When you try to edit an existing protection plan or create a new plan with Backup module enabled, the following error is displayed:

At least two drives must be specified in multistreaming options


Issue in the product: Tapes entry in the registry contains invalid value after the upgrade.

This issue will be fixed in future versions of the product.


As a workaround, rename the faulty registry key:

  1. Open Windows Registry: Start -> Search -> regedit.exe
  2. Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Acronis\AMS\Configuration\Protection\Backup\Tapes and rename this key, e.g. to Tapes111