Symptoms

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

Cause

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.

Solution

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