Knowledge Base

This article applies to:

• Acronis Recovery for Microsoft Exchange

Symptoms

1. Using Acronis Recovery for Microsoft Exchange, you are performing a mailbox backup;
2. The operation fails with one of the following error messages:

   Method ATTACH_BY_(2) is not supported
   Method ATTACH_BY_(3) is not supported
   Method ATTACH_BY_(4) is not supported

Cause

Acronis Recovery for Microsoft Exchange does not support the following attachment backup and restore methods:

• ATTACH_BY_REFERENCE ((ULONG) 0x00000002)
• ATTACH_BY_REF_RESOLVE ((ULONG) 0x00000003)
• ATTACH_BY_REF_ONLY ((ULONG) 0x00000004)

Solution

There is no solution.

More information

See also Microsoft MSDN Article: PidTagAttachMethod Canonical Property.