You can allow this behavior by allowing "services" to issue the SAS in the Windows Logon Options. These are found in the Local Group Policy Editor.
- Go to the Local Group Policy Editor (Type "gpedit.msc" in the run menu)
- Dig down to Computer Configuration -> Administrative Templates -> Windows Components -> Windows Logon Options
- Open up the "Disable or enable software Secure Attention Sequence" option
- Set it to "Enabled" and then select "Services and Ease of Access applications" below, click OK