Shadow Folder Service unable to connect to the server

[hwapdc]

Hi
After upgrade to version 10 we suddenly gets:
The Shadow Folder Service was unable to connect to the server. Please enter the login to be used by the Shadow Folder Service.

In vault log we see this:
----08-05-2019 16:09:28 admin--pdc-1645.pdc.xx(10.117.68.114)--SSL Enabled System.Exception: An error occurred getting shadow folder associations: Unknown status code (1027).
at VaultWebLib.ShadowFolderData.Select() at VaultWebLib.ShadowFolderData.Select()

[Tonya]

This issue was resolved offline. The log file indicated there was an invalid security token in the web.config file for shadow folders, due to a new install instead of an upgrade.

Tonya