RDS Web access 2012 empty

Hi,

the RDS web became empty,

I enabled logging in %systemroot%\web\rdweb\Web.config and the log being created in %systemroot%\web\rdweb\App_Data says:

w3wp.exeWarning02014/10/24 16:37:58 [Warning] 35 Could not retrieve workspace info from the store, falling back to Web.config
w3wp.exeWarning02014/10/24 16:37:59 [Warning] 53 Could not retrieve workspace info from the store, falling back to Web.config
w3wp.exeWarning02014/10/24 16:38:02 [Warning] 44 Could not retrieve workspace info from the store, falling back to Web.config

any Ideas?