consuming a webservice in sharepoint online from our iis on-premises

Hi everybody,

Maybe I am in the wrong group or even wrong platform. I am sorry if this is the case.

We are trying to use a webservice located in our servers running iis with visual.net development. We consume the webservice in the office365 homepage for the specific user. It works great when it works. In some computers it shows the information and in other it send a cross-domain error. The strange thing is that in some cases different browsers in the same computer it behaves differently as well as the same browser and version in different computes. We have use the allow metadata in the html.

Any idea?