The portal is a failure and will be discontinued in future. Use the classic desktop instead, you will be much happier with the speed and much less problems.

Is this a recent problem?  Our portal, which has been working just fine since installed Dec 1, just stopped working this morning. Will not even open.

One of my clients has just reported that his portal is not working this morning. Any headway on this? Seems like it may be a windows update issue. What say you Sage?

yes it is a recent problem. my colleague got the msg only after he updated the chrome. i dont know if the explorer had an update too but i got the problem in explorer as well as chrome

We had a similar problem. Sage recommended using Firefox ( as IE and Chrome aren't working). It appears to work.

Unfortunately it is not wokring for us in Firefox either.  Anybody else have any suggestions?

Can anyone tell me if a fix has been found for the Sage 300 ERP Portal issue? It remains an issue for one of my customers.

If you are using Chrome 42 give this a try.

1.     In your URL bar, enter:

       chrome://flags/#enable-npapi

2.    Click the Enable link for the Enable NPAPI configuration option.

3.    Click the Relaunch button that now appears at the bottom of the configuration page.

Please read KB 52731. Also make sure the version of Chrome used is not 64 bit.

Our guy who handles our Sage product spoke with someone at Sage and they provided detailed procedures for getting chrome to work with sage. I am not sure of the steps but the portal is working again. Someone at Sage should be able to provide these steps?? I think he said it had something to do with Chrome settings and allowing pop ups. I will check if i can get the exact steps....

Try Firefox.

Thanks everyone. I now have the Sage 300 ERP  Portal working fine again in Chrome and Internet Explorer.