BPOS to Office 365 Transition Issues: Can’t Access SharePoint Site CollectionsThis is the second post about issues that one of our client's found recently when they transitioned from BPOS to Office. You can see all of these issues in Support Stories. This time, we're talking about an issue that lead to a significant number of users being unable to access the transitioned site collections. Just to be clear, all users could access the default SharePoint Online site collection (the Team Site found at companyname.sharepoint.com). Users Can't Access Transitioned SharePoint Site Collections
So, this was a strange issue for us. After transition to Office 365, whenever quite a few users tried to open up one of the transitioned SharePoint site collections, the connection would just time out and give one of the very useful 'Microsoft Online Services is unavailable from this site...' messages. I contacted Microsoft's transition support team and they gave a terribly simply solution, outlined below.
- In Internet Explorer, on the Tools menu, click Internet options.
- Click the Security tab, click the Trusted sites zone, and then click Sites.
- Verify that the following entries are listed in the Websites list: