Forum Discussion
SharePoint Online not responding to modify any file or open any online app
we have 30 user on office365 and since 11th of march our SharePoint is totally down! the worst part of it is that Microsoft support not answering clear. none of users cant edit, create, even open s...
Your internet speed may test out fine, but it's the end-to-end connectivity/path from your client/workstation to your tenant end-points that matters. A lot of customers (large & small) run in to similar issues (high latency, dropped packets, sporadic connectivity). This is why MSFT offers a network performance analysis package.
I would take a look at, https://docs.microsoft.com/en-us/office365/enterprise/set-up-network-for-office-365, and the sub-sections (especially the info on network planning performance tuning). This will assist your organization in understanding how and where clients connect and be better prepared when talking to support.