In reality, it’ll take much longer due to connection overhead and the fact that, unless you manage the process well, all of your clients will attempt to upload all of their data at the same time, causing throttling. At 10 Mbps, you’ll need nearly 49 hours of sustained upload. If you have 50 users and all of them have 4GB of mail, which would not be an unreasonable assumption these days, then you need to upload 200GB of mail. When you sign up for Office 365, you will almost certainly want to bring your existing mail and calendar data into Exchange Online, or at least some subset of it.

Your initial migration of data to the service requires a lot of bandwidth.

(Bandwidth and latency are different but related: Bandwidth is like how many lanes there are on a highway, while latency is how long it takes a car to get from point A to point B.) If your connection doesn’t satisfy either of these demands, then your users’ video and audio chats will be full of distortion and stutter. Skype for Business or Teams conferences both depend on enough bandwidth to handle an uninterrupted stream of video traffic and a connection with low latency.

Real-time audio and video conference demands a high-quality, low-latency connection.

Just two or three large attachments can saturate a 10 Mbps connection, which is a typical upload rate on business broadband connections these days. Outlook is a very chatty program, and large attachments are still a preferred way of sharing documents and other files.

Regular use of Outlook eats up a lot of bandwidth.

Enterprises with fast, dedicated fiber connections can have a vastly different experience than a small office running over a 5 Mbps DSL circuit over copper, for several reasons: One of the major pain points that some Office 365 users suffer from is a lack of bandwidth - more specifically, insufficient upstream bandwidth from the client site to the nearest Microsoft datacenter. Microsoft Support and Recovery Assistant for Office 365 Understanding Bandwidth Requirements and Issues

It will go through an installation process, prompt you to accept a license agreement, and then present you with the main screen below, which asks you to select the Office 365 app you’re experiencing problems with, such as Outlook, OneDrive for Business or SharePoint:įigure 1. Before you can use the Support and Recovery Analyzer, you need to download it from. The Microsoft Support and Recovery Analyzer can run diagnostic tests to identify and, in some cases, automatically resolve issues with local application configurations.

Using Microsoft Support and Recovery Analyzer for Office 365

Office 365 troubleshooting guide