For customers that use still Basic for some or all the affected protocols*, we are not touching authentication settings for those protocols (for the time being). The ProcessĪs we’ve said before, we’re only currently planning to turn off Basic Auth for those customers who are not using it. Over the last few months, we have been building the supporting process and tools we need to do that at scale, and now we’re ready to start rolling it out. Many of them don’t know Basic is enabled, and the risks that it presents – so we are going to do our bit to help secure their data by turning it off for them.

We have millions of customers who have Basic Auth enabled in their tenant, but only use Modern Auth. It’s been a few months since our last update on Basic Authentication in Exchange Online, but we’ve been busy getting ready for the next phase of the process: turning off Basic Authentication for tenants that don’t use it, and therefore, don’t need it enabled. Update: For latest information related to basic authentication in Exchange Online, please see Basic Authentication and Exchange Online – May 2022 Update.

Microsoft activesync tool