Outlook 2016 doesn't accept password or app password

I now cannot not log into Office 2016 Desktop at all even though I paid for it. I don't recall getting any notice they were migrating away from this but found a comment here on this forum you need to install their web app. I wish MS would have sent out an email rather than trying to figure out how to fix it.

Most people use multiple email accounts and having to log into all of them with your user name and password was utterly frustrating. So I capitulated and now using the web based app.

Same here. At least they could of provided some kind of patch too. Outlook for desktop functionally is not same as outlook (part of the MS Office) plus some dubious benefits of new design. That said it won't be first time Microsoft forced something on users and resisted changing it back to better way it was. What it looks like they decided to kick everybody out of older Office into subscription Office. In the end i will migrate to Mozilla. don't like desktop app.

Hi there - Sure, let me try to explain a bit. As mentioned briefly in the known issue article, there is increased levels of bad actors that attempt to do brute force password attacks which targets different accounts that generate high volumes of authentication requests while they try to find a password that works to gain entry. The Outlook.com Service has throttling in place to handle these spikes, which has the side effect of increased authentication prompts.

We will continue to adjust the throttling policies where possible trying to always balance the impact to customers while trying to ensure we are protecting our customers' accounts.

This is why we recommend moving over to OAuth when possible, to help ease and quickly improve your experience you are having.

Hi there - Yes, this is not something that is unique to Microsoft or any one email provider. This is common and many across the industry are moving this direction. I can't speak to what every provider is doing, but most will be removing the support for app passwords as well because it would leave the same security level of basic auth. It still is prime for abuse and attacks.

While the New Outlook is one option, you have others options as well. Sticking within the Outlook family you can upgrade to Outlook 2021 which does indeed support OAuth when syncing Outlook.com, get a Microsoft 365 Subscription that has the latest version of Outlook. Or you can use the web experience at outlook.com.

If those aren't viable options for you other third party mail solutions do indeed support OAuth against Outlook.com

JaviHotmail - At this time we haven't fully announced the date that Basic Auth will be going away. We wanted to give an update to potentially allow users to have guidance on what they can do to quickly get themself back into a better state. The large majority of users that are leveraging pop/imap/eas are actually using clients that support OAuth. So they can make the configuration change and see less auth prompts.

Those that are on older version of Outlook, such as Outlook 2013 and Outlook 2016 (which have ended mainstream support) will be the ones that need to move towards a newer version that does support OAuth. Again we know this is often something users need to plan for so we wanted to get that guidance out in advance.

As we look to announce full deprecation timelines, we will ensure that it is timely enough that users just don't get blocked and there is ample opportunity to get upgraded.