Outlook 2016 doesn't accept password or app password

Well.... that only lasted about a day, I am back at square one again! It will not accept my credentials AT ALL today, and I cannot access email through the Office 2013 Outlook software.

Well, I finally got my popups chased away.

By not accessing hotmail in Outlook 2013. Ironic that Microsoft doesn't support Microsoft. So... I can access my hotmail accounts in anything-but-Outlook 2013/2016. In order to do this, I had to remove my Exchange accounts, change my Microsoft alias and profile, and NEVER PUT THEM BACK in Outlook 2013/2016. I must access those accounts elsewhere.

This is by design, folks. Microsoft is doing this ON PURPOSE. This is so they can charge all users indirectly for what MS promised NEVER to charge them for. One way or another, they will find a way to try to force us to use their storage, and pay them for it. To use their software and pay them for it. Except now, like gasoline, it will be a regressive charge, and one you have to KEEP PAYING. For them to increase/add to at their whim.

My advice is to stop trying to get legacy Microsoft systems to work. Stop wasting your time. Find a way to get things to work OUTSIDE of the Microsoft machine. They have no desire to help you get them working.

I will certainly be on the watch for the inevitable class action.

Well.... that only lasted about a day, I am back at square one again! It will not accept my credentials AT ALL today, and I cannot access email through the Office 2013 Outlook software.

I'm not sure which one of these things worked, but this morning I was once again unable to connect to my Hotmail account. I did these two things, and it has not prompted me for the credentials since!

Exit Outlook, Open Control Panel, and select Mail.

Click Show Profiles, select your Outlook profile, and then click Properties.

Click E-mail Accounts, Select your email account, and then click Change.

Click the More Settings button

Select the Security tab, and in the Logon network security list select Anonymous Authentication, and then click OK.

This option was grayed out and unavailable for me, so I went back to the Account settings window, selected my Hotmail account, then clicked REPAIR. Then I went to edit the registry to enable Anonymous Authentication that way:

HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Outlook\Profiles

Under the profile, locate and expand the 9375CFF0413111d3B88A00104B2A6676 key.

Under the 9375CFF0413111d3B88A00104B2A6676 key, you see a subkey for each account in your profile. Select the first subfolder (00000001), and then examine the data of the Account Name binary value by double-clicking the value. Repeat this process until you find the Account Name value that includes your email address. For example, ******@hotmail.com under the \00000004 subkey.

Under that subkey, locate the Service UID binary value. It represents a GUID (for example, c3 d1 9a 7b 80 1b c4 4a 96 0a e5 b6 3b f9 7c 7e).

Locate the subfolder in your profile that matches the GUID value identified and examine the 01023d0d binary value. It represents a GUID (for example, 5f cf d5 f1 ba 5c 6f 45 b3 57 cc 5e 0d 16 94 58).

Locate the subfolder in your profile that matches this GUID value identified and examine the value of the 00036619 binary value. This value determines whether Outlook is using Anonymous Authentication. 01 f0 00 80 = Anonymous Authentication, any other value represents an authentication method other than Anonymous.

FOR ME, I did not have this 00036619 subkey, so I created it with that AA binary value. No problems since!!

Yip and it worked for a few weeks till now.

Yes, I have gotten this one also in addition to these others AFTER switching to OAuth2 using IMAP in Thunderbird...