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I'm pretty sure this isn't a Facebook problem. I can't login to Google, Yahoo, or Twitter either. Running 10.13.6 Beta, but have had the problem for a few updates already.
 
I’m not entirely sure how I can test the difference between Mac and Windows because I can login to Facebook using my browser on either OS. The problem appears to happen only in “Internet Accounts” under SysPrefs.


Another test I did was login to Facebook using my old iPhone 5c. I entered my Facebook details inside Settings>Facebook. Low and behold, it also kept asking me to re-enter my password.


I’m positive that this has something to do with the authentication method Apple is using to connect to Facebook. Both companies should talk to each other and investigate the problem. Again, re-installing High Sierra didn’t fix my problem.
[doublepost=1535398334][/doublepost]Do as was suggested above go to system preferences, then internet accts and make facebook inactive or remove. it will stop
 
[doublepost=1535398334][/doublepost]Do as was suggested above go to system preferences, then internet accts and make facebook inactive or remove. it will stop

You might as well just remove it. Apple is pulling integration support for Facebook and Twitter, so they aren't going to bother fixing this issue. They are completely gone from Mojave. It stinks, but it is what it is. http://www.idownloadblog.com/2018/06/06/mojave-facebook-twitter-integration/

I haven't hit-up the iOS betas, but it's my understanding that they pulled integration for iPhone/iPad as-well.
 
You might as well just remove it. Apple is pulling integration support for Facebook and Twitter, so they aren't going to bother fixing this issue. They are completely gone from Mojave. It stinks, but it is what it is. http://www.idownloadblog.com/2018/06/06/mojave-facebook-twitter-integration/

I haven't hit-up the iOS betas, but it's my understanding that they pulled integration for iPhone/iPad as-well.
[doublepost=1535399750][/doublepost]Worked fine for me no more pop ups or problems with this issue
 
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