edgeAADSTS50196: The server terminated an operation because it encountered a client request loop. Please contact your app vendor.

I did clear the browser cache using Control Panel (I like prefer) and I also ran the Disc Cleanup utility in order to clear as many unwanted files as possible. In my case, I do not think either one of those had much effect.

    I think the problem was that at some time in the past I had a M't account which had been inactive for years. When setting up a new computer I entered a phone # which differed from the one that M't "had on file." Without having access to anything M't, it was only with persistence and luck that I discovered the mismatch. With more luck, the page that showed the mismatch, also gave me the option to delete old # and reenter the correct #(tedious process  -- texted codes, e-mailed codes, and 2 password resets.)

    My deduction is that when the M't system was presented with conflicting data, it rejected both because it was unable to determine which was true and which was not true.

    I have not had any Issues with AADSTS50196 since

Hello I am an independent advisor for the Microsoft community. Have you tried clearing your browser cache of downloaded files and cookies? Depending on what browser pops up the instructions vary. If you need more help in resolving this issue please reply with the name and version of the browser you are using.

I have the problem  the browser Iam using is an older version of Internet explorer my versions of Edge I am using keep freezing  and crashing from the Dev ones to regular downloaded ones I like edge its sometimes a pain having to close and restart the browser but hey that's why we have community pages and Dev  pages to figure the Bugs and issues with the programs and try to give information to other members and inquire there knowledge and help to resolve our issues nothing is ever perfect so I will keep pushing forward Thanks all for always helping me and everybody else.

I am not a computer whiz and I cannot solve everyone's problem with this error code!!!!!

    I had a problem with AADSTS50196 after setting up a new computer. I could not access anything M't. Through persistence and luck I accessed what appeared to be an old Microsoft acc't and I discovered that the phone# differed from the I entered when setting up my new computer. On that page was the option to delete my old # and enter the new # (texted codes, e-mailed codes, 2 password resets) which I did. My thoughts are that when the M't system was presented with conflicting data it rejected both because it could not determine which was true and which was not true. 

    I shared my success and deduction in the hope that it could give some insight to others in how to solve their own problem.

    Microsoft doesn't know how to fix this except to recommend to clear the browser cache. I cleared the browser cache through Control Panel (better options) and ran disc cleanup to delete as many files as I could. If M't, who are responsible for W's and W's apps doesn't know how to fix this, how the hell am I supposed to know????

Hello Greg-B_600,

I am a computer idiot & know nothing about a pc! I have taught myself everything including word & excel including forula's.

I thank you for your reply as the problem has returned & will not go away therefore I will give what you said a shot.

I despise microsoft & HP! Both are complete junk!!! The microsoft support are a bunch of idiots!!! So far every problem that I have had In had to fix on my own because they are absolutely no help whatsoever!!!!

They are all about $$$ & try to charge you $99. every time that you need help the last 2 times that I needed help I fixed the issue within 10 minutes.

I also despise MAC & Iphones however I may be switching to them because of the greedy-ness & incompetence of microsoft!!!!!

be good use of my problem

Request Id: 90a44457-b2f0-40a5-a4d9-a17221d75001

Correlation Id: 56b0f374-f1ca-496a-9436-7666536f67f1

Timestamp: 2020-08-27T09:26:00Z

Message: AADSTS50196: The server terminated an operation because it encountered a client request loop. Please contact your app vendor.