The error is so annoying as a user cannot narrow it down to one specific cause or how to resolve it. It affects individuals, businesses, and organizations that rely on collaborative Microsoft apps to run their daily operations. The error does not also spare developers who integrate different APIs. Sometimes, users can get two main error messages that almost mean the same as shown below:
Sorry, but we’re having trouble signing you in. AADSTS90100: login parameter is empty or not valid.Sorry, but we’re having trouble signing you in. AADSTS90019: No tenant-identifying information found in either the request or implied by any provided credentials.
From the error message, it is clear that the issue is about Microsoft account login problems. Login errors are easy to fix but AADSTS90100 seems to be nagging to many users.
Why do I get the sign-in error AADSTS90100?
There are several possible reasons why you get the error code AADSTS90100 when trying to log in to Microsoft, Outlook, etc. According to Jennifer Shi, a Microsoft Agent, and a moderator, the error can be caused by browser issues, cache, or cookies, as some users have no issue when logging in using the private tabs. Other possible causes of ADSTS90100 error are:
Tool servers are down. Sometimes, the servers of the app or tool you are trying to access might be down causing you to have login issues. This is a temporary issue and most times the servers work almost seconds after.Outdated or corrupted browser cache. If your browser has broken or outdated browsing data like cache and cookies, you will have logging issues like the AADSTS90100 error.Incorrect account credentials. Most likely, your company might have made some changes to your account and you are trying to access it using old details or permissions. Also, if you access the app using different user accounts, there can be technical issues that trigger the login error.Faulty app installation. If you are accessing your account using a Microsoft app on Windows, the issue could be app files not working properly or they are damaged. This is quite common in different apps but is easy to fix by reinstalling or resetting the affected app.
These are just the common reasons why you get the error but there could be other account-specific issues that can be addressed at a personal level. Let us now look at how you can fix the problem.
How Do I Fix the ‘AADSTS90100 Login Parameter is Empty or Not Valid’ Error?
To fix the ‘AADSTS90100 login parameter is empty or not valid’ error, try to log in again after a minute and see if it will go through. Sometimes, there could be a temporary issue or you missed something. You can also reload your browser and try again. If that doesn’t work, try the following solutions to fix the error:
1. Perform preliminary solutions
If no preliminary workaround works for you, try the more advanced solutions below.
2. Clear browser cache and cookies
2.1 In Chrome
2.2 In Edge
2.3 In Firefox
3. Reset the affected app cache
For this solution, we will use Microsoft Outlook as an example. Tip: Use the same process for other apps. However, the only difference is the file path.
4. Reset network settings
5. Reinstall or repair the affected app
