Windows 10: Cannot Sign into Microsoft Account

 Microsoft is one of the most important roles of the Windows 10 system because you cannot do

much stuff without an MS account. But some users are complaining that they cannot log in to
their MS account. Sometimes problems can show and stop you from signing in. So, if you are
also facing this issue, then here are a few instructions displayed below.
Modify Group Policy Settings to Fix the Microsoft Account Login Issue
on Windows 10
In case of having no idea of modifying group policy settings, then you must go through the
whole procedure stated below: 

1. Navigate to the Search section on your system.
2. Then insert ‘group policy’ and press the Enter key to launch the ‘Edit group policies’
   screen.
3. Go to the pursuing path: Computer Configuration > Windows Settings > Security Settings
   Local Policies Security Options > Accounts: Block Microsoft Accounts.
4. You should locate the ‘Accounts: Block Microsoft’ accounts and then right-click on them.
5. Later, reach the Properties option and click on it.
6. Go to the pull-down menu and then choose the’ This policy is disabled’ option.
7. Now, hit on the Apply and OK button to store the changes.
   Edit the Registry to Fix the Microsoft Account Login Issue on Windows
   10
   In case of having no idea of editing the registry, then you must go through the whole procedure
   stated below: 
8. In the Windows search section, input ‘regedit’ and hit the Enter button to invoke the
   Registry Editor.
9. Go to the pursuing path:
   HKEY_USERS.DEFAULT\Software\Microsoft\Identity\CRLStoredIdentities\
10. You will locate the account there, right-click on it, then pick the ‘Delete’ button.
11. Later, shut the ‘Registry Editor’ screen, go to the ‘Settings and select Accounts’ option,
    and click on it.
12. Now, attempt to add the account once again.
    Install the Newest Updates to Fix the Microsoft Account Login Issue
    on Windows 10
    In case of have no idea of install the newest updates, then you must go through the whole
    procedure stated below: 
13. Hold the Win + I hotkeys simultaneously over the keyboard to launch the Settings
    application.
14. Once you get the settings, click on the ‘Update & Security’ option.
15. Finally, hit the button of ‘Check for updates’ button.’
    Remove the Details Directory to Fix the Microsoft Account Login Issue
    on Windows 10
    In case of having no idea of removing the details directory, then you must go through the whole
    procedure stated below: 
16. Hold the Win + R hotkeys simultaneously over the keyboard to launch the Run prompt.
17. Then input ‘%localappdata%’ into it and select the OK button.
18. Go to the directory of Microsoft and delete the folder of Credentials.
19. Now, reboot the system.
    Make a New User Account to Fix the Microsoft Account Login Issue on
    Windows 10
    In case of having no idea of making a new user account, then you must go through the whole
    procedure stated below: 
20. First, launch the Settings application and go to the section of Accounts.
21. Once you do that, reach the left-hand side menu and select the ‘Family & other people’
    option.
22. After that, select the ‘Add someone else to this PC’ potion.
23. You should pick the ‘I don’t have this person’s sign-in information’ option.
24. You will be asked to input the Microsoft details.
25. Pick the ‘Add a user without a Microsoft account’ option.
26. Finally, input the preferred username, then hit on the Next button.

Source :- https://mymcafee.co.uk/windows-10-cannot-sign-into-microsoft-account/