🔐 𝗙𝗶𝘅𝗶𝗻𝗴 𝗟𝗼𝗴𝗶𝗻 𝗙𝗮𝗶𝗹𝘂𝗿𝗲 𝗶𝗻 𝗔𝗦𝗣.𝗡𝗘𝗧 𝗖𝗼𝗿𝗲 𝗜𝗱𝗲𝗻𝘁𝗶𝘁𝘆: 𝗔 𝗗𝗲𝗯𝘂𝗴𝗴𝗶𝗻𝗴 𝗚𝘂𝗶𝗱𝗲

I faced an issue where _𝘀𝗶𝗴𝗻𝗜𝗻𝗠𝗮𝗻𝗮𝗴𝗲𝗿.𝗣𝗮𝘀𝘀𝘄𝗼𝗿𝗱𝗦𝗶𝗴𝗻𝗜𝗻𝗔𝘀𝘆𝗻𝗰() 𝗸𝗲𝗽𝘁 𝗿𝗲𝘁𝘂𝗿𝗻𝗶𝗻𝗴 𝗳𝗮𝗹𝘀𝗲 despite correct credentials. After debugging, I found that the PasswordHash was null in the AspNetUsers table. Here’s how I resolved it:

🔎 𝗞𝗲𝘆 𝗜𝘀𝘀𝘂𝗲𝘀 𝗜𝗱𝗲𝗻𝘁𝗶𝗳𝗶𝗲𝗱:

1️⃣ 𝗨𝗻𝗻𝗲𝗰𝗲𝘀𝘀𝗮𝗿𝘆 𝗙𝗶𝗲𝗹𝗱𝘀: My ApplicationUser class contained a PasswordHash field, but it wasn't managed by UserManager.

2️⃣ 𝗨𝘀𝗲𝗿 𝗖𝗿𝗲𝗮𝘁𝗲𝗱 𝗪𝗶𝘁𝗵𝗼𝘂𝘁 𝗛𝗮𝘀𝗵𝗲𝗱 𝗣𝗮𝘀𝘀𝘄𝗼𝗿𝗱: The password was stored in plain text instead of being hashed by Identity.

3️⃣ 𝗠𝗮𝗻𝘂𝗮𝗹 𝗗𝗮𝘁𝗮 𝗗𝗲𝗹𝗲𝘁𝗶𝗼𝗻: Deleting users from AspNetUsers without cleaning related tables caused inconsistencies.

🚀 𝗦𝘁𝗲𝗽𝘀 𝘁𝗼 𝗙𝗶𝘅 𝗜𝘁:

4️⃣ 𝗗𝗲𝗹𝗲𝘁𝗲𝗱 𝘁𝗵𝗲 𝗨𝘀𝗲𝗿 𝗠𝗮𝗻𝘂𝗮𝗹𝗹𝘆:

DELETE FROM AspNetUserRoles WHERE UserId = 'user_id';
DELETE FROM AspNetUserLogins WHERE UserId = 'user_id';
DELETE FROM AspNetUserClaims WHERE UserId = 'user_id';
DELETE FROM AspNetUsers WHERE Id = 'user_id';

5️⃣ 𝗥𝗲𝗺𝗼𝘃𝗲𝗱 𝘁𝗵𝗲 𝗣𝗮𝘀𝘀𝘄𝗼𝗿𝗱𝗛𝗮𝘀𝗵 𝗣𝗿𝗼𝗽𝗲𝗿𝘁𝘆: Let Identity handle it instead.

6️⃣ 𝗥𝗲𝗰𝗿𝗲𝗮𝘁𝗲𝗱 𝘁𝗵𝗲 𝗨𝘀𝗲𝗿 𝗣𝗿𝗼𝗽𝗲𝗿𝗹𝘆:

var user = new ApplicationUser { UserName = "[email protected]", Email = "[email protected]" };
var result = await _userManager.CreateAsync(user, "SecurePassword123!");

7️⃣ 𝗩𝗲𝗿𝗶𝗳𝗶𝗲𝗱 𝘁𝗵𝗲 𝗣𝗮𝘀𝘀𝘄𝗼𝗿𝗱 𝗛𝗮𝘀𝗵: Ensured the password was stored correctly in `AspNetUsers`.  
8️⃣ 𝗖𝗵𝗲𝗰𝗸𝗲𝗱 𝗘𝗺𝗮𝗶𝗹 𝗖𝗼𝗻𝗳𝗶𝗿𝗺𝗮𝘁𝗶𝗼𝗻: If required, manually confirmed the email.  
9️⃣ 𝗥𝗲𝘁𝗿𝗶𝗲𝗱 𝗟𝗼𝗴𝗶𝗻: After fixing the issue, `_signInManager.PasswordSignInAsync()` returned `Succeeded`.  
🔟 𝗙𝗶𝗻𝗮𝗹 𝗧𝗲𝘀𝘁 𝗣𝗮𝘀𝘀𝗲𝗱! The login issue was resolved successfully.  

💡 𝗛𝗮𝘃𝗲 𝘆𝗼𝘂 𝗲𝘃𝗲𝗿 𝗳𝗮𝗰𝗲𝗱 𝗮𝘂𝘁𝗵𝗲𝗻𝘁𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝗳𝗮𝗶𝗹𝘂𝗿𝗲𝘀 𝗶𝗻 𝗔𝗦𝗣.𝗡𝗘𝗧 𝗖𝗼𝗿𝗲 𝗜𝗱𝗲𝗻𝘁𝗶𝘁𝘆? 𝗛𝗼𝘄 𝗱𝗶𝗱 𝘆𝗼𝘂 𝗱𝗲𝗯𝘂𝗴 𝗶𝘁? Let’s discuss! 👇