401
Universal HTTP Status Code
Severity: ModerateWhat Does This Error Mean?
A 401 Unauthorized error means you are trying to access a page that requires you to be logged in — and you are not. The server knows who could access this page, but it cannot confirm it is you yet. This is not a permanent block. It is simply the website asking: 'Who are you? Please log in first.'
Affected Models
- All web browsers
- All websites with login systems
- Mobile apps
- API services
Common Causes
- You are not logged into the website and the page requires a login
- Your login session expired and you have been automatically signed out
- You entered the wrong username or password
- Your account has been suspended or deactivated
- A saved login cookie has expired or become corrupted
How to Fix It
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Try logging in to the website. Look for a 'Sign In' or 'Log In' button on the site's homepage.
Most 401 errors simply mean you need to log in before viewing that page.
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If you are already logged in, log out and then log back in. Your session may have expired.
Sessions typically expire after a period of inactivity — this is normal and a security feature.
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Double-check your username and password. Make sure Caps Lock is not on. Try the 'Forgot Password' link if needed.
Even a single wrong character will prevent login.
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Clear your browser cookies for the site. Go to Settings > Privacy > Clear browsing data and clear cookies.
An old, corrupted cookie can sometimes prevent successful login.
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If you have been locked out after too many attempts, wait 15–30 minutes before trying again, or use the account recovery option.
Many sites temporarily lock accounts after several failed login attempts for security.
When to Call a Professional
If you believe your account is in good standing but cannot log in, contact the website's customer support. If you manage a website and users are getting 401 errors unexpectedly, a web developer should check the server's authentication configuration.
Frequently Asked Questions
What is the difference between a 401 and a 403 error?
A 401 means the website does not know who you are yet — you just need to log in. A 403 means the website knows who you are, but you do not have permission to see that page. Think of 401 as 'Please show your ID' and 403 as 'I know who you are, but you are not allowed in.'
My login details are correct but I still get a 401 — what now?
Your account may be suspended or your subscription may have lapsed. Contact the website's support team directly. Also try a different browser or device to rule out a local issue.
Is a 401 error dangerous?
No — it just means access was not granted. It is a normal security mechanism. No data was lost or compromised.