SAM.gov Login Problems: Common Fixes

SAM.gov is the federal government’s registration system for companies that want to do business with the United States government, and it now uses Login.gov for sign-in. That extra layer improves security, but it also creates new ways to get locked out. A mistyped password, a lost phone, a changed email address, or an expired code can all stop you at the front door.

This guide explains the most common SAM.gov login problems and gives clear, practical fixes for each one, so you can get back into your registration without losing time or risking a lapse in your active status.

First, Identify Where the Login Is Failing

Before you reset anything, work out which step is failing. SAM.gov sign-in usually follows the same path: you enter your Login.gov email and password, then you complete two-factor authentication, then SAM.gov loads your account and any entities linked to it. The fix depends on where the process stops.

If SAM.gov will not load at all, the problem may be your browser or connection, not your account. If Login.gov rejects your password, the fix is different from a missing authentication code. And if you sign in successfully but cannot see your entity, the issue is usually about which Login.gov account is linked to the Entity Administrator role.

Login.gov Sign-In Errors

The most common sign-in error is a wrong email or password. SAM.gov accounts are tied to a specific Login.gov account, so make sure you are using the email address you originally used to create that account, not a work or personal address you use elsewhere.

Check that Caps Lock is off, that your browser is not autofilling an old password, and that you have not accidentally added a space at the end of the email address. If you have tried several times, wait a few minutes before trying again, because repeated failed attempts can trigger a temporary lockout.

If you are sure of your email but not your password, use the Login.gov password reset link rather than guessing again. Choose a new password that meets the requirements, save it in a password manager, and sign in once to confirm it works before you close the page.

Multi-Factor Authentication Codes That Do Not Work

Login.gov requires two-factor authentication, and a code that does not work is one of the most frustrating SAM.gov login problems. First, check the clock on your phone or device. Authentication codes are time-sensitive, so a device clock that is even a minute out can make every code appear invalid. Turn on automatic date and time, then try a fresh code.

If you use an authenticator app, make sure you are reading the code for the correct Login.gov account, especially if you manage more than one account. Codes refresh every 30 seconds, so wait for a new code rather than retyping one that is about to expire.

If you receive codes by text message, check your signal, make sure the number on file is still yours, and look for the message in your spam or blocked folders. If you have changed your phone number, you will need to use another authentication method on your account, such as a backup code or a security key, to sign in and update your number.

Keep your backup codes in a safe place when you first set up Login.gov. They are the fastest way back in if you lose access to your phone or authenticator app, and you should treat them like a spare key.

Locked Accounts and Too Many Failed Attempts

After too many failed sign-in attempts, Login.gov may temporarily lock your account to protect it. This is a security measure, not a permanent ban, but it does mean you should stop trying to sign in for a while rather than continuing to guess.

Wait for the lockout period to pass, then sign in once with the correct credentials. If you still cannot sign in after waiting, use the password reset process and, if needed, the account recovery options offered by Login.gov. Do not create a second Login.gov account to work around a lockout, because SAM.gov entity access is tied to the original account, and a new account will not show your registration.

Password Resets That Do Not Seem to Work

If you request a password reset and no email arrives, check your spam and junk folders, and make sure you requested the reset for the exact email address linked to your Login.gov account. Add Login.gov to your safe senders list if its messages are being filtered.

Reset links expire, so use the most recent email you received and click the link promptly. If you request several resets in a row, only the latest link may work, so ignore the earlier messages.

When you set a new password, avoid reusing a password from another site. Login.gov may reject passwords that are too common or that have appeared in known data breaches, even if they meet the length requirement.

You Can Sign In but Cannot See Your Entity

A different and confusing problem is signing in successfully and finding no entity, or an entity with the wrong status. This usually means you signed in with a different Login.gov account from the one that holds the Entity Administrator role for that registration.

Ask a colleague who has access to confirm which email address is listed as the Entity Administrator, then sign in with that account. If the Entity Administrator has left the company, the organisation will need to follow SAM.gov’s process to transfer the role to an authorised person, which may require verification against official business records.

Also check whether you are looking at the right entity. Companies with similar names, subsidiaries, or old registrations can easily be confused, so confirm the Unique Entity Identifier, or UEI, before you make changes.

Browser, Cache, and Connection Problems

Sometimes the problem is not your account at all. If SAM.gov loads slowly, shows a blank page, or loops back to the sign-in screen, try clearing your browser cache and cookies for the site, then close and reopen the browser. Make sure your browser is up to date, disable extensions that block scripts or cookies for a test, and try a different browser if the problem continues.

Avoid using public Wi-Fi for SAM.gov account changes, and do not sign in from a shared computer unless you sign out fully afterwards. If your organisation uses a VPN or a strict firewall, try signing in without it, or ask your IT team whether SAM.gov and Login.gov are being blocked.

When to Contact SAM.gov Help

If you have worked through the steps above and still cannot sign in, contact the Federal Service Desk for SAM.gov support. Before you call or submit a ticket, gather your UEI, your legal business name, the email address on your Login.gov account, and a short description of the exact error message you see and the step where sign-in stops.

Do not share your password, authentication codes, or backup codes with anyone, including anyone claiming to be from support. Legitimate support staff will never ask for them.

Login Problem Checklist

Use this quick checklist before you escalate a login problem: confirm you are using the correct Login.gov email address; check Caps Lock and autofill; confirm your device clock is set automatically; use a fresh authentication code; wait out any temporary lockout; use the latest password reset link; check spam for Login.gov emails; and confirm you are signed in with the Entity Administrator account for the right UEI.

Conclusion

Most SAM.gov login problems come down to a small number of causes: the wrong Login.gov account, an expired or mistimed authentication code, a temporary lockout, or a browser issue. Work through them in order, keep your backup codes safe, and make sure at least one other authorised person in your company can access the Entity Administrator account. A few minutes of preparation now can save days of delay when a registration renewal or a bid deadline is approaching.