| Symptom | Likely cause | First safe fix |
|---|---|---|
| Code expired | Too much time passed or multiple codes requested | Request once and use the newest code promptly |
| Code rejected | Old code, typo, or wrong login session | Start a fresh official login session |
| Repeated MFA prompts | Cookies disabled or device not remembered | Allow cookies for official site and avoid private mode for remembered devices |
Why codes expire
Access codes are time-sensitive. If several codes were requested, older messages may arrive after newer ones and fail.
- Use only the newest code.
- Do not request many codes in a row.
- Start over if unsure which code is current.
Repeated verification prompts
If cookies are blocked or cleared, the site may not remember a trusted device. Private browsing can also force new verification each time.
- Allow necessary cookies.
- Avoid clearing site data after every successful login.
- Use a trusted device, not public computers.
Suspicious MFA prompts
Receiving codes you did not request may be a sign that someone knows or is guessing your username/password.
- Do not share the code.
- Change passwords through official channels.
- Notify your administrator or bank support.
Use official Synovus help for account-specific issues
For login access, account-specific changes, locked users, payment services, fraud concerns, or confidential banking questions, use official Synovus channels. Start at the official Synovus website, review the official Synovus Gateway information page, or use the official Synovus contact page.
Do not share codes or passwords
No help guide, phone caller, email sender, text message, or “support agent” should ask you to share your banking password, one-time access code, full account number, card number, or remote computer access. Stop and verify through official channels.
FAQ
Why does the code say invalid?
It may be old, mistyped, from another session, or superseded by a newer code.
Why am I asked for MFA every time?
Cookies, browser privacy settings, private mode, or device recognition settings may prevent the device from being remembered.
Can someone log in if I share the code?
Yes, sharing a code can let a scammer complete login. Keep it private.
Last reviewed: May 15, 2026. This page is written as independent troubleshooting guidance and is not a substitute for official Synovus support.