Resolve QuickBooks Online Bank Error 155 fast. Call +1-866-513-4656 for step-by-step error 155 fix instructions.

When users encounter QuickBooks Online Bank Error 155, it often disrupts critical financial workflows like bank feeds, transaction imports, and account updates. This error typically appears while connecting your bank or credit card to QuickBooks Online (QBO), preventing automatic downloads of recent transactions.

QuickBooks Online Bank Error 155 Solution Guide. Fix Error 155 now – call experts at +1-866-513-4656 for instant help.

Many businesses face this issue when performing daily reconciliations or importing statements. If Error 155 is interrupting your workflow, follow this detailed guide to understand its causes, fixes, and prevention methods. For immediate assistance, you can also reach our QuickBooks-trained specialists at +1-866-513-4656.

What Is QuickBooks Online Bank Error 155?

QuickBooks Bank Error 155 usually occurs when there’s a communication failure between your financial institution and QuickBooks Online. It stops new transactions from syncing and may display messages indicating that QuickBooks cannot connect to your bank’s server.

This error can affect both QuickBooks Online and QuickBooks Desktop versions, especially when your bank requires updated credentials, or when QuickBooks is unable to authenticate login access.

Causes of QuickBooks Online Bank Error 155

Several factors can trigger this issue. Below are the most common causes you should identify before attempting to fix it:

1. Bank Server Timeout or Maintenance
2. Banks often perform scheduled maintenance or updates that prevent QuickBooks from establishing secure connections. This leads to temporary connection failures.
3. Incorrect Bank Login Credentials
4. Entering outdated or wrong usernames and passwords during bank setup in QuickBooks Online can trigger Error 155.
5. Expired or Revoked OAuth Token
6. If your bank connection token has expired, QuickBooks loses authorization to access your financial data automatically.
7. Firewall or Security Restrictions
8. Overly restrictive antivirus or firewall settings may block the secure data exchange between QuickBooks and banking servers.
9. Corrupted QBO Cache or Browser Session
10. Old cookies or cached browsing data can prevent QuickBooks Online from successfully contacting your financial institution.

How to Fix QuickBooks Online Bank Error 155

Follow these detailed steps depending on whether you use QuickBooks Online or Desktop:

Step 1: Refresh Your Bank Connection in QuickBooks Online

1. Sign in to QuickBooks Online.
2. Select Banking or Transactions from the left pane.
3. Choose your affected bank account.
4. Click the Update button on the top-right to refresh the bank connection.
5. Wait for the update to complete and verify if new transactions download.

Step 2: Re-enter Bank Login Details

1. In QuickBooks Online, go to Banking > Link account.
2. Select your financial institution and reauthorize your account using your current login credentials.
3. After successful authentication, check for Error 155 messages.

Step 3: Clear Cache and Cookies (Browser-Level Reset)

1. Log out of QuickBooks Online.
2. Clear cached browsing data and cookies.
3. Reopen your browser in incognito or private mode.
4. Re-login and attempt the connection again.

Step 4: Temporarily Disable Security Software

If your antivirus or firewall is restricting bank synchronization, disable it temporarily and retry the bank update. Once the issue resolves, create an exception for QuickBooks servers to prevent future disruptions.

Step 5: Manually Upload Transactions (If Error Persists)

When automatic sync fails, you can manually import recent transactions.

For QuickBooks Online:

1. Log in to your bank’s website and download bank data in CSV, QBO, or OFX format.
2. In QuickBooks Online, go to Banking > Upload from file.
3. Select your downloaded file and map it correctly using the QBO import bank transactions template.
4. Review and confirm imported transactions under Banking > For Review.

For QuickBooks Desktop:

1. Open Banking > Bank Feeds > Bank Feeds Center.
2. Choose Import Web Connect (.QBO) File.
3. Match the account and click Import to add transactions.

This method helps keep accounts up to date while you fix underlying connection errors.

Prevention Tips

To reduce the likelihood of encountering Bank Error 155 in the future, consider these best practices:

Regularly update QuickBooks Online or Desktop to the latest release.

Always use correct and current bank login credentials.

Reconnect your bank every 90 days to ensure a valid authentication token.

Whitelist QuickBooks servers in antivirus and firewall settings.

Clear browser cache periodically for optimal connection stability.

Frequently Asked Questions 

1. What does QuickBooks Online Bank Error 155 mean?

It means QuickBooks cannot connect to your bank due to server, login, or authorization problems.

2. How long does Error 155 last?

Usually, it’s temporary and resolves after your bank’s online services are restored or reauthorized in QuickBooks.

3. Can I still add transactions manually during Error 155?

Yes. You can manually upload transactions using CSV or QBO files from your bank’s website.

4. Does this error affect QuickBooks Desktop users too?

Yes, similar issues can appear in Desktop when connecting through Direct Connect or Web Connect.

5. Is there a permanent fix for Error 155?

Keeping QuickBooks and your bank accounts regularly updated and reconnected helps prevent recurrence.

Final Thoughts

Error 155 can interrupt your cash flow management, but understanding its triggers and step-by-step solutions ensures a quick resolution. By keeping your credentials and connections updated, you can avoid this recurring issue and maintain smooth bank syncs.

If you still encounter QuickBooks Online Bank Error 155 despite following the above methods, reach our experienced QuickBooks specialists at +1-866-513-4656 for expert-led troubleshooting to get your banking workflows back on track.