A Detailed Guide to Help You Overcome QuickBooks Error 377

Last Updated on January 5, 2026

Connecting your QuickBooks company file and your financial institution is a crucial feature. It allows users to download transactions directly through the QB app. At times, users may not be able to use this feature due to QuickBooks error 377. The error occurs only in the online version of QuickBooks. The users need to update the connection between QuickBooks and the bank. The error message that may float on your screen is as follows:

We have covered all the essential aspects you need to know about this error in this blog.

If you need assistance with your company file, you can contact our experts at +1(855)-510-6487 for a free consultation.

Things You Might Experience When QuickBooks Error 377 Arises

The following are the situations you might notice when you are facing error 377:

• The connection fails when you try to update or connect your bank account in QuickBooks.
• A pop-up message may arise on the screen.
• The bank transactions will not be updated in QuickBooks even after they are completed on the bank server.
• Sometimes, QuickBooks might also deactivate your bank account.
• When you are unable to access the online banking features.
• Even after logging in to your bank account, QuickBooks may repeatedly ask you to log in again.
• You will notice that you are unable to use the online banking features in QB.
• When trying to connect to your bank servers in QuickBooks, you might encounter a connection timeout.

In the next section of the blog, we will help you understand what may be causing the error.

Potential Causes Due to Which QuickBooks Error 377 May Arise

There can be several reasons why the error may occur in your system. Let’s have a look at them below.

• If the bank has updated its website, that could be the case because QuickBooks is unable to establish a connection.
• If you have recently updated your banking credentials and they have not been updated in QuickBooks, it can lead to error 377.
• QuickBooks may not support two-factor authentication, which can cause errors with the bank’s server.
• When your bank account is temporarily blocked, suspended, or facing issues.
• Your firewall can block the QuickBooks operations.
• When your QB software is outdated.
• If your browser is facing issues or contains cache and cookies that cause this error.

Now that you understand the reasons behind the error, let’s learn the troubleshooting steps you can try to fix it.

Effective Methods You Can Use to Resolve QuickBooks Error 377

There are two ways for users to resolve QuickBooks error 377 and download transactions within QB itself. You can either update the bank connection in QuickBooks Online or use Web Connect to download the bank transactions. The detailed steps you need to follow are:

Solution 1: Update Bank Connection in QuickBooks Online

Updating your bank connection in QuickBooks Online will fix Banking error 377. These are the steps you need to follow:-

• Run QuickBooks Online.
• Go to the Banking menu.
• Then choose the Banking option from the list.
• Tap the Update Now button next to the Add account area.
• Now, follow the on-screen instructions to complete the update process.

You can also try to use WebConnect and download the transactions to overcome the error by following the next method.

Solution 2: Use WebConnect And Download Transactions

This solution can help you bypass QuickBooks error code 377. You can download the transactions from your bank’s website and import them into QuickBooks. These are the steps you need to follow:

• Use a supported browser such as Google Chrome, Internet Explorer, or Mozilla and log in to your Online Bank account.
• Go to the Date Range section and set it as needed.
• Download the transactions in .QBO format.
• Now, log in to your QuickBooks Online account in a different tab.
• Click on the Banking tab on the left.
• Then, select the Banking section.
• Go to the Update menu.
• Then tap File Upload.
• Click on Upload Transactions Manually if you are connecting an account for the first time.
• Tap on the Browse button.
• Navigate to the file you downloaded from your banking website and select it.
• Then click on the Next button.
• Tap on QuickBooks Account.
• Choose the account on which you want to upload the data. You can also add a new account by tapping on Add New.
• You need to click on the Gear icon and select Import Data present under the Tools tab.
• Click on Bank Data.
• Then, press Next.
• Finally, tap on Let’s go and finish the process.

Now that you have downloaded transactions, try to check if the error still occurs.

Solution 3: Update the Online Bank Connection

You can also update your online bank connection to fix the error 377 in your system.

• Access Bookkeeping.
• Choose the Transactions option.
• Click on the Bank Transactions section.
• Tap on the Update Now button.

If updating the online bank connection doesn’t resolve the problem, try reconnecting your bank account.

Solution 4: Reconnect Your Bank Account

Reconnecting to the bank account can help you fix the QuickBooks error 377. To do so follow the steps below:

• Access the QuickBooks.
• Go to the Banking menu.
• Choose the Bank Feed option.
• Click on the account name that is the cause of the error.
• Then, tap on Deactivate.
• Now, confirm that you want to deactivate your online services for the account.
• Now, re-enable the online services by setting the bank feed again.
• Go through the on-screen instructions to reconnect to the bank account.

There can be times when you can reconnect your bank account and tackle the QuickBooks error 377 easily. If this solution didn’t help, try clearing your browser’s cache.

Note: Banking connection issues can disrupt financial tasks; discover causes, symptoms, and solutions for QuickBooks Error 350 to fix online banking errors, restore account access, and ensure accurate, uninterrupted accounting operations.

Solution 5: Clear Cache and Cookies

One reason for the error may be the cache and cookies in your web browser. Follow the steps below to clear it.

For Chrome:

• Go to the Chrome browser.
• Tap on the three dots in the top-right corner.
• Click on the Delete browsing data option.
• Choose the time range from which you wish to delete the data.
• Click on the Delete Data option.

For Firefox:

• Move to Mozilla Firefox.
• Click on the Menu option from the top-right corner.
• Then, head to the Settings tab.
• Choose the Privacy & Security option.
• Head to the Cookies and Site Data section.
• Click on the Clear Data option.

For Microsoft Edge:

• Access Edge on your system.
• Click on the Settings menu.
• Go to the More section.
• Select the Settings option.
• Click on Privacy, Search, and Services options.
• Head to the Delete Browsing Data.
• Choose the Clear Browsing Data Now option.

For Safari:

• Access the Safari browser.
• From the top-right corner, go to the Menu option.
• Choose Settings or Preferences.
• Then, tap on the Privacy option.
• Tap on the Manage Website Data section.
• Tap on Remove All.
• Click on Done.

With the help of the steps mentioned above, you can clear the unnecessary cookies and cache in your system’s browser.

A Quickview Table for QuickBooks Error 377

In this section, let’s have a summary of what we have talked about in this blog.

Conclusion

The QuickBooks error 377 is a banking error that occurs when you try to link your bank account to the QB application. We have discussed this error in detail on this blog. We added sections that explain the issue’s causes and the troubleshooting steps to help you resolve it. If you need any more help when connecting your bank accounts to your QuickBooks, feel free to get in touch with our experts.

Frequently Asked Questions (FAQs)

Alastor Moody

Alastor Moody is an Author at Asquare Cloud Hosting with experience in technical and functional writing. He loves travelling for adventure and fun.