Recent updates to the QuickBooks integration with different banks have improved the service's dependability and efficiency. The new connection mechanism QB is using to connect with the major banks has already been accepted by Chase, Bank of America, Wells Fargo, and Citibank.

After this latest update, you may have QuickBooks error 377 in your QB online program if you haven't reconnected your QB account. The update now button on the notice banner must be clicked to create a new account with your bank. 

Key Factors Leading to the QuickBooks Error 377

Below are the connection update error 377 in the QuickBooks Desktop that occur due to the following reasons:

• Due to the outdated or corrupted QB app
• The third-party app integrated with QB can hinder the bank connection process
• The QBO's bank services may be down due to technical fixes, preventing the application from connecting
• The Windows firewall or security software is blocked

Note:- QuickBooks update stuck occurs when software fails to download or install updates due to slow internet, firewall restrictions, or corrupted program files. 

Ways to Resolve the Banking Error 377 In QuickBooks Online

There are two ways to resolve QuickBooks error 377 and download transactions within the application.

Go through the detailed steps discussed below: 

Step 1: In QBO, update the bank connection 

• Lunch the QBO > move to Banking menu
• Pick the Banking option from the list menu
• Navigate to Let's fix this bank connection banner > click on the Update Now option
• Then, go through the on-screen guidelines and complete the procedures

Step 2: Download Transactions and utilize WebConnect

• Make use of the supported browser, like Google Chrome, Internet Explorer > and log in to your QBO bank account
• Move to the Date Range segment > arrange it as you want
• Then download the transactions.QBO format
• In a different window, you need to log in to your QBO
• Hit on the Banking tab > select it
• Tap on the Upload Transactions manually if you are not joining an account for the first time
• Now, click on the Browse button > go to the file you downloaded under your banking website >and choose it
• Hit the Next button > click on the QuickBooks Account option
• Pick the account on which you want to upload the data, or you can also add a new account by clicking on Add New
• Then you need to click on the Gear icon and choose Import Data present from the Tools tab
• Hit on Bank Data and then tap Next
• At the end, you need to click on Let's go and complete the procedure

Step 3: Connect again with your bank account

• First, you need to unlock the QuickBooks app
• Start noticing the Banking menu
• Choose the Bank Feeds
• Then, tap on the Set Up Bank Feed option
• Now, move your cursor over the account, which gives you the error
• click Deactivate
• Then, confirm that you wish to deactivate the account's online services
• After the deactivation process is completed, you need to re-enable online services by setting up the bank feed again
• Go through the on-screen guidelines to reconnect your bank account

Also read:- QuickBooks Condense Data Utility helps reduce company file size by removing old transactions, optimizing performance, and improving multi-user access efficiency. 

Conclusion 

If neither of the solutions has helped you to troubleshoot the QuickBooks error 377, or you need any sort of help, dial +1(855)-738–0359 to connect with our experts who will directly connect you to our QB tech specialists who are available 24/7 to resolve all your queries.  

​QuickBooks Error 377 FAQ​

What is QuickBooks Error 377?

• QuickBooks Error 377 occurs when the software fails to validate the company file or encounters a problem during data synchronization. This error can prevent opening the file or completing certain accounting operations.

Why does QuickBooks Error 377 appear?

• This error usually appears due to damaged company files, network issues, outdated QuickBooks versions, or conflicts with multi-user access. Any interruption in file validation or server communication can trigger Error 377.

Can company file corruption trigger QuickBooks Error 377?

• Yes, if critical components of the company file are damaged or missing, QuickBooks cannot process the file correctly, leading to Error 377. Restoring a backup or repairing the file often resolves the issue.

Does multi-user mode cause Error 377?

• Improperly configured multi-user environments or simultaneous access from multiple workstations can lead to QuickBooks Error 377. Ensuring correct hosting settings and network permissions helps prevent this error.

Can antivirus or firewall settings lead to Error 377?

• Yes, aggressive firewall or antivirus programs may block QuickBooks from accessing files or communicating with servers, causing QuickBooks Error 377 during file opening or update processes.

Will updating QuickBooks fix Error 377?

• Updating QuickBooks to the latest version ensures compatibility with network protocols and file formats, which can often resolve Error 377 caused by outdated software components.

Does network instability contribute to QuickBooks Error 377?

• Yes, unstable or interrupted network connections can prevent QuickBooks from accessing shared company files or server resources, resulting in Error 377 during file operations.

Can permissions or user account control trigger Error 377?

• Insufficient folder permissions or restricted user accounts can block QuickBooks from accessing or modifying the company file, leading to Error 377. Running QuickBooks as administrator often resolves this.

How can QuickBooks File Doctor help with Error 377?

• QuickBooks File Doctor can scan the company file and network setup to detect and fix issues causing Error 377, including minor file corruption and access conflicts.

Are ND and TLG files related to QuickBooks Error 377?

• Yes, corrupted network descriptor (ND) files or transaction log (TLG) files can interfere with multi-user access, triggering Error 377. Renaming or recreating these files can fix the issue.

How do I verify company file integrity for Error 377?

• Checking the file size, using QuickBooks verify and rebuild tools, and ensuring proper backups can help confirm company file integrity and prevent recurring Error 377.

When should professional support be considered for QuickBooks Error 377?

• If file repair, hosting adjustments, network checks, and updates do not resolve the error, professional assistance is recommended to secure data and restore seamless QuickBooks operations.

Helpful Resource:- QuickBooks Error 40001 occurs when payroll updates fail due to server connection issues, corrupted files, or blocked internet access in QuickBooks.