Try opening your QBO account on any private/incognito browser.

I'll make sure to assist you in getting your Online Banking feature up and running in QuickBooks.

Can you please provide us with additional information on which specific bank you are trying to sync in QuickBooks Online (QBO)?  Any further details would be much appreciated for narrowing down this issue.

These are the potential causes of why you're getting the error 176.

• Connection Failed

• Web Server Error

• Session Timed Out

• Session Failed

• SSL Error

• Processing error

• Encryption/Decryption error

• Invalid request

• Invalid Date Range

If your bank is connected to QuickBooks, this issue can be resolved by disconnecting and reconnecting your bank account.

Here's how disconnect:

1. Head over to the Banking or Transactions tab, then select Banking.
2. Choose the tile for the bank account.
3. Click on the pencil icon, then select Edit account info.
4. Tick the box beside Disconnect this account on save. If QuickBooks is downloading new transactions, you won't see this option. Wait a few minutes for the update to finish and try again.
5. Click Save and Close.

Once done, I suggest opening this link on how to reconnect your account to QBO.

You also have the option to use web-connect to import a bank data file directly to QuickBooks. Here’s an article on how to upload bank transactions. 

Moreover, you can check out the additional instructions from this article to isolate the issue: What to do if you get a bank error or can't download transactions in QuickBooks Online. 

Let me know if you have other questions about managing your banks in QuickBooks. You're always welcome to share them with me.

The bank we use is the same bank for the past 5 years.

Just in the past six months we keep getting this error code 176.  We have done nothing different.

Thank you, tried that.

I appreciate your efforts in addressing your bank error, Saralee22. I'm here to explain the error and guide you through the resolution process.

When encountering the bank error 176, it needs to be reported directly to our engineers so they can continue troubleshooting the issue. Also, error 176 means falls into the category of a general script error.

Here's how to report the issue:

1. On the Banking page, click Report Issue within the error message.
2. Enter your name and email address.
3. Select Submit.

Additionally, this can take up to 8-10 business days or up to 21 business days. Once resolved, you'll receive an email directly from them.

In the meantime, you can manually enter your transactions or import them from an Excel CSV file. This allows you to download your transactions.

Moreover, here are some articles about managing your bank transactions:

• Reconcile an account in QuickBooks Online
• Categorize online bank transactions in QuickBooks Online
• Match online bank transactions in QuickBooks Online

This thread is always open if you have additional questions or concerns about your bank. I'm ready to help you out.

I have done this.

Issue still persists and has not been resolved.

Hi there, @SaraLee22.

I understand the urgency of fixing this case. Rest assured, we're always here to help you get this done. As my colleague stated, after reporting the issue, it will take 8-10 business days and may even take up to 21 days. You'll get an email notification for an update once it's done.

 If you'd like to call an agent on the phone, I'm here redirect you to them. Here's how: 

1. Head to this link: Contact Us.
2. Select QuickBooks Online product and click Continue.
3. Select Contact Us and choose a way to connect with us:

• Start a chat with a support expert.
• Get a callback from the next available expert.

Moreover, you can check out this article if you encounter any other banking errors in QBO: What to do if you get a bank error or can't download transactions in QuickBooks Online. 

Please let me know if you have additional concerns about your banking issues. I'm always here to support your business needs.

Thank you, will do