How do I fix this error: "There's a problem with this account connection. We’re having trouble getting your bank data. Please try again later. (355)?

I appreciate you for trying the Update button and other things to fix the error you've got, affinity.

Can you share your bank's name. This way, I can further check my resources and provide accurate information about it.

For now, I recommend you manually upload your bank data. Log in to your bank website and get your transactions using a CSV file. Once done, you can follow the steps below to bring them into QuickBooks.

1. Go to the Transactions menu.
2. Within the Banking tab, click Upload transactions.
3. Select Drag and drop or select files and select the file you downloaded from your bank. Then select Continue.
4. In the QuickBooks account ▼  dropdown, select the account you want to upload the transactions into. Then select Continue.

For the information and steps on importing bank data, we can visit this article: Manually upload transactions into QuickBooks Online.

You can check these articles for guides when reviewing and reconciling your accounts. The articles below will serve as your guide:

• Categorize and match online bank transactions in QuickBooks Online.
• Learn the reconcile workflow in QuickBooks

If you have more concerns about connecting accounts and handling transactions, please know that I'm here to help you. 

Thank you for your comment. To answer your question, the bank is Wells Fargo. In regards to the proposed interim work around, unfortunately it isn't feasible to manually download transactions as I don't know which have and haven't been already downloaded into quickbooks. It is not easy to check as it is a business checking account with thousands of transactions a week. I need the problem fixed, not workarounds. 

Bank is Wells Fargo. I can't manually download transactions as I don't know which have and haven't downloaded already and checking isn't feasible as there are thousands of transactions a week on this business account. I do not want work arounds. I need the problem fixed and the service I'm paying for to work.

I heard your sentiment, @usercamson. I'm here to help you resolve this issue while connecting your bank in QuickBooks Online. I'll provide the steps for contacting our support team in QuickBooks Online.

Thank you for providing the details regarding your bank. This information will assist in identifying the issue and exploring potential solutions. I recommend reaching out to our support team, as they can review your account in a secure environment and investigate 355 errors related to your bank.

Please see the steps below:

1. Log in to your account.
2. Click the? Help button at the top right corner.
3. Go to the Search tab, then select Contact Us.
4. Enter a brief discussion with your concern, then click Continue.
5. Choose to Get a callback to connect to us.

The Community is here for you 24/7 on the clock. If you need to drop your additional comments, notify us below. Keep safe.

@usercamson-crown-cap 

I do not want work arounds. I need the problem fixed and the service I'm paying for to work.

Last resort, explore MT Online as a workaround.

https://www.moneythumb.com/?ref=110

This NEEDS TO BE FIXED.  It has been happening for some time now and QBO needs to address it!

We know the importance of fixing this concern, @Plus 2. We're hearing your sentiment. Let us give you the support that can guide you further regarding the 355 error you're experiencing. 

While we understand your urgency in resolving the issue, note that we can't provide a solution in this public forum as we can't access your account information. However, we highly recommend reaching out to our support team. The team has the necessary expertise and tools to assist you effectively. Let me show you how to contact our support team:

1. In your QuickBooks, select Help (?).
2. Choose either tab to get started:

• Assistant: Get quick and personalized answers. 
• Search: Search the QuickBooks Online knowledge base directly, or 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.

On the other hand, you can view this link once you download your transactions from your bank accounts inside QBO: Download the most recent bank and credit card transactions in QuickBooks Online. 

For further questions about connecting your bank in QBO, leave a reply below. We'll be here to assist you. Take care.