QuickBooks Error 377: What It Means & How to Fix It

Quick Fix: This error means QuickBooks can't connect to your bank right now — usually because the bank's servers are temporarily unavailable. Wait a few hours and try again.

What Causes Error 377?

1. Your bank is undergoing maintenance — Banks regularly take their systems offline for maintenance, usually during nights and weekends. During these windows, QBO can't pull transactions.
2. Intuit's connection to your bank is temporarily broken — The service Intuit uses to communicate with banks can experience intermittent issues, especially with smaller banks and credit unions.
3. Your bank has changed their data sharing protocols — If the bank updated their API or security requirements, the existing connection may no longer work until Intuit updates their side.

How to Fix QuickBooks Error 377

Method 1: Wait and Try Again

1. Wait 2-4 hours (or overnight if it's late in the day)
2. Go to Banking → Update in QBO
3. Error 377 is almost always temporary — patience is genuinely the best fix

Method 2: Verify Your Bank Is Working

1. Log into your bank's website directly
2. Make sure your accounts are accessible and transactions are showing
3. If the bank's website is down or slow, wait until it's back to normal
4. Then retry the QBO update

Method 3: Update Your Connection

1. In QBO: Banking → pencil icon → Edit sign-in info
2. Re-enter your bank credentials
3. This refreshes the connection session and can resolve stale connection issues

Method 4: Disconnect and Reconnect

If the error persists after 24 hours:

1. Disconnect the bank account in QBO
2. Wait 15-30 minutes
3. Reconnect with fresh credentials
4. Map the account back to the correct QBO account

Method 5: Upload Transactions Manually

While you wait for the connection to come back:

1. Log into your bank and download transactions as a .CSV, .QFX, or .QBO file
2. In QBO: Banking → Upload transactions
3. Select the file and map it to the right account
4. This keeps your books current while the live feed is down

Still Getting Error 377?

• Check status.quickbooks.intuit.com for known bank issues
• Contact Intuit Support if the error persists for more than 48 hours
• Contact your bank to confirm they support third-party data access (some banks disable it by default)

Prevent This Error in the Future

• Don't panic when bank feeds go down — it's almost always temporary
• Keep a manual upload workflow handy for when feeds break during critical times (month-end, tax prep)
• Monitor the Intuit status page — bookmark it for quick checks
• Log into your bank directly once a week to catch issues early

Related Errors

• Error 324 — Bank connection timeout
• Error 9999 — General bank connection failure
• Bank Connection Error — General troubleshooting guide

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