How to Fix QuickBooks Online Error Code 404: Page Not Found?

QuickBooks Error Code 404 occurs when the software cannot connect to the Intuit server or access a required webpage. This can happen during updates, online banking, or payroll processing. The error often appears due to an unstable internet connection, incorrect system settings, or damaged QuickBooks files. Common messages include “QuickBooks Error 404: Page Not Found” or “Service Unavailable.” Signs include software crashes, update failures, or interrupted online transactions.

To fix this error, check your internet connection, update QuickBooks, and adjust internet settings. Try running QuickBooks in Selective Startup mode, clearing junk files, and checking firewall settings. Ensure admin access, back up your company file, and close unnecessary programs. To avoid the error, maintain a stable connection, keep QuickBooks updated, and ensure proper security access. Regular system maintenance can help avoid errors like 404.

Method 1: Check Network Connection

Ensure your network connection is active and stable to avoid errors like 404. Follow these steps to troubleshoot connection issues:

1. Open browser and check if websites load.
2. Refresh internet settings if websites don’t load.
3. Use QuickBooks Network Utility to diagnose issues.
4. Restart router if “no internet connection” appears.
5. Restart computer and retry.

Method 2: Update and Repair QB Desktop

Updating and repairing QuickBooks Desktop can fix common issues and improve performance. Follow these steps:

1. Open QuickBooks > Help menu > Update QuickBooks Desktop.
2. Update to the latest version.
3. Open the company file.
4. Press Windows+R, type “Appwiz.CPL,” and hit Enter.
5. Select QuickBooks from the list, click “Repair.”

Method 3: Change Internet Settings

Changing your browser’s internet settings can help resolve connection-related errors. Follow these steps:

1. Open Internet Explorer > Tools > Internet Options.
2. Go to the Security tab > Trusted Sites.
3. Add QuickBooks and Intuit official websites as trusted sites.
4. Click OK and close the tab.
5. Log out of the company file and close QuickBooks.
6. Reopen QuickBooks and the company file to check if the error persists.

Method 4: Using Selective Startup

Using a selective startup can help optimize system performance and resolve errors. Follow these steps:

1. Sign out of company files and close QuickBooks.
2. Update Windows and restart the system.
3. Open Internet Explorer > Tools > Internet Options > Advanced.
4. Enable TLS 1.0 and TLS 2.0.
5. Close background programs and open the Run dialog box.
6. Type “MSConfig” and press OK.
7. In the System Configuration window, click General.
8. Select “Selective Startup” in the Startup menu.

Method 5: Reconfigure System Settings

Reconfiguring system settings can help resolve errors and optimize QuickBooks performance. Follow these steps:

1. Open QuickBooks.
2. Access and log out of the company file.
3. Update Windows and restart the system.
4. Open Internet Explorer > Tools > Internet Options.
5. Go to the Advanced tab and adjust settings.
6. Close all programs and save changes.
7. Press Windows + R, type msconfig, and click OK.
8. In the System Configuration window, go to the General tab.
9. Select “Selective Startup” under Startup Selection.
10. Click OK and restart the system.

Method 6: Remove System Junk and Temporary Files

Clearing junk files can help improve system performance and resolve errors. Follow these steps:

1. Open browser and delete cache and cookies.
2. Go to Settings > Clear browsing data.
3. Press Windows + R, type %temp%, and press Enter.
4. Delete all temp files (skip ones that can’t be deleted).
5. Restart your computer and check for the error.

Method 7: Check Internet Speed

A slow or unstable internet connection can cause errors. Follow these steps to troubleshoot:

1. Open Internet Explorer and visit a few websites.
2. Refresh the internet settings and try again.
3. Restart your router if the page doesn’t load.
4. Restart your computer and test the connection.
5. Make sure Internet Explorer is the default browser.

Contact your internet provider if the issue continues.

Method 8: Scan for Viruses

Scanning for viruses can help resolve issues caused by malware. Follow these steps:

1. Run a full system antivirus scan.
2. Delete any infected files found.
3. Proceed with other solutions if issues remain.

Method 9: Clear Junk Files and Use Private Mode

Clearing junk files and using private mode can help resolve browser-related issues. Follow these steps:

1. Open your browser > go to Settings.
2. Search for Cache and Cookies > delete all.
3. Close the browser.
4. Right-click the browser icon > choose Private/Incognito Mode.
5. Access QuickBooks Online and check for the error.

Method 10: Scan Windows for Infections

Scanning for infections can resolve issues caused by malware. Follow these steps:

1. Open your antivirus software.
2. Run a full system scan.
3. Download and install an antivirus if none is present.
4. Remove any threats found.

Method 11: Repair or Reinstall QuickBooks Desktop

Repairing or reinstalling QuickBooks can fix application-related issues. Follow these steps:

1. Repair QuickBooks using the built-in repair tool.
2. Uninstall QuickBooks if the error persists.
3. Use the Clean Install Tool to reinstall the app.

What are the Prerequisites to Fix QuickBooks Online Error Code 404?

1. Ensure a stable internet connection
2. Log in as an administrator
3. Update QuickBooks to the latest version
4. Back up the company file
5. Disable antivirus/firewall temporarily
6. Close unnecessary apps
7. Check system date and time

How to Identify QuickBooks Online Error Code 404?

1. QuickBooks shows “Error 404: Page Not Found”
2. Software crashes during updates or tasks
3. Online features fail to load
4. Pages don’t open or respond
5. System becomes slow or unresponsive
6. Internet works, but QuickBooks can’t connect to the server

How to Prevent QuickBooks Error Code 404?

• Keep QuickBooks updated
• Ensure a stable internet connection
• Clear browser cache and system junk regularly
• Allow QuickBooks through firewall and antivirus
• Avoid interrupting updates or online tasks
• Perform regular system maintenance
• Check system date, time, and region settings

When Should You Seek Professional Help for QuickBooks Online Error Code 404?

QuickBooks Error Code 404 should be handled by a professional when basic fixes like checking the internet connection, updating the software, or adjusting settings don’t work. The error can disrupt important tasks such as payroll, banking, or system updates and may even lead to data loss or instability. We can help if you’re uncomfortable changing system settings or if the issue keeps returning. A technician can find and fix the deeper problem while keeping your data safe.