How Can I Resolve QuickBooks Error code 404?
                     Fix QuickBooks Error 404 
Message File not Found Issue
QuickBooks Error Code 404 may be a run-time error and caused because of many variables. 
It's more important to urge troubleshoot it as on possible causes to stay it from recurring this 
error.
Error Status Message: 'Error 404' QuickBooks has encountered an issue and requires 
shutting. We are sorry for the inconvenience. The image as shown below is analogous which 
appears on your desktop.
What is QuickBooks error code 404?
QuickBooks Error Code 404 could be a common issue that ends up in a lot of problems. In 
most cases, there are many reasons behind it and one must try and understand them. This 
issue may be solved by the steps discussed in this article.
Generally in QuickBooks, the Error Code 404 occurs when the software isn't installed 
correctly or something gets infected, deleted to damaged files in your QuickBooks database. 
Thus this error message has shown up on the desktop screen. In the end, this closes the 
Windows as completely
close up or starts up. At the time of installation of QuickBooks software into an OS, if 
facing or encounter 404 error code then we advise users get to trace how this error can 
troubleshoot.
It was found to be more helpful & get to troubleshoot the difficulty. QuickBooks Error Code 
404 arises because of many certain reasons. So it's highly important that you just find out 
every single possible reason to prevent it and obligate from such kind of glitches in your 
systems.
Symptoms of QuickBooks Error Code 404
•    Error code 404 displays and it harms all accounting active programs.
•    The device gets crashes with error code 404 when reaching to run any program.
•    On a screen of your system, mistake code 404 is going to be displayed.
•    This brings the window sluggish and responds too slowly to a mouse or a keyboard input.
•    At the time, your computer will get periodically freezes for a couple of seconds.
•    QuickBooks installation isn't properly installed.
Prime Causes of QuickBooks Error 404
•    Damage your installation of an error code 404 or get incomplete your QuickBooks 
software.
•    The application is malicious that deletes our company access files instantly.
•    The QB software gets corrupt or it's incomplete when a user will download or install 
anything.
•    Your system's Windows registry gets corrupt simply because of adjusting like 
installation or uninstallation of QuickBooks associated with this software.
•    If your system is already existing or gets infected. Having a virus or malware effect 
can cause the corruption of all system files or folders. It's associated with QB program 
files.
•    If installing the other then change your program updates that can cause the 
corruption or deletion of QB-related files accidentally.
Best Ways to resolve QuickBooks Error Code 404
Below we've given the possible solution for QuickBooks error 404. You'll follow the given 
steps or
contact the QuickBooks premier support team to save lots of your precious time and 
efforts.
Method 1: Verify your Internet Speed
•    Firstly you move to 'Internet Explorer and open any website.
•    Then the user finds an error opening with the URL, refresh the net setting and check 
out it again.
•    If the user is still facing the problem then turn off your wireless router and open the 
URL again.
•    In case you discover a similar problem again, then restart the pc system and take a 
look at it again.
•    Fix the 'Internet Explorer' as the default browser.
•    Lastly, the user can contact their 'Internet service provider' if the above steps aren't 
helpful.
Method 2: Make changes in your Internet Settings
Firstly click 'Internet Explorer' >> 'Tools' >> 'Internet Options'.
•    After that click on 'Security Tab', and choose the 'trusted sites'> > 'Sites'.
•    Add '*.intuit.com' and '*quickbooks.com' as the trusted sites.
•    Select 'Close' then 'OK' button.
•    Log out and shut QuickBooks.
•    Reopen 'QuickBooks > Open company file > Perform the job where you encountered 
QB Error 404.
Method 3: Update your QuickBooks to the latest release
•    Open the QuickBooks and move to the 'Help menu'.
•    After that choose 'update QuickBooks'.
•    Close the QuickBooks once the updating process completes.
•    Open the file and begin doing the tasks damages by QuickBooks 404 Error.
•    If the issue still exists, proceed for QuickBooks Repairing as mentioned below:
•    Press the 'Windows +R 'keys together.
•    Type "Appwiz.cpl" in the given box at the lowest left corner of the screen.
•    From the list of installed programs, choose QuickBooks then click on 'Repair'.
•    You need to attend to the repair process until it gets complete.
Method 4: Recheck the System Settings
•    First, you'll open QuickBooks and the company files.
•    Locate the method where the users face QB Error 404.
•    Update the Windows system and restart the pc.
•    Go to 'Internet Explorer'>> 'Tools menu'>> 'Internet Options'.
•    Then, select the tab and browse within the 'settings'pane.
•    Close all the programs and save the data.
•    Press the Windows + R 'keys together and click on the 'OK button.
•    Go to 'Startup Selection 'then >> 'Selective Startup'>>then 'OK'button.
•    Restart your computer.
Conclusion..!
Apparently, you made QuickBooks free from QuickBooks update error 404 with the steps. 
We've got a positive feeling that the steps are performed within the order recommended to 
urge eliminate error 404. In some cases, the above-mentioned steps might not help and you 
continue to find trouble while using QuickBooks.