Quickest Ways to Resolve QuickBooks Error 400 Smoothly

Have you been stuck with the QuickBooks Error 400 while linking with the bank account or adding employee details? This is the most common issue that strikes when the QuickBooks Online server can’t process the request sent because of the corrupt data being sent. However, when the error appears, it flashes the message stating, “QuickBooks Error 400: The remote server returned an error- Bad Request.”

In this post, we have covered all the root causes along with the best troubleshooting methods to overcome QuickBooks Error Code 400.

Table of Contents

Reasons Why Status Code 400 in QuickBooks Online Appears

Before jumping to the troubleshooting part, let’s learn about the root causes behind the Status Code 400 in QuickBooks Online.

You might experience the QuickBooks Error Code 400 due to the banking server being down.
The users aren’t well-connected with a high-speed or stable internet connection.
Storage of excessive browsing history, cache files, and cookies might prevent users from linking to the bank account.
Working on an outdated web browser to log into your QuickBooks Online.
The web browser you are using is outdated.
Sometimes, the QuickBooks Error 400 may arise due to a problem with the bank or credit card website.

Best Troubleshooting Techniques to Fix QuickBooks Status Code 400

After understanding the causes that trigger QuickBooks Status Code 400, let’s study the troubleshooting methods to fix the issue. Below, we have discussed all the possible solutions in detail.

Method 1: Erase the Intuit-Specific Cookies

At times, the excessive storage of the browsing history may slow down the performance of the browser. Therefore, to resolve the issue, you must delete the Intuit-specific cookies by performing the steps.

For Google Chrome Users

Initially, launch the Chrome web browser and then hit the More icon in the top right corner.
After this, head to the Settings icon and choose the Privacy and Security tab.
Following this, pick the Cookies and other site data, and then head to the See all cookies and site data.
Afterward, provide Intuit in the search console to search for the Intuit cookies.
Now, hit the Trash icon or remove all shown options.
Once you are all sorted, exit from the Chrome browser and relaunch it for the changes to take effect.

For the Safari Users

In the beginning, tap on the Safari icon from the top left corner and then choose the Preferences tab.
After that, choose the Privacy option and then hit the Manage Website Data.
Now, insert “Intuit” in the search console to locate the Intuit cookies.
You must hit the Remove All tab and then the Remove Now option.
Complete the process by hitting Done, and then Restart Safari to make the necessary changes.

Method 2: Start Updating Your Bank Account

It is essential to update your bank account to refresh the connection between QuickBooks and the bank. As a result, it will help in addressing the QuickBooks Error Code 400.

Begin the process by launching the QuickBooks Online application on your PC.
After this, move to the Banking tab and then click on the tile above your account.
As a result, it will let you update the specific account successfully.
Now, you must tap on the Update option and then do as per the on-screen instructions to complete the process.

Method 3: Review Your Bank Website

The QuickBooks Error 400 indicates that you won’t be able to connect QuickBooks to the server. So, to rectify the issue, you must check whether the bank server is operational. For that, you must perform the steps written below.

Initially, access your bank or credit card website and then try to log into it.
After this, if you see that the login is successful, skip to the next solution.
However, if you notice that the bank or credit card server is down, then wait for the issue to be resolved. Herein, you may also connect with the support to get any additional information.

Method 4: Update the Connection Between QuickBooks & Financial Institution

Updating the connection between QuickBooks and your financial institution will help restore the connection to keep the financial records up to date. For that, you first have to disconnect and then reconnect the bank account.

Disconnecting the Bank Account

In the initial stage, head to the Transactions menu in the QuickBooks Online application and then hit the Bank Transactions tab.
Now, you must pick the file for your bank account.
After that, hit the Edit icon and then choose the Edit Account Info tab.
Thereon, you must circle the checkbox for “Disconnect this account on save” and hit the Save and Close tab.

Reconnecting the Bank Account

In the beginning, browse to the Transactions tab and click on the Bank Transactions by selecting the drop-down menu.
After that, hit the Link Account tab and pick a bank account from the list. Otherwise, you can locate your bank name by the bank name or with its URL.
Now, choose the Continue tab and log in to your bank account with the correct sign-in details.
Then hit the drop-down arrow and pick the dates to extract transactions and the account you want to connect.
Afterwards, pick the account type that tallies with the chart of accounts in QuickBooks and then hit the Next tab.
Following this, you must pick the Bank or Credit Card to connect from the Account Type drop-down menu. If you pick the Bank Account, in detail type, then opt for the Savings or Checking tab.
Now, name your bank account and hit the Save and Close tab.
After this, map your bank account in the Existing Accounts drop-down and hit the Connect > Done tab.
Return to the Bank Transactions screen and tap on the Update option. As a result, it will eventually start downloading your bank transactions.

Method 5: Make Use of The Supported Web Browsers

At times, users might encounter QuickBooks Status Code 400 while running an unsupported web browser to log in to the bank website. Below, we have mentioned the supported web browsers to run online banking in the QuickBooks Online application.

Web Browsers	Versions
Google Chrome	version 78 or newer
Mozilla Firefox	version 76 or newer
Microsoft Edge	version 79 or newer
Safari	version 12 or newer (Mac only)
Opera	version 68 or newer
Samsung	version 10 or newer

Method 6: Launch QuickBooks in Incognito Windows

An Incognito window or a private browser enables you to surf anything without saving the preferences or the search history. Therefore, to fix the issue, you must try downloading the bank transactions using an incognito window.

Mozilla Firefox/ Internet Explorer: Ctrl + Shift + P
Safari Browser– Command + Shift + N
Google Chrome – Ctrl + Shift + N

Method 7: Installing the Latest Web Browser Updates

Sometimes, the users might end up with the QuickBooks Error Code 400 due to outdated web browsers. Therefore, to install the browser updates, you must perform the following steps.

Chrome Browser

Launch the Chrome browser and then tap on the three vertically placed dots at the top right corner.
After this, head to the Help menu and choose About Google Chrome.
Thereon, move to the Update Google Chrome. If you fail to get this option, then it reflects that your browser is already up-to-date.
Once you have installed the browser updates, hit the Relaunch option to apply the mandatory changes.

Mozilla Firefox Users

Launch the Firefox browser and then hit the three vertically represented dots from the top-right corner.
Next, hit the Help menu and opt for the About Firefox option.
As a result, Firefox will eventually start checking for the updates and then download them if possible.
Once the download is over, hit the Restart to Update Firefox.

Microsoft Edge Users

Launch the Microsoft Edge browser on your workstation and click on the three vertically represented dots.
After this, head to the Help and Feedback and then choose the About Microsoft Edge option.
Now, you will see that MS Edge will eventually start looking for the updates.
If you get an update, then download and install it.
Once you are all set to install the updates, hit the Restart option.

Conclusion

Hopefully, we can ensure that by following the above solutions, you can easily resolve QuickBooks Error 400. Thus, it will let you download the latest bank transactions without any interference.

Frequently Asked Questions (FAQ’s):-

Question 1: What precautions must you take before fixing QuickBooks Error 400?

Ans. The following are the preventive measures you must consider before fixing QuickBooks Error 400.

Verify that your system is well-connected with a good internet connection.
Make sure you are working on the latest QuickBooks version.
Don’t forget to take a backup copy of the company file to prevent data loss.

Question 2: How Can You Identify the Occurrence of QuickBooks Error Code 400?

Ans. The following are the signs and symptoms that will help you detect the occurrence of QuickBooks Error Code 400.

You might experience the slow working of the QuickBooks Online application.
The users won’t be able to generate the connection of the QuickBooks Online application with the bank account.
In other cases, you may experience the sudden freezing or crashing of the QuickBooks application.

Question 3: In which QuickBooks versions do you encounter QuickBooks Error 400?

Ans. The users might encounter QuickBooks Error 400 in the QuickBooks Online and QuickBooks Self-Employed applications.

Question 4: What are the common reasons behind the QuickBooks Error Code 400?

Ans. The following are the root causes that might be responsible for the QuickBooks Error Code 400.

Issues with the connection of the QuickBooks Online application to your bank account.
Browsing history or cache files interrupts while downloading the bank transactions.
Using the unsupported version of QuickBooks and the Windows operating system.

Question 5: Does the arrival of QuickBooks Error 400 affect the company data?

Ans. No, the occurrence of QuickBooks Error 400 won’t affect the company file data. But, for the safer side, it is essential to take a backup copy of the data file for the safety of the crucial data.

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About The Author

Jonathan Browns

Jonathan Brown is a trained QuickBooks professional with 10 years of experience in the accounting sector. Moreover, he is passionate about helping businesses reduce the stress of managing accounts. Also, he is proficient in assisting entrepreneurs and small business owners to use QuickBooks and enhance their accounting experience.

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