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Top Methods to Solve QuickBooks 502 Bad Gateway Error 

• 
• By Jonathan Browns
• Aug 08, 2025
• Accounting
• 7 min read

Users often encounter the QuickBooks 502 Bad Gateway error while trying to launch their QuickBooks account via a web browser, but this error is restricted to the Online variant. However, this error indicates that one server gets an invalid response from another server. This issue is mainly triggered due to the excessive browsing history or due to the presence of viruses or Trojan infections. In this detailed post, you will get to know about the root causes along with the solutions to fix QuickBooks Error Code 502. 

What Do You Understand By QuickBooks Error 502 Gateway?

QuickBooks Error 502 Gateway states that the HTTPS status code server receives an invalid response from another server on the internet. Every time you reach the webpage, the browser saves some data in the form of cache or browsing data. However, the excessive storage of browsing history fails to hold the data and results in QuickBooks Error Code 502. 

Reasons Why QuickBooks Online 502 Bad Gateway Error Appears 

The following are the top causes that might be responsible for the occurrence of the QuickBooks Online 502 Bad Gateway Error. So, let’s have a look at all those causes written below. 

• The web browser you use to access the QuickBooks Online account contains excessive browsing history. 
• Intuit isn’t included as a trusted site in your web browser. 
• You have switched off Active Scripting in the settings of your web browser. 
• Sometimes, the QuickBooks Error 502 may appear when the Trojan infection infects the browser’s internal file. 

Rectifying QuickBooks Online App Error 502 Bad Gateway Instantly

After understanding the causes, let’s have a look at the solutions to fix QuickBooks Online App Error 502 Bad Gateway. Make sure that you have generated a backup copy of the data file and that your system is getting a proper network connection. 

Solution 1: Turn On Active Scripting in Internet Explorer 

To disable Active Scripting in Internet Explorer, follow the given steps. 

• Launch the Internet Explorer application and then head to the Internet Options from the Tools menu. 
• After this, launch the Internet icon beneath the Security tab. 
• Now, head to the Custom Level and click the Enable tab for Active Scripting.
• Once all the changes are made, click the OK button to complete the process. 

Solution 2: Remove the Cache & Cookies Of Your Browser 

Go through the instructions presented below to delete the cache and web browser browsing history. Thus, it will prevent the users and help them access the QBO account smoothly. 

Chrome Browser 

• Initially, launch the Chrome browser and hit the three dots in the top right corner.
• Afterwards, move your cursor over More Tools and hit the Clear Browsing Data.
• Now, you must assure that the All Time checkbox is selected in the Time Range drop-down list.
• Next, you must mark the checkboxes of Browsing History, Cookies, and Other Site Data, and the Cached Images and Files boxes.
• Thereon, tap on the Clear Data button.

For Firefox

• Initially, tap on the three bars at the top right and choose the Options tab.
• Afterwards, pick the Privacy and Security tab. Then, place a tick mark beside the Cookies and Site Data and Cached Web Content checkboxes.
• Now, tap on the Clear button.

For Internet Explorer

• Start the process by accessing Internet Explorer. 
• After this, click on the Tools option at the top of the screen.
• Now, you must head to the Internet Options.
• Thereon, start searching below the General tab, and click on Delete.
• Afterwards, place a tick mark beside the Temporary Internet Files and Cookies checkboxes.
• Conclude the procedure by tapping the Delete button.

Solution 3: Include Intuit As a Trusted Website in Your Browser 

The following are the instructions that will help you include Intuit as a trusted website in your web browser. 

For Internet Explorer

• In the beginning, choose the Internet Options below the Tools option in the Internet Explorer browser.
• Afterwards, pick the Trusted Sites option present below the Security tab.
• Now, hit the Sites and then insert *.intuit.com. Then, verify that you unmark the “Require server verification (https:) for all sites in this zone checkbox.
• At last, complete the process by hitting the Add, then click Close and OK.

For Safari on Mac

• Initiate the process by launching the Safari browser. 
• Now, insert intuit.com in the address bar, and press Enter.
• Afterwards, you must hit the Bookmarks tab and click the option Add Bookmark.
• Next, select the Top Sites and then hit the Add option from the Add this Page drop-down list. 

Solution 4: Start Downloading the Bank Transactions Manually 

If the above solutions won’t help you resolve the QuickBooks Online 502 Bad Gateway Error, you can try downloading the bank transactions manually. For that, you must carry out the steps given below closely. 

• Firstly, move to the Banking menu and pick the account that you wish to update. 
• After that, tap on the Update tab. 

Thereon, if you notice any duplicate entries, there might be a chance that the bank has sent them twice. This situation usually appears when the bank has gone under maintenance, and you receive the update after that. Herein, you can also exclude them from the downloads transaction page. For that, perform the steps given below. 

• Initially, move to the Banking page and browse to the Review tab. 
• After this, choose the For Review tab and then mark the duplicate entry. 
• Now, tap on the Batch Actions button and pick the Exclude Selected option. 

Conclusion

In this post, we will walk you through all the causes and solutions to resolve the QuickBooks 502 Bad Gateway error. Thus, it will let you launch the QuickBooks Online account without any trouble. Furthermore, if you are facing any trouble, stop worrying and connect with our QB professionals for assistance. They will guide you in the best possible manner.