How to Fix QuickBooks Error H303

Are you finding a way to resolve QuickBooks Error H303? Don’t worry, here you will get the best solution to resolve your QuickBooks error. This QuickBooks error indicates to you that some company file of QuickBooks needs an additional configuration that is located in your computer. So without getting stress to let’s know its causes and procedure to solve this error Quickly.

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As you know, QuickBooks allows many users to access it and while operating QuickBooks software by many users for the same result then some results missing or software fails to access the company file. This condition is a big reason for QuickBooks h505, h303, h101 series errors these are quite common errors display on your computer screen. Now let’s start the blog:

Causes and Symptoms of QuickBooks Error H303

Read the below section to know the reasons and solution for this error code:

Reasons for the QuickBooks Error code H303

  • The blocked communication process of QB files by Firewall.
  • Computer network slow to access the file,
  • Some incorrect settings in internet hosting configuration.
  • Unable server to communicate with QB.
  • Wrong setting of DNS and damage QB.nd files.

Because of the above reasons, the QuickBooks error H303 message comes as a pop-up and you can’t access your QuickBooks company file. so now need to overcome this error and Quickly fix it.

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Ways to Fix QuickBooks Error Code H303

There would be some causes in your computer such as networking issue, domain names issue and many. So first you should check the solution and follow one by one steps to solve QuickBooks error h303. When you follow the first solution and this error would be fixed then don’t try the next solution. If the First solution is not working properly then move on to the next steps.

Solution 1 – Check QuickBooks Setting

  • First of all, launch the ‘QuickBooks in multi-user mode‘ option.
  • In the next step select the same file in both systems.
  • After go for the ‘Files’ tab, and choose the ‘Utilities’ option.
  • Then select the ‘Stop hosting multi-user configuration’ option.
  • Now you have to choose any one of the system to turn on the hosting. .
  • Then go for the ‘Utilities’ option and click on the ‘ Host multi-user configuration’ option.
  • At the last step, restart the QuickBooks on both systems.

Solution 2- Create a New Folder

  • Change the QB folder location to resolve this error.
  • Create a new folder in your hosting computer.
  • Then Copy QB.qbw file.
  • Now paste it in a new folder and access it in multi-user mode.

Solution 3- Check File Setting

  • First, click on the control panel.
  • Then, go to the firewall setting and select Allow programs.
  • Click on Add QuickBooks latest version.
  • After it, Restart your computer to fix error H303.

if you still see error H303, move on to the next solution(D).

Solution 4- Check Domain Name Issues

  • Check QuickBooks company configured to open the file using a Full Qualified Domain Name.
  • It contains the alphabetic name of the computer on the network like (
  • And check your computer’s numeric name(IP
  • Then, make sure your server’s name and the computer network is using numeric names instead of alpha names.

Now check for the result, error h303 has been fixed or not. If the answer is yes then don’t follow other steps.

Solution 5- Use the QuickBooks Tool hub

While using QuickBooks, users face QB error and solve it QuickBooks file doctor and QuickBooks tool hub. So by using tool hub fix QuickBooks error H303


When you are working with QuickBooks in multi-user mode rarely you may be facing this error and during this error, you are not able to access your QuickBooks file and data. Its means some component or files are missing that stop application to access additional files. If in case, you need any help then, you can get our ProAdvisor support at any time and anywhere through the toll-free number +1-855-422-5334.

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How To Resolve QuickBooks Error H303?