The QuickBooks Error H303 usually appears when QuickBooks Company files require additional configuration. The main reason for the QB error H303 accessing the file of the company that is attacking another laptop so the laptop needs additional setup and installation.


  1. If the corporate file communication process is blocked by the firewall.
  2. Corrupted or incorrect file.ND can cause an H303 error.
  3. The computer network is incorrect.
  4. Due to incorrect setup settings.
  5. The software for accounting code cannot encompass the company’s files that unit is hosted by the server or data process address.

QuickBooks Error Code H303: Solution

Solution 1: transfer and install QuickBooks File Doctor

Before harassing the QuickBooks File Doctor Tool, follow the steps listed below:

  • Make sure {simply | just} has a place in QuickBooks on the server.
  • Now, use QuickBooks File Doctor.
  • Troubleshoot the error associated with QuickBooks Multi-User Hosting.

Solution 2: Check that the QuickBooks Settings unit is correct or not

  • First, open QuickBooks in multi-user mode.
  • After that, select files on all computers, visit Files> Utilities> Stop Hosting Multi-User Configuration.
  • Select any computers and turn on hosting on them. For this, visit Resources> Manage Multi-User Configuration.
  • Lastly, you should start QuickBooks at some point on all computers.

Solution 3: QuickBooks Folder case modification

  • On a portable computer, generate a replacement folder.
  • Set and share Windows access permissions so you can share company files.
  • Copy the .qbw file and paste it into a new folder.
  • Access company files in multi-user mode.

Solution 4: Reset firewall settings

  • Go to “Control Panel”.
  • Select firewall settings.
  • Now, choose to enable the Program using the firewall.
  • In a separate list, select Add and Add QuickBooks 20xx programs.
  • Restart QuickBooks to confirm whether the changes have been made or not.

The solutions provided above should fix the QuickBooks Error code H303, however, if you experience any interruptions using any of those solutions, or if the error does not resolve, reach out to us on our eBetterBooks Support number +1-844-929-2244 for immediate support.


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