How to Troubleshoot QuickBooks Error -6073, -99001

Error Codes: (-6073 -99001)
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If you are using QuickBooks in a multi-user environment, then more than one user can access the company file at the same time if they have the necessary file access rights. An error that you might face while opening the company file is an error -6073, -99001 where you get an error message “QuickBooks is unable to open this company file. It may have been opened by another user” Error codes: (-6073, -99001). This article is intended to walk you through each step of error removal. Follow the complete article for detailed troubleshooting instructions.

If you want to talk to a QuickBooks Desktop expert, then call QuickBooks Desktop Support Phone Number (844)-888-4666

Why Error -6073, -99001 occurs in QuickBooks

QuickBooks Error Message 6073 99001
QuickBooks Warning Error 6073 99001
  1. Some other user has already opened the file using single user mode.
  2. The network folder in which the company file is located is a read-only folder.
  3. The company file is located on a Linux server and user is using multiple login passwords to access the shared folder.
  4. You are trying to access the company file using a remote access tool like (Team Viewer, Go to Assist, etc.)

Steps to Fix QuickBooks Company File Error -6073, -99001

Troubleshooting Step 1: Download and Run QuickBooks File Doctor

For detailed instructions on how to download and run QuickBooks File Doctor, follow our article How to Fix Damaged Company file or Network using QuickBooks File Doctor?

Troubleshooting Step 2: Switch QuickBooks to Multi-User Mode
  1. Exit QuickBooks Desktop application on all workstations in the network.
  2. Now access the company file on the hosting server.
  3. Click Switch to Multi-User mode under the File tab.
  4. If the error persists, restart all computers in the network.
Troubleshooting Step 3: Open the Company File in Multi-User Mode
  1. Open the company file on the host computer.
  2. Under the File tab, click Close Company.
  3. Now open the company file again.
  4. From under the File tab, click Open or Restore Company.
  5. Click Open a company file and then click Next.
  6. Click Open file in multi-user mode.
  7. Finally hit Open.
Troubleshooting Step 4: Allow Full Control to the Network Folder
  1. Navigate to the company file folder on the hosting server.
  2. Right-click the folder and choose Properties.
  3. Under the Security tab, select the user account that is experiencing problems while logging in.
  4. Click Edit and checkmark Allow option for Full Control.
  5. Click Apply and then OK.
Troubleshooting Step 5: Verify the Running Processes under the Task Manager
  1. Press Ctrl + Alt + Delete key together to open Task Manager.
  2. Under the Processes tab if you see processes running under the username of the system that is facing problems then reboot your PC.

Some users have reported that they still get Error 6073, 99001 even after following all the troubleshooting in the given order, this happens when there are errors in Window’s registry or if the system is infected with virus or malware. QuickBooks Support team provides a complete solution to this error by scanning the system for registry errors and by removing malicious infections. If you need help, you can call (844)-888-4666 QuickBooks Desktop Customer Service Number now.

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