[errorcodeexperts]

QuickBooks Error 6138, 105 is a common company file access error that usually occurs in multi-user environments. This issue appears when QuickBooks Desktop cannot access the company file because it is being used in a restricted mode by another user or due to network configuration problems. As a result, users are blocked from opening or switching company files.
If you're facing this error, this guide will help you understand its causes and provide practical solutions to fix it quickly.

What is QuickBooks Error 6138, 105?
QuickBooks Error 6138, 105 typically occurs when:

• A company file is opened in single-user mode by another user
  
  
• Multiple users try to access the file without proper hosting setup
  
  
• QuickBooks cannot establish a connection with the server
  

Error message example:
“An error occurred when QuickBooks tried to access the company file.”

Causes of QuickBooks Error 6138, 105
Here are the most common reasons behind this error:

• Another user is logged in with single-user access
  
  
• Improper hosting configuration
  
  
• Damaged .ND (Network Data) file
  
  
• Firewall or antivirus blocking QuickBooks
  
  
• Network connectivity issues
  
  
• Incorrect server settings
  

Symptoms You May Notice

• Unable to open the company file
  
  
• QuickBooks freezes or crashes
  
  
• Multi-user mode not working
  
  
• Error code 6138, 105 appears on screen
  
  
• Slow performance when accessing files
  

How to Fix QuickBooks Error 6138, 105
Follow these troubleshooting methods:

Solution 1: Ensure Multi-User Mode is Enabled

1. Open QuickBooks on the server
   
   
2. Go to File > Switch to Multi-user Mode
   
   
3. Ask all users to log out and reconnect
   

Solution 2: Check Hosting Configuration

1. Open QuickBooks on each workstation
   
   
2. Go to File > Utilities
   
   
3. Ensure only the server shows Host Multi-User Access
   
   
4. Disable hosting on all other systems
   

Solution 3: Rename the .ND File

1. Navigate to the company file folder
   
   
2. Locate the .ND file
   
   
3. Right-click and select Rename
   
   
4. Add .old (e.g., companyfile.nd.old)
   
   
5. Restart QuickBooks
   

Solution 4: Run QuickBooks File Doctor

1. Install QuickBooks Tool Hub
   
   
2. Open it and go to Company File Issues
   
   
3. Click Run QuickBooks File Doctor
   
   
4. Scan and repair the company file
   

Solution 5: Configure Firewall Settings

• Add QuickBooks as an exception
  
  
• Ensure required ports are open
  
  
• Check antivirus restrictions
  

Solution 6: Restart All Systems

• Restart the server and all workstations
  
  
• Reopen QuickBooks in multi-user mode
  

Final Thoughts
QuickBooks Error 6138, 105 is mainly caused by multi-user access conflicts and improper hosting setup. Ensuring the correct configuration, repairing network files, and using QuickBooks tools can resolve the issue effectively.
To avoid this error in the future:

• Use proper multi-user settings
  
  
• Maintain a stable network environment
  
  
• Keep QuickBooks updated
  
  
• Avoid opening files in single-user mode when others need access
  

If the issue continues, you may need advanced troubleshooting or expert assistance to restore access to your company file.