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QuickBooks Error 6105

QuickBooks Error 6105

Get professional support to fix the QuickBooks Error 6105 effectively

QuickBooks error 6105 occurs because of damage to the company file. If your company file is damaged or corrupted, then you won’t be able to access it until you repair the damage using various utilities already present in QuickBooks. You may have to rely on security software to get rid of any malicious programs on your system. Data recovery tool that you can find in the company file folder can also help in restoring transaction details that you entered before the software crashed unexpectedly

Further, you may have to work with a backup file to restore the most recent version of your company file if you get the QuickBooks Error 6105. This file is required in cases in which there is permanent damage to the company file and the various utilities available in QuickBooks cannot fix the issue.

QuickBooks Error 6105 - Company file Damage

In this post, you’ll learn how to fix QuickBooks error 6105.

Error: QuickBooks error 6105

Reasons for QuickBooks error 6105:

  • Damage to the company file
  • Issues with internet explorer or firewall
  • Malicious program encrypting the company file
  • Another version of QuickBooks present on server computer
  • System crashed unexpectedly

What is QuickBooks error 6105?

QuickBooks error 6105 suggests a damage to your company file, but it may occur because of network issues as well. Because of this error, you won’t be able to access your company file nor compress it to reduce memory allocation. Further, it can prevent you from hosting multi-user access, which is available in all the latest editions of QuickBooks.

Solutions for QuickBooks error 6105

QuickBooks Error 6105 has several solutions that differ on the basis of the underlying cause. So you can choose the cause most likely to cause this error and then proceed to fix the company file error.

Solution #1:  Remove malicious software

In some cases, users have reported that they caught QuickBooks Error 6105 after their security software found malware or any other malicious software on the system. These malicious programs can often encrypt or damage your files so it may become impossible to recover such data.

You have to make sure that you remove such programs by scanning your system regularly with a good security software

Here are the steps to look for ransomware or malware when you get QuickBooks Error 6105:

  1. Go to the start menu and click on file explorer
  2. In the search box type QuickBooks and choose the folder in the C drive.
  3. Now find any files that mention decrypt or instructions.
  4. Read the instructions and find out if you can get your data unencrypted. 

Even though you may be tempted to pay out the ransom and get your data back, we recommend that you simply restore a backup copy so that you don’t have to engage with people who rely on such schemes to extort money from honest, hard working people.

Solution #2: Restore a backup file

You can create backup files in QuickBooks in order to ensure that all of your data is safely and securely available to you if anything happens to the company file. If your computer crashes or you find that you need to undo changes in your company file or get your data back from a damaged company file, then a backup copy is likely to be very helpful for you.

Follow these steps to restore backup copy when faced with QuickBooks Error 6105:

  1. Go to the file menu.
  2. Click on open or restore company.
  3. Choose the option to restore a backup file
  4. Click on next, then select local backup, then click on next once again. 
  5. Once you click on browse choose the backup file that you want to restore by navigating to it. 
  6. Now click on open and wait for quickbooks to create a new company file from the chosen backup file.

Storing a backup file can give you your data back, but you will have to restore the data that was entered after the creation of the backup file. You can use the auto data recovery tool in this case to get those transactions back but only if you didn’t work with the software after it crashed.

Solution #3 : Auto data recovery tool

If you simply want to recover data that was lost because of the software crashing unexpectedly, then you can rely on the autodata data recovery tool that is present in QuickBooks. You can further try out Intuit data services which helps data recovery by backing up all of your data on a cloud server. 

Note: Auto data recovery is a really fast way to get your data back, but it cannot bring back all of your data, but rather only the transactions.

QuickBooks Error 6105 caused in these two cases can be fixed with auto data recovery tool:

  • You can use it with your transaction log file to create a copy of your company file.
  • You can use it to get back all of the data entered in the past few hours into the company file or the transaction log file.

Auto data recovery tool is available in all editions of QuickBooks desktop, except the Accountant editions. You can access the tool from the folder containing the damaged company file.

Solution #4: Reinstall QuickBooks on server computer

Users who cannot use the multi user mode because of QuickBooks Error 6105 can reinstall the software on their server in order to enable the multi user mode. In some cases, quickbooks has had problems with properly functioning when another version of the same software is installed on the server. In such cases even the database server manager can interact and interfere with the different editions and copies.

In order to uninstall quickbooks and then install it again when getting the QuickBooks Error 6105, you need to follow these steps:

  1. Go to the start menu
  2. Click on the Control Panel
  3. Now choose the program and features option. 
  4. Click on uninstall a program. Click on QuickBooks and choose and Uninstall.
  5. Wait for the process to complete. Now launch the setup for your version of QuickBooks. 
  6. Agree to the terms and conditions then click on next.
  7.  Enter the license information and product number
  8. Follow the on screen instructions and choose the installation type according to your requirement. 
  9. Click on finish when the installation is done.

Now you’re done with the installation, and you can launch QuickBooks. When you try to go into the multi-user mode, you should not receive the quickbooks error 6105.


It may take some time, but usually users can easily resolve the error through these four solutions. We’ve provided step by step solutions to make it easier for you to follow along and fix the quickbooks error 6105. And we’ve also given you instructions on enabling multi-user mode when you receive this error.

Frequently Asked Questions (FAQs)

  1. Does quickbooks error 6105 mean that my company file is permanently damaged?

    In a lot of cases, it has been found that there is permanent damage to the company file. However some cases show that the error can occur when quickbooks cannot function properly with the network because of Internet explorer settings or issues with firewalls. Further, another copy of the same software can interfere with the actions and processes of this one. So even though company file damage is a reason for this error, it is not necessary that your company file may be damaged if you get quickbooks error 6105.

  2. How do I recover my company file data if I don’t have a backup file?

    If you’re getting quickbooks error 6105, then your company file may be damaged. If you don’t have a backup file then recovering your data can be very difficult. But you can rely on our data recovery services. We will create an encrypted network through which you can send your company file. Our software experts will then use proprietary software to recover your data and create a new company file with that. Then we will send you the company file over the same secure network so that you can get back to work on your contact data.

  3. Is there a way to resolve quickbooks error 6105 without uninstalling the software from my server computer?

    No, there isn’t. You’ll have to reinstall the software so that you can start working with the multi-user mode enabled. Further, you may have to remove database server manager related to any other edition of the same software.

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