Technical bugs can be very annoying, and when it comes to QuickBooks accounting software, there can be certain errors that might trouble you. One of the common error you may see is QuickBooks update error 12045. Well, this error is an update error that can be seen due to slow internet connection. This error code is seen when you try to update the latest version of QuickBooks.

You might come across to this problem when trying to update the latest version of QuickBooks. This error appears with an error message that states as:

Error Message: Error 12045: Failed to download the update

To get an in-depth information related to QuickBooks error 12045, make sure to stick around the segment till the end.

What makes the QuickBooks error code 12045 appear?

As we mentioned earlier, this error can be triggered due to a couple of factors. These factors include the following:

  • One of the major reasons can be if the date and time settings are incorrect on your system.
  • If there is damage in the updated company file.
  • Another reason for the same can be due to multiple desktop version installed in the software.
  • If your software is unable to link with the Intuit server.
  • Also, just in case the internet settings aren’t proper.

You may also see: Methods to Combine Reports from two or More Company Data Files

Methods to troubleshoot the QuickBooks error 12045

You can try to troubleshoot the QuickBooks error code 12045 by performing the below set of steps and procedures.

Method 1: Configure the firewall settings of the PC

You can perform the below steps, so as to get rid of the QuickBooks error 12045. The steps to configure the firewall settings of the PC are as follows:

QuickBooks Database Server Manager Port monitor tab - Screenshot
  • Furthermore, you would have to save the port number of the version you have of QuickBooks.
  • You need to then open the Windows firewall.
  • Followed by opening the Windows firewall and select the advanced settings.
  • Opt for the inbound rules and also select new rule.
Create a new rule in firewall settings - Screenshot
  • Choose port option.
  • Ensure that the TCP is enabled.
  • Furthermore, mark the specific local ports and type in the port number in the box.
QuickBooks Firewall Port (Create a New Rule) - Screenshot
  • Hit next tab.
  • Select the allow the connection tab.
Allow the connection - Screenshot
  • Hit Next tab and assign a new name to the rule.

For outbound rules, perform similar steps.

Method 2: Check the settings of the internet connection

In case the first method failed to work for you, then in that case you can perform the steps to check the settings of the internet connection.

  • At first, you would have to open QuickBooks software.
  • You would further have to run the help section and select internet connection setup.
  • Select use my computer’s internet connection settings to establish a connection when this application accesses the internet.
  • Choose next tab.
  • Head to the advanced connection settings and go for restore advanced settings.
Restore advanced settings - Image
  • Now hit ok tab.
  • And also reboot the QuickBooks and update it again.

Also see: How to Fix QuickBooks Error 6000, 83 (Company File Error)?

Method 3: Correct the date and time on the PC

  • In this process, you would have to right click on the clock on the desktop.
  • Choose adjust time/date.
  • Select change date and time.
  • Also, add the correct date and time and hit ok tab.
System Date and Time Settings - Image
  • Reboot the system and QuickBooks desktop.
  • Lastly, Update QuickBooks again.

Method 4: Delete the other installation of QuickBooks desktop

Just in case you have installed the same version of QuickBooks twice on your system, then in that case it might end up in update error. You would have to delete another copy of QuickBooks. This error can be instigated due to this reason, which can resolved by deleting the other installation of QuickBooks desktop.


That was all you need to know about QuickBooks error code 12045. As always, if you have any queries, comments, or concerns, call us immediately at 1-800-615-2347. Our QuickBooks desktop technical support team will be more happy to assist you.


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