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How to Determine QuickBooks Update Error 1603?

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quickbooks update error 1603

QuickBooks update error 1603 is bizarre; it occurs while installing QuickBooks or performing any task on QuickBooks. The primary reason for the error is Windows Security. Windows don’t allow new programs to install or operate due to corrupted Microsoft .NET Framework. There are many other reasons which can be responsible for the error. But this issue can be fixed with some minor changes. So to fix the issue, this blog will help you. It also provides you with the proper explanation for the error.

What is QuickBooks Update Error 1603?

QuickBooks error 1603 is mainly an installation error that occurs while running the QuickBooks installer file on the system. This happens due to corrupted installation components such as Microsoft MSXML and .NET Framework. You can see the error on your screen – Error 1603: Fails to run the installer. These Microsoft components can give rise to errors like 1935, 1733, and 1903.

quickbooks update error 1603

Why Does QuickBooks Update Error 1603 Falls?

As we mentioned above, the primary reason for the error is the corrupted Microsoft components. But it can fall due to other reasons mentioned below:

  • An improper Download QuickBooks.
  • Doesn’t match the QuickBooks system requirements.
  • Using an Outdated Windows. QuickBooks requires Windows 8.1, 10, and higher
  • System antivirus prevents running the QuickBooks installer file.
  • Accidental deletion of QuickBooks files.

How to Resolve QuickBooks Update Error 1603?

You can fix the QuickBooks error 1603 easily; you just have to perform the given methods:

Method 1: Run Install Diagnostic Utility

The QuickBooks Install Diagnostic Tool fixes the installation issues you face. The Tool is only accessed from the QuickBooks Tool Hub, as all the Diagnostic Tools merge after an update. So, to use the Install Diagnostic Tool, use the Tool Hub. If you don’t have it, then Download QuickBooks Tool Hub version,, and install it. After the installation, perform the below steps:

  1. Firstly, open the QuickBooks Tool Hub.
  2. Secondly, go to the Installation Issues tab.
  3. Now, select the Install Diagnostic Tool. The tool will open in 20 minutes.
  4. After that, the tool detects and fixes the issues.
  5. When the tool fixes, restart your computer.

Method 2: Update Windows

As we discussed above, outdated Windows can be a reason for Update QuickBooks error 1603. If we explain, you are downloading the latest version of QuickBooks Desktop, but it is compatible with Windows 8.1, 10, and higher, so when you try to install it in older Windows, it shows an error. There is also a reason that QuickBooks stops its security for Windows 7 and lower. Now follow the steps:

  1. Go to the Windows Start.
  2. Then, select Settings.
  3. Now, click on Update & Security.
  4. After that, choose Windows Update.
  5. Click on the Check for Update
  6. If you see any update, then install it.
  7. After the update, restart your computer.

If you are facing an error while accessing QuickBooks, then open QuickBooks Company File If facing an error while installing, then try to Install QuickBooks Desktop again.

Method 3: Repair Microsoft Components

If the QuickBooks Install Tool doesn’t fix the installation issues, then you have to repair the Microsoft components to get rid of the QuickBooks update error 1603. Now, go with the following:

The following repairing Microsoft components process is for Windows 8, 8.1, and 10.

  1. Firstly, close all the running programs and go to Windows Start.
  2. After that, search for the Control Pane
  3. Open the Control Panel.
  4. Click on Programs and Features.
  5. Now, click on Uninstall a Program. We are not uninstalling anything.
  6. Next, pick “Turn Windows Feature On or Off.”
  7. Afterward, search .NET Framework from the list.
  8. Check the settings for both .NET Framework 4.5 and 3.5 SP1

Following are the given steps to check and fix the QuickBooks update error 1603.

Check .NET Framework 4.5 or Higher

When the .NET Framework 4.5 checkbox isn’t marked:

  1. Choose the checkbox to enable .NET Framework 4.5.
  2. Then, click on OK to save the changes.
  3. Restart your Computer.

When the checkbox .NET Framework is marked already:

  1. Choose Disable .NET Framework 4.5.
  2. Click on OK and save the changes.
  3. Restart your computer.
  4. Follow the Enable .NET Framework 4.5 steps when signed back into Windows.

Check .NET Framework 3.5 SP1

When the .NET Framework 3.5 SP1 checkbox is not marked:

  1. Choose the .NET Framework 3.5 SP1 checkbox to Enable
  2. Click on OK.
  3. Restart your Computer.

When the .NET Framework 3.5 SP1 checkbox is marked already:

  1. Choose the Disable checkbox of .NET Framework 3.5 SP
  2. Click on OK.
  3. Restart your Computer.
  4. Follow the Enable .NET Framework 3.5 SP1 steps when signing back into Windows.

Method 4: Use Selective Startup to Install QuickBooks Desktop

Sometimes, the system antivirus and spyware programs hinder the operation or installation of QuickBooks. So, how do I fix error 1603 in QuickBooks, use the Selective Startup, and Install QuickBooks? The following are the steps:

If you have any company file data, then create a backup of the data.

Step 1: Enable Selective Startup Mode

  1. Firstly, press the Windows +R keys to access the Run
  2. Then type MSConfig in the run field and click on OK.
  3. Now, click Selective Startup and Load System Services from the General tab.
  4. After that, choose the Services tab and click on Hide all Microsoft Services.
  5. In the next step, click on the Disable All
  6. Now, unmark the Hide all Microsoft Services
  7. Ensure that the Windows Installer checkbox is marked from the services list. If not, then choose it.
  8. Click on OK.
  9. At last, click on Restart from the System Configuration

Step2: Uninstall and Install QuickBooks Desktop

To fix the QuickBooks update error 1603, you must perform a clean install. We will uninstall and install the QuickBooks Desktop. To uninstall QuickBooks Desktop:

Note:If you don’t have QuickBooks installed on the system and face an error while installing, install the QuickBooksDesktop from a new end. You can skip the uninstall QuickBook Desktop step.

  1. Press the Windows+R keys and access the Run
  2. Then type Control Panel in it and click OK.
  3. Now, go to Program and Features and choose to Uninstall a Program.
  4. After that, choose the QuickBooks Desktop program and click on Uninstall.

When done with the uninstallation, Install QuickBooks Desktop again.

Step 3: Restore to Normal Mode

When the QuickBooks Desktop is installed in the system, switch back to normal mode to completely fix the QuickBooks update error 1603. The following are the steps:

  1. First, press the Windows +R keys to access the Run
  2. Then type MSConfig in the run field and click on OK.
  3. Now, from the General tab and click onNormal Startup.
  4. Click on OK.
  5. At last, click on Restart from the System Configuration

Finishing Up

QuickBooks update error 1603 is an annoying error that occurs while installing the QuickBooks Desktop. Some users stated that it also happens while operating QuickBooks right after installation. So, to resolve your problem, we present this blog with different methods to fix the error. If the error continues, then you can contact ProAdvisors via Email or Live Chat and get the best answer to your concern. Thank You!



Q. What causes QuickBooks Update Error 1603, and what does it indicate?

A. QuickBooks Update error 1603 occurs during software installation and prevents it from ending correctly. Possible causes include incompatible apps, obsolete Windows components, and restricted user access. Try restarting your computer, installing it as an administrator, repairing the.NET framework, or temporarily disabling your antivirus software to see if this resolves the issue.


Q. How can I fix QuickBooks Update error 1603?

A. Possible fixes for QuickBooks Update error 1603 include restarting your computer, installing QuickBooks as an administrator, repairing the.NET framework, and temporarily disabling your antivirus software. If following these procedures does not resolve the issue, contact QuickBooks support for more assistance.


Q. If I get QuickBooks Update error 1603, will my data be lost?

A. No, there will be no data loss due to QuickBooks Update error 1603. The issue does not impact your existing QuickBooks data or files; it just affects the installation process.


Q. If QuickBooks Update error 1603 occurs, can I still use QuickBooks?

A. You cannot utilize QuickBooks if you get Error 1603 during installation. To effectively install and utilize QuickBooks, you must take action to resolve the issue. You will be unable to use the program until the issue is resolved.

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