The QuickBooks error 1642 is an installation and update error that can occur when you try to install or update the QB Desktop application. It generally occurs due to a problem installing the NET Framework while installing the QBDT software. It can hamper your workflow and important business processes. You can fix it by reinstalling the QuickBooks Desktop app. In this blog, we’ll cover all the troubleshooting methods you need to fix the QB error code 1642. First, let’s start with the causes of the QuickBooks error message 1642.
Are you having trouble installing or updating your QuickBooks Desktop application? Contact our experts at 1-855-888-3080 today to resolve your issue in no time!
Table of Contents
Potential Causes of the QuickBooks Desktop Error 1642
Given below are the factors that can trigger the QuickBooks error code 1642 to appear on your screen:
- The Windows installer is not accessible
- The QuickBooks installation file is damaged
- Microsoft .NET Framework can be damaged
- Incorrect date and time settings of your PC can also cause this
- Your Firewall might be blocking the QB Desktop app
These are the causes of the QuickBooks Update error 1642.
Methods to Resolve the QuickBooks Installation Error 1642
The troubleshooting methods to resolve the QuickBooks Desktop Point of Sale error code 1642 are given below:
Use the QB Install Diagnostic Tool
You can use the QuickBooks Install Diagnostic Tool from the QB Tool Hub to resolve QBDT error 1642 with the following steps:
- Download and install the QuickBooks Tool Hub
- Open the Tool Hub app
- Navigate to the Installation Issues tab
- Click on the QuickBooks Install Diagnostic Tool

- Let the tool run
- It can take up to 20 minutes to finish working
Now, you will be able to install the QB Desktop application.
Check the Date and Time Settings of Your PC
If the date and time settings of your PC are incorrect, you can face the QBDT update error 1642. To resolve it, change the date and time settings of your PC with the following steps:
- Right-click the system clock on your PC
- Click on Adjust Date/Time

- Press Change date and time
- Specify the current date and time
- Hit OK twice
- Close and reopen the QBDT app
Now, you would be able to update the QuickBooks Desktop application.
Make Firewall Exceptions for the QBDT App
You can make Firewall exclusions for the executable files of the QBDT application to resolve the QuickBooks error 1642 with the following steps:
Executable Files of QB Desktop
| Executable Files | Their File Path |
| AutoBackupExe.exe | C:\Program Files\Intuit\QUICKBOOKS YEAR |
| Dbmlsync.exe | C:\Program Files\Intuit\QUICKBOOKS YEAR |
| DBManagerExe.exe | C:\Program Files\Intuit\QUICKBOOKS YEAR |
| FileManagement.exe | C:\Program Files\Intuit\QUICKBOOKS YEAR |
| FileMovementExe.exe | C:\Program Files\Intuit\QUICKBOOKS YEAR |
| QuickBooksMessaging.exe | C:\Program Files\Intuit\QUICKBOOKS YEAR |
| QBW32.exe | C:\Program Files\Intuit\QUICKBOOKS YEAR |
| QBDBMgrN.exe | C:\Program Files\Intuit\QUICKBOOKS YEAR |
| QBServerUtilityMgr.exe | C:\Program Files\Common Files\Intuit\QuickBooks |
| QBCFMonitorService.exe | C:\Program Files\Common Files\Intuit\QuickBooks |
| QBLaunch.exe | C:\Program Files\Common Files\Intuit\QuickBooks |
| QBUpdate.exe | C:\Program Files\Common Files\Intuit\QuickBooks\QBUpdate |
| IntuitSyncManager.exe | C:\Program Files\Common Files\Intuit\Sync |
| OnlineBackup.exe | C:\Program Files\QuickBooks Online Backup |
Make Exclusions for These Files
- Open the Start menu
- Search for and open the Windows Firewall

- Click on Advanced Settings
- Right-click on Inbound Rules
- Select New Rule

- Click on Program
- Hit Next
- Press the This Program Path option
- Select Browse
- Find and select one of the executable files given in the table above
- Hit Next
- Click on Allow the Connection
- Press Next
- Create a rule
- Name it something like “QBFirewallException(name.exe)”
- Repeat the steps for each executable file in the table
Repeat the steps to create Outbound Rules. This would resolve the QB error 1642.
Install the QB Desktop App in Selective Startup Mode
You can install the QB Desktop application in selective startup mode to fix the QuickBooks error 1642 with the steps given below:
- Press Windows + R to open the Run menu
- Type in msconfig

- Navigate to the General tab
- Click on Selective Startup
- Choose Load System Services
- Go to the Services tab
- Click on Hide All Microsoft Services
- Opt to Disable All
- Unmark Hide All Microsoft Services

- Hit OK
- Pick Restart in the System Configuration window
- Install the QB Desktop app
- Press Windows + R and open the Run menu
- Type in msconfig
- Hit OK
- Navigate to the General tab
- Opt for Normal Startup

- Select OK
- Restart your system
This would resolve the QuickBooks installation error 1642.
QuickBooks Error 1642 – A Quick View Table
Given in the table below is a concise summary of this blog on the topic of the QuickBooks error code 1642:
| Description | The QuickBooks error 1642 is an installation error that can occur while trying to install the QB Desktop application. This can hamper your workflow and important business processes. |
| Its causes | An inaccessible Windows installer, a damaged QB installation file, a damaged .NET Framework, incorrect date and time settings of your system, and the Firewall blocking the QuickBooks Desktop app. |
| Ways to fix it | Utilize the QuickBooks Install Diagnostic Tool, check the date and time settings of your system, make Firewall exceptions for the QB Desktop app, and install the QuickBooks Desktop software in selective startup mode. |
Conclusion
The QuickBooks error 1642 can occur when you try to install the QB Desktop application or update it. We have covered the potential factors that can trigger this issue, along with the troubleshooting methods needed to fix it, in this blog. If you are still unable to install or update your QuickBooks app, feel free to contact our experts at 1-855-888-3080 to resolve your problem today!
FAQs
Why am I seeing the QB error 1642?
You might be seeing the QB Desktop error 1642 due to these reasons:
– The Windows installer is not accessible
– The QB installation file is damaged
– Microsoft NET installation file is damaged
– Incorrect date and time settings on your PC
– The Firewall is blocking your QBDT app
How do I fix the QB error code 1642?
You can fix the QuickBooks error code 1642 with these methods:
– Utilize the QB Install Diagnostic Tool
– Verify the date and time settings of your system
– Make Firewall exclusions for the QBDT app
– Install the QBDT app in selective startup mode

Erica Watson is writing about accounting and bookkeeping for over 7+ years, making even the difficult technical topics easy to understand. She is skilled at creating content about popular accounting and tax softwares such as QuickBooks, Sage, Xero, Quicken, etc. Erica’s knowledge of such softwares allows her to create articles and guides that are both informative and easy to follow. Her writing builds trust with readers, thanks to her ability to explain things clearly while showing a real understanding of the industry.








