QuickBooks consider being the most amazing financial management & accounting application created by the intuit. Also, QuickBooks Error 1603 comes whiles installing & updating QuickBooks. 

Symptoms of QuickBooks Error 1603 are: 

  1. Due to abolish of Microsoft NET 1.1 SP1 installer
  2. If the users make use of old QuickBooks version
  3. Overbuilt the Windows temp folders. 
  4. QuickBooks file is corrupted 
  5. Due to the Microsoft Windows installer corruption

Causes of QuickBooks Error 1603 are: 

  1. Attack of Malware or Virus suborned the Windows or QuickBooks files. 
  2. The system turns off the power failure
  3. Invalid entries in the registry of the Windows. 
  4. Windows registries are also corrupted in the frequent software modification of QuickBooks. 
  5. If the QuickBooks similar files are intentionally deleted.

Further steps are to know about how to fix QuickBooks error code 1603 are: 

Solution 1: Install, Download & Run QuickBooks Install tool.exe file

  1. Install & Download the QBInstallTool.exe file that has 648 Kb file size. 
  2. Store/Save this file type into the desktop/.
  3. Click on the saved QuickBooks file in an order to run QuickBooks download the diagnostic tool. 
  4. If your problem still carries on then you should follow the next method. 

Solution 2: Repair MSXML 4.0

QuickBooks Installation Process via CD

  1. Insert the CD of QuickBooks, if the installation of QB windows pop-up then it can be shut down. 
  2. Insert the MSXML in the operation by following instructions. 

 On Windows 7 or Vista:

  1. Click on the start or windows icon. 
  2. In the search box of dialogue type in exe/fvaum “D:/QBOOKS/msxml.msi in the search dialogue box then hit the enter tab. 

On Windows XP: 

  1. In the windows, the tab selects the run icon. 
  2. In the search open box, type in the ‘msiexc.exe/fvaum ‘D:/QBOOKS/msmxl.msi & click the OK icon.        

Solution 3: File Microsoft .Net Framework, MSXML & C++ issues

  1. Firstly, install the QuickBooks install diagnostic tool. It helps to fix problems affiliated with the .NET framework, MSXML & C++. 
  2. Log into the system as the admin account
  3. Open & Search the QuickBooks install diagnostic tool. 
  4. Hit & Install the diagnostic tool. 
  5. Click to download & save the file on the system
  6. Close all the background applications. 

Solution 4: Uninstall QuickBooks desktop

  1. Press the Windows+R keys on keyboard to open the Run command. 
  2. After the type in control panel then hit a click on OK button
  3. Hit a click on features & program option
  4. Choose the QuickBooks icon in the list of programs 
  5. Choose the uninstall/change option here.  
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