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Know Ways To Fix Windows Installer Error 1603 Quickly

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When the Windows installer error 1603 is triggered, the active window crashes. Upon encountering this error, your PC runs sluggishly, or the computer freezes periodically without any prior notice. You receive the Windows Installer 4.5 Error 1603 erro message. The error also arises when you are trying to install something on your Windows or upon using a Windows Installer package to install some program. If you are encountering the same error.

Primary Reasons Causing Windows Installer Error 1603

The Windows installer error 1603 is a runtime error. It may occur due to various reasons, a few of which are as follows:

Due to a corrupt or an incomplete installation of the Windows Installer software.
Also, if the Windows registry files can get corrupted and likely to cause the error.
Virus or malware attacks can also produce the error code 1603.
Lastly, if any file is maliciously or mistakenly deleted, you face the runtime error.

Easy Procedures To Resolve Fatal Error During Installation

To fix the error code 1603 quickly, you need to go through the following methods:

Method 1: Change Installation Location

To fix the installation error, first, you need to try the most primary solution. Try to change the installation location, and check if the error resolves. Create a new folder and use it to install the program that you download.

Method 2: Uninstall The Program

If the program is already installed, try to install it afresh and check if the error resolves. First, uninstall the program and re-install it. Uninstalling it will remove all associated bugs with the program.

First, you open the Control Panel.
Click on the Programs and then on the Programs and Features option.
Now, you need to locate the program you want to uninstall and then click on it. Click on the Uninstall option and then wait until the process completes.
Then, reboot your system.
Now, install the program again and check if the error resolves.

Method 3: Restart Microsoft Installer Service

You can also fix the Windows installer error 1603 by resetting the Microsoft installer service. First, you need to start the Windows Installer service.

From the keyboard, you need to press on both the Windows and R keys to invoke the Run dialog box.
When the window opens, enter the “services.msc” command in the empty field.
Now, you need to find and then double click on the Windows Installer option.
Hit on the Start menu then under the Service status you need to hit on OK.
Now, to re-register the Windows Installer service and follow the steps as given below:
First, click on the Windows logo key and R at the same time.
When the window opens, you need to type the “msiexec /unregister” command and hit the Enter key.

Method 4: Acquire Full Permissions On The Drive For Installation

The error may also arise if you don’t have full permissions on the file location to install them Go through the following steps to acquire permission:

First, you need to open the File Explorer, and then select Properties option.
Now, go to the Security tab and then click on Edit.
Then, click on the SYSTEM option and then check whether all the Allow box of every item in Permissions for SYSTEM. You need to do the same for the Administrators as well.
Now, click on OK, and then go back to the Properties dialog box.
Then, select Advanced and then on Change Permissions.
When the tab opens, click on the Administrators option and click on OK. You need to do the same steps, for System and then click on OK. When done, check if the Windows installer error 1603 still resolves.

Method 5: Scan Your Device

If your device is infected by virus or malware, you can encounter the Windows installer error 1603. Hence, run a full scan to detect the problems. Scanning will help to detect the problems and then upon removing them, you will not face the error again. If you do not have third-party antivirus software, you can use the Windows inbuilt antivirus software, Windows Defender.

Method 6: Update The Device Drivers

If you use a wrong, corrupt, missing or outdated driver, you encounter the same error. To fix the glitch, you can update the device drivers. You update the drivers both manually and automatically.

Manually Update
If you want to upgrade the driver manually, you need to visit the manufacturer’s website and fetch the latest version of the driver. Make sure that the driver you are installing is compatible with your device. Now, download and install the driver correctly and then restart the device when the process completes. Finally, check if the error is fixed or not.

Automatic Driver Update

1. First, run a full scan on your computer to look for problems with the driver.

2. When the window appears, you will receive two options: Update and Update All.
3. You can click on either of them. If you click on the Update option, the driver will download automatically, however, you need to install it manually.
4. Alternatively, you can also select the Update All option. Upon choosing this option, both the download and the installation of the driver will be automatic.

5. The process might take a few minutes to finish. When the installation completes, reboot your system and check if the error fixes.

Via Device Manager

Alternatively, you can also upgrade the driver via Device Manager. Follow the steps for a successful upgradation.

– First, you need to click on the Windows key and R at the same time to invoke the Run dialogue box.
– When the Run dialogue box appears on your computer screen, type ‘devmgmt.msc.’ Hit on the Enter key, and then the Device Manager will open.
– Double-click on the USB controllers option and then click on the ‘USB Composite Device’ option to select the ‘Update Driver Software.’
– Finally, click on the “Search automatically” option which we will search for the latest updates and then update the driver software.
– When the wizard appears on your computer screen, follow the instructions which appear to complete the process.
– When the process completes, reboot your system and check error persists.

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