The message text for this particular Windows Installer error code 1639 is: “Invalid is almost certainly a command line argument.” This error can occur if the username, also known as the company name, contains special characters such as double quotes, classes, scopes, or an empty string (null value).
The screenshot of the error is excellent below. The assembly package encountered an error. The windows installer returned 1619. Please give me solution A. This is indeed due to some changes in this registry that disable Windows autostart.
This error can be corrected by using special software that automatically repairs the registry and adjusts the computer settings to restore stability.
When the Windows Installer determines that a product may not be compatible with the current operating system, it may display a dialog informing the user and offering to install it anyway. This HTML error code is returned when the user detects that the installation failed.
How do you fix an error occurred installing the package Windows Installer returned 1639?
To the decision
- go to system properties; Windows XP. Click Start > Run > sysdm type.cpl. …
- Select Advanced on most tabs.
- Click the Environment Variables button in the lower right corner.
- Change the TEMP and TMP conditions to a different location. For example instead of; …
- After making changes, click OK and try to download the installer again.
How do you fix the installer has encountered an unexpected error installing this package error code 2503?
Fix error 2502 2503 and possibly uninstall during installation
What kind of error occurred in class failed to load either due to not being on the classpath or due to failure in static initialization Noclassdeffound error stackoverflow error out of memory error file found error?
NoClassDefFoundError – This key fact means an exception indicating that the class could not be successfully loaded, either because it is probably missing from the classpath or because static initialization failed. OutOfMemoryError – This exception means that this JVM has no extra memory to allocate large objects.

Ermias is a tech writer with a passion for helping people solve Windows problems. He loves to write and share his knowledge with others in the hope that they can benefit from it. He’s been writing about technology and software since he was in college, and has been an avid Microsoft fan ever since he first used Windows 95.