Before you run the client installer, verify the install package integrity through the cksum command. The cksum command calculates the checksum value for the installer.

Verify the checksum for the specific installer files against the checksum of the installation files downloaded from the Informatica Electronic Software Download site.

The following table lists the checksum and file size for Informatica client on Windows:

A checksum mismatch can occur when there are data errors during download due to network issues or when data corruption occurs in the file on disk. For more information about the checksum errors, see HOW TO: Identify file errors after downloading Informatica installation files.

The following table lists the minimum requirements to upgrade Informatica Developer:

Component	Requirement
Processor	1 CPU
RAM	1 GB
Disk spaace	8.505 GB

The following table lists the minimum requirements to upgrade the PowerCenter Client:

Component	Requirement
Processor	1 CPU
RAM	1 GB
Disk space	4.255GB

On Windows, the length of the entire installation directory path, including the zip file name, must be 60 characters or less. Verify that the zip utility version is compatible with the Windows operating system version. When you unzip the file, verify that the zip utility also extracts empty folders.