The documentation portal is undergoing maintenance. During this period, you can't create any new user credentials. If you do, you'll need to recreate the user credential after the maintenance period ends.
Effective Spring 2018, Informatica no longer provides a Content Installer utility for accelerator files and reference data files. To add accelerator files or reference data files to an Informatica installation, extract and copy the files to the appropriate directories in the installation.
Previously, you might use the Content Installer to extract and copy the files to the Informatica directories.