Cannot Extract a Zip File Containing a Client Certificate

Article Number:02068
Intended audience: cybozu.com Administrators

This page provides troubleshooting information related to client certificates of Client Certificate Authentication. The troubleshooting shows you solutions when you fail to extract a zip file.

The File Name of a Client Certificate Is Garbled

Cause

The login name of the user to whom a client certificate was issued contains a multi-byte character, such as Kana, Kanji, or full-width alphanumeric characters.

Solutions

Perform one of the following actions:

  • Extract the zip file on a PC running a non-Windows operating system.
  • Use software that can extract zip files.
    Example of Software That Can Extract Zip Files
  • Change the login name of the user to alphanumeric characters, and reissue a client certificate and then download the zip file again.

Extraction of Zip Files Fails

Cause

The login name of the user to whom a client certificate is issued meets any of the following conditions.

  • The login name exceeds 100 characters.
  • The login name is identical to one of Windows reserved device names.
  • The login name starts with a Windows reserved device name + ".".

Solution

Perform one of the following actions:

  • Extract the zip file on a PC running a non-Windows operating system.
  • Use software that can extract zip files.
    Example of Software That Can Extract Zip Files
  • Change the login name of the user to less than 100 characters, and reissue a client certificate and then download the zip file again.

Example of Software That Can Extract Zip Files

Customers are responsible for using the following software.

  • 7-Zip
  • WinZIP
  • WinRAR