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 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.

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.

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 + ".".

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.

Customers are responsible for using the following software.

• 7-Zip
• WinZIP
• WinRAR