Error message when you try to install an application on a Windows Vista SP1-based or Windows 7 computer: "Command line option syntax error."

KB Article:


Consider the following scenario.

  • You are running a Windows XP Service Pack 3 (SP3), Windows Vista Service Pack 1 (SP1) or a Windows 7 based computer
  • You use a user name that includes a double-byte character set (DBCS) character.

When you try to install an application that uses the Microsoft Visual C++ 2005 Redistributable Package, you receive the following error message:

Command line option syntax error. Type command/? For help.

Comments (4)

  1. Abu Sufian says:

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  3. Bob Hyatt says:

    My Modem pooped out and I bought a new one from an AT & T store. The Internet Exployer works but everything I want to do on my computer and my guest wants to do we keep getting a box asking for my computer ID all the time. It calls itself Content Advisor by Windows Microsoft. How can I stop this box from popping up every time we use a different page on the sites we are on?

  4. felisia says:

    Does it work for Windows 8? I have the same problem saying "command line option syntax error. Type command /? for help" while installing an upgrade for bluetooth driver. Thank you