My company has a backup server that has a space in its name ("Foo Bar").

I am trying to add the login credentials for this server to Windows Credential Manager, but I receive a canned error response (I am assuming this is due to the space. No space, no error):

Windows cannot save this information. Make sure the information is correct
and that all required fields are completed. 

Error code: 0x80070057. 
Error message: The parameter is incorrect

I have tried the following:

  • Its network IP address (credential manager doesn't seem to ID an IP and server name as the same?)
  • \\Foo Bar\foobar
  • "\\Foo Bar\foobar" (same 0x80070057 error)
  • \\Foo%20Bar\foobar (does not link to the server)
  • \\FooBar\foobar (doesn't ID)
  • \\Foo-Bar\foobar (doesn't ID)
  • "Foo Bar" (same 0x80070057 error)

Unfortunately, I do not have permission to undertake the simplest solution (properly naming the server!).

Any ideas?

  • Are you sure you don't have permission to give the server a proper name? There may be two ways to do that. #1: Adjust the server's name, on the server. #2: Give the server another name. Adjust name resolution. (a.k.a., try adding a DNS entry, possibly as CNAME, or try modifying a hosts file.)
    – TOOGAM
    Jun 22, 2017 at 4:41
  • I understand you've tried several different host names. But besides showing us those host names you tried, can you tell us just what you're doing? I'm suspecting using a command line: can you show an entire example of a tried command line?
    – TOOGAM
    Jun 22, 2017 at 4:42

2 Answers 2


If you can successfully connect to the share via Net Use I believe you can use the /savecred option to save those credentials into the WCM.

You will probably have to enclose the server/share name in quotes to prevent confusion by the space. IE: Net Use K: "\\Server Name\ShareName"

For the net use command to save the credentials in Credential Manager, use the /savecred switch. When you use the /savecred switch, any credentials that you are prompted for when you use the net use command are saved as a key.

Info here and here.

  • Since the domain name is the server name, I'm having trouble using Net Use to connect; when prompted for the user name, using any of foo bar\user, "foo bar"\user, user@foo bar, "foo bar\user" throws an invalid user name response.
    – Nick
    Aug 25, 2011 at 17:42
  • 1
    Aha, I was able to bypass the space in the domain by using %domain%\user
    – Nick
    Aug 25, 2011 at 17:47
  • After successfully connecting via net use with the /savecred switch, I'm not seeing the credentials in WCM :\
    – Nick
    Aug 25, 2011 at 17:49
  • @hztetra - Crappy. (Un)Fortunately I've never actually had to do this in practice.. :) Maybe try both "/Savecred" and "/Persistent:Yes"? I doubt it'll help, but should be an easy test. :) Aug 25, 2011 at 17:58
  • Also adding Persistent:Yes does not load the credentials into WCM either! I'm feeling defeated, heh.
    – Nick
    Aug 25, 2011 at 18:01

You can use the ^ to escape certain characters in Windows as well. Not sure if it will work but try \Foo^ Bar\foobar

  • Using a carrot did not work unfortunately :(
    – Nick
    Aug 25, 2011 at 17:42
  • 1
    "The ampersand (&), pipe (|), and parentheses ( ) are special characters that must be preceded by the escape character (^) or quotation marks when you pass them as arguments." Unfortunately those are the only characters you can escape in a Windows command-prompt. Aug 25, 2011 at 17:54

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