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I'm having trouble mounting a share on my XenServer (5.6 FP1). From the command line I try:

mount.cifs //server/share /mnt/share -o credentials=credfile

The contents of credfile is:

username=Administrator
password=What@zR\!p3s

When I run the above mount command I get "Access Denied". However if I run the following command it works:

mount.cifs //server/share /mnt/share -o username=Administrator,password=What@zR\!p3s

Please note the "\" is to escape the bang and I've tried this with and without it in the credentials file. Any suggestions?

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6 Answers 6

A common issue with old versions of mount.cifs was that the newline at the end of the file was kept as part of the password.

So you shouldn't need to escape, and should try to rewrite this file without a trailing newline.

To do so in vim, use :set noeol binary before saving. You can check that there is no trailing newline with xxd credfile, and confirm that it does not finish with 0a.

If this doesn't work, I'll have to check your exact codebase. Which package (distribution, version and release) or source (archive name) are you using for cifs-utils?

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Another thing to try is to type the special character twice... I had a password with a $ in it, and had to replace it with $$. However, I'm currently having issues with the carrot: '^'

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For mount.cifs version 4.5 the following worked for me: credentials in order of domain, username, password, no newline after the password, no escaping of special characters or quotes.

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Yeah but that didn't work for me, thanks @lessnoise –  David George Jul 24 '12 at 16:11

I have the same problem because my password contain comma symbol (i.e. "PASS,WORD"):

$ sudo mount -t cifs -o domain=mydomain,username=myuser,password=PASS,WORD //server/share localfolder
mount error(22): Invalid argument
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)

At first, you should try enable verbose mode (--verbose option):

$ sudo mount -t cifs -o domain=mydomain,username=myuser,password=PASS,WORD //server/share localfolder --verbose
mount.cifs kernel mount options: ip=172.30.91.137,unc=\\server\share,WORD,user=myuser,,domain=mydomain,pass=********

Here I see my problem. Comma breaks all stuff. Solution is use credential file. What is written in man mount.cifs:

credentials=filename specifies a file that contains a username and/or password and optionally the name of the workgroup. The format of the file is:

          username=value
          password=value
          domain=value

This is preferred over having passwords in plaintext in a shared file, such as /etc/fstab. Be sure to protect any credentials file properly.

Create this file any way you like:

$ cat > cifs.credo
username=myuser
password=PASS,WORD
domain=mydomain

and use (--verbose can be omitted)

$ sudo mount -t cifs -o credentials=path/to/cifs.credo //server/share localfolder --verbose
mount.cifs kernel mount options: ip=172.30.91.137,unc=\\server\share,user=myuser,,domain=mydomain,pass=********

No problem with password.

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Try quoting it.

I.e.,

password="What@zR!p3s"

And I hope that's not really your password. If it is, you now need to change it.

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No that is not a real password. Second, I've already tried both suggestions with same result. Have also tried literal quotes, ie. >> ' –  David George Sep 8 '11 at 16:01

Have you tried removing the slash? completely? I don't believe the credentials file should need to be escaped at all. It needs to be escaped on the shell because the shell is interpreting the characters, not the mount.cifs command.

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Yes, I've also tried it without the backslash in the credentials file. And I still get the access denied error. –  David George Sep 9 '11 at 14:14

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