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Lexmark T656

Lexmark T656

'Login Failed' Message when Using Basic Security Setup Password with Special Characters

What you will see

Error message when using Basic Security Setup... Using passwords that comprise...

" Login failed "

Special characters, symbols, or signs such as \, ~, /, ^, @, ),?,and others

Affected Products

Thus far, this issue has been seen on these particular products:

  • MS, M, CX, XC, MX and XM Series printers; i.e., MX811de
  • T65x Series laser printers and related products.

Suggested Remedy

If... Then... And...
your device's firmware level is current...Contact Lexmark Technical support for a possible firmware solution. Reference this article's ID (SO7556).
you are not sure if your device firmware levels are current...

View the values under Device Information. You can view this information via a printed Menus Settings page or the device's embedded Web server.

Update device firmware to see if the problem resolves itself. If the problem persists, contact Lexmark Technical Support.

To locate the latest firmware available, go back to your product's support page or visit your product's support page via

Still Need Help?

If updating firmware does not fix this problem, contact Lexmark Technical support. Exit this article and locate

Get In Touch with Lexmark! for contact information.
When calling for support, you will need your printer model/machine type and serial number (SN).

Please be near the products described in this article to expedite the support process and reduce call-back situations.


Audience: Lexmark and Support Partners

Additional Information

PE Firmware fix information

MS, M, CX, XC, MX and XM products; i.e., MX811de productsT65x products

Firmware level .P362 or greater

LR.JP.P674.arm9jp.fullnet.fls or greater

Symbols of concern

`Acute, Back quote, Grave, Grave Accent, Left Quote, Open Quote, or a push
!Exclamation mark, Exclamation point, or Bang
@Ampersat, Arobase, Asperand, At, or At symbol
#Octothorpe, Number, Pound, Sharp, or Hash
£Pounds Sterling or Pound symbol
$Dollar sign
¢Cent sign
¥Chinese Yuan
$Generic currency
§Micro or Section
^Caret or Circumflex
&Ampersand, Epershand, or And
*Asterisk (sometimes referred to as Star)
(Open Parenthesis
)Close Parenthesis
-Hyphen, Minus or Dash
{Open Brace, squiggly brackets, or curly bracket
}Close Brace, squiggly brackets, or curly bracket
[Open bracket
]Close bracket
|Pipe, Or, or Vertical bar
\Backslash or Reverse Solidus
/Forward slash, Solidus, Virgule, or Whack
"Quote, Quotation Mark, or Inverted Commas
'Apostrophe or Single Quote
<Less Than or Angle brackets
>Greater Than or Angle brackets
.Period, dot or Full Stop
?Question Mark


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