Re: can't switch to enable mode

Hi

I'm also facing the same issue. It worked perfectly till last week. I'm unable to enter into the 'enable' mode now. What would the cause of this issue mostly? 

>enable

Authentication failed.

Details of switch version:

>show version

System Description................ Dell Ethernet Switch
System Up Time.................... 108 days, 18h:10m:04s
System Contact....................
System Name....................... SW3-NAD
System Location...................
Burned In MAC Address............. F8B1.5619.A4B0
System Object ID.................. 1.3.6.1.4.1.674.10895.3037
System Model ID................... PCT7048P
Machine Type...................... PowerConnect 7048P

unit image1 image2 current-active next-active
---- ----------- ----------- -------------- --------------
1 5.1.9.4 5.1.10.1 image2 image2