Search for:

Available article translations:

Unable to log in to virtual machines through Power Panel

Article ID: 111185, created on Apr 25, 2011, last review on Jan 1, 2016

  • Virtuozzo 6.0
  • Virtuozzo hypervisor
  • Virtual Automation 6.0


When you try to log in to a virtual machine through Power Panel with valid credentials, you get the following error:

An invalid username or password. Please try again.

An invalid username or password. Please try again.

Similar errors are observed in the Power Panel log:

~# tail -f /var/log/pva/pp/2011.02.17-cpcon.log
17/02/2011 23:21:12.0267720 [18712] : virtual AuthResult ::SsoVEuserAuth::log_on(WebCP*, const HttpRequest&, const VZL::VZLGUID&, const VZL::eid_t&, Session**) at AuthMethods/SsoVEuserAuth.cpp:118 : (SSO) No SAML token in request - user is not authenticated.

Direct login via command line also fails:

~# prlctl auth VMNAME --username root --userpassword PASSWORD
Authenticating user with VM security database...
Failed to authenticate user with VM security database: Unable to authenticate the user. Make sure that the specified credentials are correct and try again.

You know that the credentials are valid because you are able to log in to the virtual machine with these credentials by SSH/RDP.


NOTE: Prior to troubleshoot the issue make sure all pending updates for Parallels software are installed.

The virtual machine has an unsupported partition configuration, e.g. reiserfs:

~# prlctl enter VMNAME
/dev/sdb1 on / type reiserfs (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)

or Logical Volume Group:

~# prlctl enter VMNAME
-bash-3.2# mount
/dev/mapper/VolGroup00-LogVol00 on / type ext3 (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
/dev/hda1 on /boot type ext3 (rw)
tmpfs on /dev/shm type tmpfs (rw)
none on /media/psf type prl_fs (rw,nosuid,nodev,sync,noatime,share,)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)

or, the system volume in Windows Virtual Machine is a Dynamic Disk.


Partitions of this kind are currently not supported inside virtual machines, so please use plain partition without LVM on Linux and Basic NTFS disks on Windows instead.

Search words:

cannot login

can't access the PP on 4648

offline management

login fails

power panel

An invalid username or password. Please try again.

unable to login

can't access the PP on VM

No SAML token in request - user is not authenticated

2897d76d56d2010f4e3a28f864d69223 a26b38f94253cdfbf1028d72cf3a498b 319940068c5fa20655215d590b7be29b 0dd5b9380c7d4884d77587f3eb0fa8ef 0889ab60fa6494de107aa7338c3c38b6 c62e8726973f80975db0531f1ed5c6a2

Was this article helpful?
Tell us how we may improve it.
Yes No
Server Virtualization
- Odin Cloud Server
- Odin Containers for Windows 6.0
- Odin Virtuozzo Containers
- Odin Automation
- Odin Automation for Cloud Infrastructure
- Odin Business Automation Standard
- Odin Virtual Automation
- Odin Plesk Panel Suite
- Web Presence Builder
- Odin Plesk Automation
- Odin Small Business Panel
- Value-added Services for Hosters
- Odin Partner Storefront
Services & Resources
- Cloud Acceleration Services
- Professional Services
- Support Services
- Training & Certification