# User accounts and password management on the NextSeq 1000/2000

The NextSeq 1000/2000 Operating system has three accounts:

* Root (super administrator)
* ilmnadmin (administrator)
* ilmnuser (user)

The administrator account is intended only for applying system updates, like updating the NextSeq 1000/2000 Control Software, or for use by IT staff to mount a persistent network drive. Perform all other functions, including sequencing, from the user account.

The Field Service Engineer (FSE) initiates a password change for all three accounts after completing instrument installation. Update each password every 180 days, when prompted.

Table 1: Default Password Policies

<table data-header-hidden><thead><tr><th valign="top"></th><th valign="top"></th></tr></thead><tbody><tr><td valign="top">Policy</td><td valign="top">Setting</td></tr><tr><td valign="top">Enforce password history</td><td valign="top">Five passwords remembered</td></tr><tr><td valign="top">Lockout threshold</td><td valign="top">Ten invalid login attempts</td></tr><tr><td valign="top">Minimum password length</td><td valign="top">Ten characters</td></tr><tr><td valign="top">Minimum character variety</td><td valign="top">Three each of: number, upper case letter, lower case letter, and symbol</td></tr><tr><td valign="top">Maximum repeating character</td><td valign="top">Three characters</td></tr><tr><td valign="top">Password must meet complexity requirements</td><td valign="top">Disabled</td></tr><tr><td valign="top">Store passwords using reversible encryption</td><td valign="top">Disabled</td></tr></tbody></table>

If locked out of user account, search for Knowledge Base article **How to change passwords on the NextSeq 1000/2000.**\
To create a new user account, search for Knowledge Base article: **How to create new user accounts on the NextSeq 1000/2000.**

See the [NextSeq 1000/2000 Product Documentation](https://support-docs.illumina.com/IN/NextSeq10002000/Content/IN/FrontPages/NextSeq10002000.htm) for more information.

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| *For any feedback or questions regarding this article (Illumina Knowledge Article #3040), contact Illumina Technical Support* [*techsupport@illumina.com*](mailto:techsupport@illumina.com?subject=Question%2FFeedback%20Regarding%20Illumina%20Knowledge%20Article%20#000003040%20-%20Instrumentation%20\&body=Dear%20Illumina%20Technical%20Support,%0D%0A%0D%0A)*.* |


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