> For the complete documentation index, see [llms.txt](https://knowledge.illumina.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://knowledge.illumina.com/instrumentation/miseq-i100-series/instrumentation-miseq-i100-series-reference_material-list/000009338.md).
# How to change passwords for the Control Software accounts on the MiSeq i100 Series Instrument
**Background**
MiSeq i100 Series Control Software User accounts will require a password to login, and this password will need to be updated at regular intervals unless password expiration has been disabled. Administrators and Sequencer Operators accounts can update their password when prompted by a password expiration notification. Administrator accounts can reset Sequencer Operator and Administrator account passwords at any time.
When an Administrator resets a password for another User account, the User must sign in using the temporary password and then set their new password.
**To change the password**
1. Initialize the MiSeq i100 Series Control Software and log in to an Administrator or Sequencer Operator account.
2. Select the **menu icon** in the upper-left corner.
3. Select **Change password** at the bottom (**Figure 1**)
4. Enter Old password, New Password, then Confirm New Password (**Figure 2**).
5. Select **Save** when finished.
**Figure 1**: Home screen dropdown menu with **Change password** selection highlight.
**Figure 2**: Change password user interface (UI).
**To reset a Control Software User password**
1. Initialize the MiSeq i100 Series Control Software and log in to **an** **Administrator account**.
2. Select the **menu icon** in the upper-left corner.
3. Select **Settings**, and then select **Users**.
4. Select the **User** to edit.
5. Select **Reset password** (**Figure 1**)
6. Input **a new password** for the User account (**Figure 2**).
1. This password is a temporary password for that User account and must be changed on first login.
7. Select **Save** when finished.
**Figure 1**: The Edit User user interface highlighting the Reset password button.
**Figure 2**: The Reset password of operator user interface.
**Disabling Password Expiration**
1. Initialize the MiSeq i100 Series Control Software and log in to **an** **Administrator account**.
2. Select the **menu icon** in the upper-left corner.
3. Select **Settings**, and then select Password Policy.
4. Under Password expiry, select the radio button for **Password never expires**
5. Read the Security warning and select the checkboxes to confirm that you understand the risks associated with disabling password expiration, then select **Submit**.
6. Select **Save**.
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| *For any feedback or questions regarding this article (Illumina Knowledge Article #9338), contact Illumina Technical Support* [*techsupport@illumina.com*](mailto:techsupport@illumina.com?subject=Question%2FFeedback%20Regarding%20Illumina%20Knowledge%20Article%20#000009338%20-%20Instrumentation%20\&body=Dear%20Illumina%20Technical%20Support,%0D%0A%0D%0A)*.* |
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