# Troubleshooting Invalid Role Errors after Post Run Washes on the MiSeq

Users may encounter an error stating "Invalid Role" after completing a post-run wash on their MiSeq. This error prevents users from navigating back to the Home screen within the MiSeq Control Software (MCS)

![](https://761066130-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FGM9W2DuBTgEXv1ClCm8H%2Fuploads%2Fgit-blob-e2d7e8e056cf83eb3c431f4b446d35b2caa94abd%2Fimage1.png?alt=media)

This error may occur due to a transient communications error onboard the instrument or be the result of a required password update for Local Run Manager manifesting within MCS. In order to troubleshoot this error:

1. Exit MCS. This may require force-close the software through the Task Manager.
   1. Press Control + Alt + Delete
   2. Select **Task Manager**
   3. Select **MiSeq Control Software** and select **End Task**.
2. Use Chromium to open Local Run Manager. If a password update is required, this will automatically be indicated upon logging into Local Run Manager. More information can be found in the Knowledge Base Article [Unlocking an account or resetting the password on Local Run Manager version 4](https://knowledge.illumina.com/software/on-instrument-analysis-software/software-on-instrument-analysis-software-troubleshooting-list/000009008)
3. Once the password is updated (or if login has been successful), power cycle the instrument.
   1. For power cycling instructions, please refer to the Knowledge Base Article [How to shut down or power cycle the MiSeq](https://knowledge.illumina.com/instrumentation/miseq/instrumentation-miseq-reference_material-list/000001894/?utm_source=agent\&utm_medium=email\&utm_campaign=kb)

If the error persists after power cycling the instrument, contact [Illumina Technical Support.](https://www.illumina.com/company/contact-us.html#/united-states/technical-support)

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