> 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/nextseq-1000-2000/instrumentation-nextseq-1000-2000-troubleshooting-list/000005227.md).
# Troubleshooting Failed to execute connectivity check input parameters on the NextSeq 1000/2000
The “Failed to execute connectivity check, input parameters are invalid" error can appear when there are network or internet connection issues with the selected output folder. This error occurs when selecting the output folder from **Settings** menu of the NextSeq 1000/2000 control software.
**Potential Causes include:**
* Invalid Output folder.
* BaseSpace Hosting Location is not selected.
**Troubleshooting steps:**
1. Verify the output folder selected is a valid folder.
* See Knowledge Article: **Networking and output locations on the NextSeq 1000/2000**.
2. Select a Hosting Location from the **Connectivity** > **Hosting Location** Dropdown menu.
If unable to resolve the error, contact [Illumina Technical Support](https://www.illumina.com/company/contact-us.html#/united-states/technical-support) for further guidance.
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| *For any feedback or questions regarding this article (Illumina Knowledge Article #5227), contact Illumina Technical Support* [*techsupport@illumina.com*](mailto:techsupport@illumina.com?subject=Question%2FFeedback%20Regarding%20Illumina%20Knowledge%20Article%20#000005227%20-%20Instrumentation%20\&body=Dear%20Illumina%20Technical%20Support,%0D%0A%0D%0A)*.* |
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