> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ntop.com/llms.txt
> Use this file to discover all available pages before exploring further.

# The selected file could not be opened

## Issue:

When I opened my file I got this error message: The selected file could not be opened. It may be from an unsupported version of nTop.

![An Error opening file error message in nTop.](https://files.learn.ntop.com/help-articles/setup-and-install-troubleshooting/360104225713.png)

## Cause:

This issue is caused by the file saving as a larger size than it actually is, causing it to be unreadable.

## Solution:

Contact the [support team](https://support.ntopology.com/hc/en-us/requests/new) if you are encountering this issue.

## Keywords:

*error help open file could not version be can't issue opened unsupported*