# You cannot access your file system
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There are a number of potential causes for being unable to access your file system, each with their own resolution, as follows.

## The Elastic IP address attached to the file system elastic network interface was deleted
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Amazon FSx doesn't support accessing file systems from the public Internet. Amazon FSx automatically detaches any Elastic IP address, which is a public IP address reachable from the Internet, that gets attached to a file system's elastic network interface.

## The file system elastic network interface was modified or deleted
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You must not modify or delete the file system's elastic network interface. Modifying or deleting the network interface can cause a permanent loss of connection between your VPC and your file system. Create a new file system, and do not modify or delete the FSx elastic network interface. For more information, see [File system access control with Amazon VPC](limit-access-security-groups.md).