---
title: "Error -1001 (unknown Windows error) when copying security information"
slug: "error-1001-unknown-windows-error-when-copying-security-information"
updated: 2023-11-09T01:23:34Z
published: 2023-11-09T01:26:19Z
canonical: "docs.retrospect.com/error-1001-unknown-windows-error-when-copying-security-information"
---

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

# Error -1001 (unknown Windows error) when copying security information

Resources

Free up additional disk space and try the backup again.

Last Update: February 13, 2012