---
title: "Improved Dropbox Support with Short-Lived Tokens and PKCE"
slug: "improved-dropbox-support-with-short-lived-tokens-and-pkce"
updated: 2023-11-13T23:28:36Z
published: 2023-11-13T23:28:36Z
canonical: "docs.retrospect.com/improved-dropbox-support-with-short-lived-tokens-and-pkce"
---

> ## 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.

# Improved Dropbox Support with Short-Lived Tokens and PKCE

Resources

Retrospect Backup 18.2 for Windows and Mac includes significant updates for Dropbox support.

## Dropbox Short-Lived Tokens

Retrospect Backup 18.2 and higher supports Dropbox’s new OAuth workflow with short-lived tokens. There is no user-facing change to be aware of. Retrospect Backup automatically switches from the existing long-lived token to the new short-lived token.

## Previous Releases: Retrospect 18.1.1 and Earlier

Existing Dropbox backup sets will continue to function. You’ll be able to back up to them and restore from them. However, you will not be able to create a new Dropbox backup set or rebuild an existing Dropbox backup set. You will see one of the following errors:

Backup and restore will log "error -1017 (insufficient permissions) and displays media request"

Recycle on Windows: "Can’t open Backup Set for writing, error -1102 (drive missing/unavailable)"

Recycle on Mac: "RefBackupset::Recycle error"

The previously-issued ("long-lived") access token that Retrospect stores persistently in the configuration file for existing backup sets will continue to be accepted by Dropbox as valid authentication and should not expire.

## Dropbox PKCE

Retrospect now has PKCE support for Dropbox authentication. You can read more about PKCE in this

Last Update: September 29, 2021