# Backup Warnings - The supplied option --auth-password is not supported and will be ignored

**URL:** https://forum.duplicati.com/t/backup-warnings-the-supplied-option-auth-password-is-not-supported-and-will-be-ignored/7687
**Category:** Uncategorized
**Created:** [August 3, 2019, 5:04pm UTC](https://forum.duplicati.com/t/backup-warnings-the-supplied-option-auth-password-is-not-supported-and-will-be-ignored/7687 "2019-08-03T17:04:47Z")
**Posts on this page:** 1
**Showing post:** 7

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### Author: ![ts678](https://forum.duplicati.com/letter_avatar_proxy/v4/letter/t/8491ac/32.png) [@ts678](https://forum.duplicati.com/u/ts678)
#### Post date: [August 20, 2019, 3:42pm UTC](https://forum.duplicati.com/t/backup-warnings-the-supplied-option-auth-password-is-not-supported-and-will-be-ignored/7687/7 "2019-08-20T15:42:01Z")

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[–use-block-cache](https://duplicati.readthedocs.io/en/latest/06-advanced-options/#use-block-cache) creates a block lookup cache in memory to avoid DB. An early [test](https://forum.duplicati.com/t/duplicati-2-vs-duplicacy-2/592/55) didn’t see much gain. Seems pretty far removed from passwords, but you can certainly try removing it to see if it helps that issue.

As a note on exporting to JSON, this won’t pick up global options from [Settings](https://duplicati.readthedocs.io/en/latest/03-using-the-graphical-user-interface/#settings-in-duplicati), so look there, or instead do [Export](https://duplicati.readthedocs.io/en/latest/03-using-the-graphical-user-interface/#exporting-a-backup-job-configuration) As Command-line or [Commandline](https://duplicati.readthedocs.io/en/latest/03-using-the-graphical-user-interface/#using-the-command-line-tools-from-within-the-graphical-user-interface) to get a better view of what your backup would actually be using.

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