# Another (different?) Duplicity issue: XAmzContentSHA256Mismatch

**URL:** <https://discourse.mailinabox.email/t/another-different-duplicity-issue-xamzcontentsha256mismatch/12986>\
**Category:** Maintenance\
**Created:** [June 28, 2025, 11:52am UTC](https://discourse.mailinabox.email/t/another-different-duplicity-issue-xamzcontentsha256mismatch/12986 "2025-06-28T11:52:33Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![stephank](https://discourse.mailinabox.email/letter_avatar_proxy/v4/letter/s/85f322/32.png) [@stephank](https://discourse.mailinabox.email/u/stephank)\
**Post date:** [June 28, 2025, 11:52am UTC](https://discourse.mailinabox.email/t/another-different-duplicity-issue-xamzcontentsha256mismatch/12986/1 "2025-06-28T11:52:33Z")

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Hi Guys,  
could you please help me with my backups. I know duplicity has a problem, but i already updated to the newest version and i am still facing errors:

sudo ./mailinabox/management/backup.py  
Attempt of put Nr. 1 failed. S3UploadFailedError: Failed to upload /tmp/duplicity-p8uosmkr-tempdir/mktemp-7dhw9n1n-2 to mybackup/mybackup/duplicity-full.20250628T114514Z.vol1.difftar.gpg: An error occurred (XAmzContentSHA256Mismatch) when calling the UploadPart operation: None

Any ideas? Thanks a bunch!

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**Author:** ![system](https://discourse.mailinabox.email/uploads/default/original/2X/4/4d0933d13c456b7e57f296aa6cc344525b6f0c70.png) [@system](https://discourse.mailinabox.email/u/system)\
**Post date:** [August 7, 2025, 11:52am UTC](https://discourse.mailinabox.email/t/another-different-duplicity-issue-xamzcontentsha256mismatch/12986/2 "2025-08-07T11:52:53Z")

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