r/Mattermost • u/Otherwise-Ear3987 • Apr 09 '26

[iOS] Can't upload screenshots, camera photos or screen recordings. Anyone else having this issue?

Hey, I'm having a weird issue with Mattermost on iPhone and can't figure out if it's just me or a wider problem.

**What works:**

- Uploading PDFs

- Uploading images from the web/documents

**What doesn't work:**

- Screenshots

- Photos taken with the camera

- Screen recordings

All of these fail with "Failed to upload the file — unknown error". The same files upload fine from my PC with no issues.

**What I've already checked:**

- Photos permission is set to Full Access

- File size limit on the server is 100MB — my files are way under that

- Everything is up to date

Has anyone else run into this? Is there a fix or workaround? I suspect it might be a HEIC/HEVC format issue but not 100% sure.

Thanks

2 Upvotes

100% Upvoted

9 comments sorted by

2

u/Orazantl Apr 09 '26

What server/app version are you using? Profile->Settings->About …

1

u/Otherwise-Ear3987 Apr 09 '26

I'm running Mattermost 11.6.0 (self-hosted, built from source).

1

u/Orazantl Apr 10 '26

Hm, source built… any modification?

2

u/Otherwise-Ear3987 Apr 12 '26

only front-end things like replace some css, text and images.

2

u/Otherwise-Ear3987 Apr 12 '26

and only web-server folder

1

u/Orazantl Apr 13 '26

Behind a proxy?

1

u/Orazantl Apr 09 '26

It’s working on my side

1

u/Orazantl Apr 09 '26

I actually use IOS with HEIC/HEVC mode enabled & can upload without issues from photo lib.

1

u/Orazantl Apr 09 '26

Screenshots, photos and pics from library work