How to Fix Mastodon ‘Could Not Process Video’ on Upload

When you upload a video to Mastodon and see the error message “Could Not Process Video,” the upload fails and the video never appears in your post. This error typically occurs because the video file does not meet Mastodon’s strict media requirements for format, size, resolution, or duration. This article explains the exact technical reasons … Read more

Mastodon Error ‘Media Could Not Be Stored’ on S3 Setup: Fix

When setting up Mastodon with an S3-compatible storage backend, you may encounter the error ‘Media could not be stored’ when users try to upload images, videos, or other files. This problem typically occurs due to misconfigured S3 bucket permissions, incorrect endpoint URLs, or missing environment variables in your Mastodon configuration. This article explains the root … Read more

Mastodon Error ‘You Are Not Authorized’ on Admin Dashboard: Fix

When you try to open the Mastodon admin dashboard and see the error message ‘You are not authorized,’ you cannot manage users, view reports, or change server settings. This error usually means your account does not have the correct admin role assigned in the database or the role has become corrupted. This article explains the … Read more

How to Fix Mastodon Error ‘Lookup Failed’ on User Search

When you search for a user on Mastodon by their full handle, you may see the error message “Lookup Failed” instead of the profile results you expect. This happens because Mastodon searches across the federated network of instances, and the lookup request can fail due to connectivity problems, instance blocks, or incorrect handle formatting. This … Read more

Mastodon Error ‘Push Notification Failed’ on Web Push Setup: Fix

When you try to enable web push notifications in Mastodon, you may see the error Push Notification Failed. This stops the browser from sending real-time alerts for replies, boosts, and follows. The error usually happens because the browser cannot register a service worker or the push subscription endpoint is blocked. This article explains the three … Read more

How to Fix Mastodon Error ‘Could Not Load More Posts’ on Timeline

When scrolling through your Mastodon timeline, you might see the message Could not load more posts. This error stops you from viewing older toots and can interrupt your browsing. The problem often comes from a temporary network issue, a server-side rate limit, or a corrupted local cache. This article explains the root causes and provides … Read more