Most Common App Errors (2026): What Breaks & How to Fix It

Data updated October 2026

Key findings

We documented 782 recurring errors across 69 apps and tools — each one reported by multiple users, with the causes and fixes that work.
The most common type is a feature not working (124 errors, 16%), followed by not loading, error messages & connection and missing or lost data.
46% of errors affect the mobile apps (iOS or Android).
21% are still unresolved by the vendor — users rely on workarounds.

App errors by type

Error type	Errors	Apps
A feature not working	124	50
Not loading, error messages & connection	110	47
Missing or lost data	93	51
Plan limits, paywalls & watermarks	59	37
Sync failures	59	34
Export, render & quality loss	54	32
Crashes, freezes & blank screens	54	33
Integrations, automations & extensions	43	22
Billing, cancellation & refunds	36	29
Slow, laggy or resource-hungry	36	33
Login, account & activation	31	30
AI & editing tools not working	27	21
Audio, video & device problems	22	12
Notifications, reminders & messages not sending	18	12
Storage, upload & download	16	13

Apps with the most documented errors

Box not working — 15 errors
KineMaster not working — 14 errors
LumaFusion not working — 14 errors
Notion not working — 14 errors
PowerDirector not working — 14 errors
Webex not working — 14 errors
iA Writer not working — 14 errors
ExpressVPN not working — 13 errors
Monday.com not working — 13 errors
Picsart not working — 13 errors

More guides doesn't mean a worse app — popular apps simply have more users reporting problems.

Before you troubleshoot any app

Check the vendor's status page — many “not working” reports are outages.
Update the app, then fully quit and reopen it (not just close the window).
Sign out and back in — it fixes a surprising share of sync and “Pro not unlocked” errors.
Free up storage: exports, sync and uploads fail silently when the device is nearly full.
On mobile, cancel and request refunds through the App Store or Google Play, not inside the app.

A feature not working

A specific feature or integration that stops working — automations, AI tools, notifications. 124 errors across 50 apps.

Not loading, error messages & connection

Stuck loading, “something went wrong”, network errors, rate limits, can't connect. 110 errors across 47 apps.

Missing or lost data

Projects, files, notes or messages that disappeared, or changes that didn't save. 93 errors across 51 apps.

Plan limits, paywalls & watermarks

Free-plan caps, device or storage limits, credits used up, Pro features still locked after paying. 59 errors across 37 apps.

Sync failures

Changes not syncing between devices, calendars or cloud folders; conflicted copies. 59 errors across 34 apps.

Export, render & quality loss

Exports that fail, freeze at 99%, lose quality, or never finish processing. 54 errors across 32 apps.

Crashes, freezes & blank screens

App closes on its own, won't open, hangs, or shows a black/white screen. 54 errors across 33 apps.

Integrations, automations & extensions

Calendar, Slack, Zoom, Stripe or Google integrations, browser extensions and automation rules that stop working. 43 errors across 22 apps.

Billing, cancellation & refunds

Charged after a trial, can't find where to cancel, refund denied, surprise price changes. 36 errors across 29 apps.

Slow, laggy or resource-hungry

Lag, slow uploads, high CPU or memory use. 36 errors across 33 apps.

Login, account & activation

Can't sign in, login loops, two-step verification, licence not activating. 31 errors across 30 apps.

AI & editing tools not working

AI features, background removers, generators, captions and editing tools that fail or give bad results. 27 errors across 21 apps.

Audio, video & device problems

Microphone, camera, screen sharing, echo, audio out of sync. 22 errors across 12 apps.

Notifications, reminders & messages not sending

Push notifications, reminder emails or texts, and messages that never arrive. 18 errors across 12 apps.

Storage, upload & download

Storage full, apps taking up space, uploads that fail, files the app won't import. 16 errors across 13 apps.

Methodology & citing this report

Each error is a problem reported independently by multiple users in help centers, community forums, Reddit and app stores, researched into a troubleshooting guide. Types are grouped from the error description. All guides are listed in Fixes; see our methodology. Free to cite with a link: “Try or Bye, Most Common App Errors 2026, https://www.tryorbye.com/reports/most-common-app-errors”.