- TVs
- Smart TV
Can't run app
Roku Can't run app on Roku player: low memory or network
Risk level
Low
Usually safe to check without specialist tools.
Urgency
Low
Quick answer
“Can't run app”, “Insufficient memory” or “Not enough memory” when opening an app on Roku points to low storage for apps or an internet connection problem. Do a system restart, remove apps you do not use and check your network.
Safety first
Stop and check this first
- Before removing apps, note which ones you use and keep your sign-in details handy, since reinstalling them may ask you to log in again.
- Always start with the system restart, which Roku calls the least invasive step and which keeps your settings, before considering more drastic resets.
Safe checks you can perform
- Do a system restart on the Roku
- Remove apps you do not use to free space
- Test the network with another device and restart the router
Leave these tasks to a qualified professional
- Do not attempt this professional task: Home connection test by your broadband provider
- Do not attempt this professional task: Roku support case
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Home connection test by your broadband provider
What they doIf other devices at home cannot connect either, the provider checks the line and router while the Roku shows the message.
They must show youthe line test with the measured speed and stability.
In writingthe incident number and the fault found or ruled out.
Roku support case
What they doIf the message continues after the restart, app removal and a verified network, Roku support reviews the player and the specific app.
They must show youthat the case includes the affected app, the message and the steps already taken.
In writingthe case number, the player model and the proposed fix.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Do a system restart on the Roku
- Who:
- you, with the remote or the Roku mobile app.
- How:
- remove the power cord for at least 10 seconds and plug it back in, or go to Home > Settings > System > Power > System restart. If there is no Power submenu, look for System restart directly under System.
- Result that matters:
- the app opening without the memory message.
- If the app opens:
- the glitch was passing; you do not need to delete anything.
- If the message returns:
- free up space by removing apps.
- Evidence to keep:
- the name of the failing app and the exact message shown.
Evidence: How to fix "Can't run app" and "Insufficient memory" error messages
Remove apps you do not use to free space
- Who:
- you.
- How:
- press Home, move right to highlight the app to remove, press the Star button on the remote to open the Options menu and select Remove app, confirming when asked. If your model has a micro SD slot, you can expand the memory for apps.
- Result that matters:
- enough free space for the app to install and open.
- If after removing one or two apps the failing one starts:
- storage was the problem.
- If nothing changes with space freed:
- move on to the home network test.
- Evidence to keep:
- a list of removed apps in case you want to reinstall them.
Evidence: How to fix "Can't run app" and "Insufficient memory" error messages
Test the network with another device and restart the router
- Who:
- you.
- How:
- connect a phone or laptop to the same Wi-Fi network. Restart the router and modem (or gateway): unplug them, wait 10 seconds and plug them back in. On a wired connection, follow Roku's Ethernet connection guide.
- Result that matters:
- knowing whether the network works before blaming the Roku.
- If the phone or laptop has no internet either:
- contact your internet provider, as Roku advises.
- If the network works on other devices but the Roku fails:
- move it closer to the router or improve the Wi-Fi signal.
- Evidence to keep:
- the time of the test and whether the other devices were online.
Evidence: Why won't my Roku streaming device connect to Wi-Fi? · How to fix "Can't run app" and "Insufficient memory" error messages
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- TVs
- Brand
- Roku
- Product type
- Smart TV
Known code variants
- Can't run app
- Insufficient memory
- Memoria insuficiente
- No hay suficiente memoria
- No se puede ejecutar la app
- Not enough memory
- Roku can't run app
- Roku insufficient memory
- Roku not enough memory
What it means
In its guide to these messages, Roku links them to two causes: not enough storage space to install and keep apps, or a network problem, from a weak signal or the internet provider, that stops the app from opening. It suggests a system restart first, which it calls the least invasive reset and which leaves your settings alone; on a Roku TV it is not the same as pressing the power button. Some models have a micro SD slot to add app memory. Other models may differ, and the message alone does not prove that the device memory is faulty.
Warnings and stop conditions
- Loweditorial warning
Before removing apps, note which ones you use and keep your sign-in details handy, since reinstalling them may ask you to log in again.
Evidence: How to fix "Can't run app" and "Insufficient memory" error messages
- Loweditorial warning
Always start with the system restart, which Roku calls the least invasive step and which keeps your settings, before considering more drastic resets.
Evidence: How to fix "Can't run app" and "Insufficient memory" error messages
Symptoms and causes
Probable causes · in order
- Storage full of installed appsCommon
Roku explains that low memory messages appear when the device lacks the space required to store and install more apps.
Evidence: How to fix "Can't run app" and "Insufficient memory" error messages
- Weak Wi-Fi signal when the app opensPossible
According to Roku, a weak wireless signal can stop the player from opening the app properly and trigger the same memory message.
Evidence: Why won't my Roku streaming device connect to Wi-Fi? · How to fix "Can't run app" and "Insufficient memory" error messages
- Internet provider issuePossible
Roku also names a problem with the internet provider; if another device on the same network cannot get online either, the cause lies outside the Roku.
Evidence: Why won't my Roku streaming device connect to Wi-Fi? · How to fix "Can't run app" and "Insufficient memory" error messages
- Temporary system statePossible
A system restart is Roku's first step and usually brings the device back to normal, a sign that the message is sometimes a passing glitch.
Evidence: How to fix "Can't run app" and "Insufficient memory" error messages
Virtual technician
Does Can't run app still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
Why won't my Roku streaming device connect to Wi-Fi?
Roku · 2026 · official_doc
- 2
¿Por qué no se conecta mi dispositivo de streaming Roku al wifi?
Roku · 2026 · official_doc
- 3
How to fix "Can't run app" and "Insufficient memory" error messages
Roku · 2026 · official_doc
- 4
Cómo solucionar los mensajes de error “No se puede ejecutar la app” y “Memoria insuficiente”
Roku · 2026 · official_doc
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