Quick wins for a faster PC:
Scan for outdated or missing drivers - takes under a minuteDriver Scan →Clear out junk files and repair common Windows errorsFree Scan →Roku’s “Not enough memory,” “Can’t run app,” and “Insufficient memory” messages can point to low device storage or an internet connection problem. Try a restart first, then check storage and your connection based on how your Roku is connected. Roku’s troubleshooting guide, last updated September 6, 2026, covers both possibilities.
1. Unplug the Roku and restart it
Disconnect the Roku device’s power cord, wait at least 10 seconds, and reconnect it. Roku describes this as its least invasive reset method; it does not affect your settings.
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2. Restart from Settings
If the error remains, use the system restart option:
- Press Home on the remote.
- Go to Settings > System > Power > System restart.
- Select System restart.
If there is no Power submenu, skip this method and try another step. On a Roku TV, pressing the remote’s power button or the TV’s physical power button is not the same as a system restart.
#1 Best Overall
- HD streaming made simple: With America’s number 1 TV streaming platform,* exploring popular apps—plus tons of free movies, shows, and live TV—is as easy as it is fun. *Based on hours streamed—Hypothesis Group
- Compact without compromises: The sleek design of Roku Streaming Stick won’t block neighboring HDMI ports, and it even powers from your TV alone, plugging into the back and staying out of sight. No wall outlet, no extra cords, no clutter.
- No more juggling remotes: Power up your TV, adjust the volume, and control your Roku device with one remote. Use your voice to quickly search, play entertainment, and more.
- Shows on the go: Take your TV to-go when traveling—without needing to log into someone else’s device.
- TV, simplified: With setup that only takes minutes, a simple-to-navigate Home Screen, and an uncluttered remote control that does all you need—Roku makes it easier to watch the TV you love.
3. Remove apps you do not use
If the problem is storage, removing unused apps may free space needed to store and install apps:
- On the Home screen, highlight an app you want to remove.
- Press the Star button on the remote to open Options.
- Choose Remove app, then confirm.
Remove only apps you are comfortable uninstalling; you can add apps again later if needed.
Rank #2
- 4K streaming made simple:With America’s number 1 TV streaming platform,* exploring popular apps—plus tons of free movies, shows, and live TV—is as easy as it is fun. *Based on hours streamed—Hypothesis Group
- 4K picture quality: With Roku Streaming Stick Plus, watch your favorites with brilliant 4K picture and vivid HDR color.
- Compact without compromises: Our sleek design won’t block neighboring HDMI ports, and it even powers from your TV alone, plugging into the back and staying out of sight. No wall outlet, no extra cords, no clutter.
- No more juggling remotes: Power up your TV, adjust the volume, and control your Roku device with one remote. Use your voice to quickly search, play entertainment, and more.
- Shows on the go: Take your TV to-go when traveling—without needing to log into someone else’s device.
4. Check your Wi-Fi connection
Roku lists a weak wireless signal as one possible contributor to the error. If your Roku uses Wi-Fi, follow Roku’s wireless-connection troubleshooting instructions. The error message alone does not establish that Wi-Fi is the cause.
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5. Check whether your internet service is working
Roku also identifies an internet-provider connection issue as a possible cause. Check whether other devices can access the internet on the same connection. If they cannot, address the connection or contact your provider; if they can, continue troubleshooting the Roku’s connection.
Rank #3
- Stunning 4K and Dolby Vision streaming made simple: With America’s number 1 TV streaming platform,* exploring popular apps—plus tons of free movies, shows, and live TV—is as easy as it is fun. *Based on hours streamed—Hypothesis Group
- Breathtaking picture quality: Stunningly sharp 4K picture brings out rich detail in your entertainment with four times the resolution of HD. Watch as colors pop off your screen and enjoy lifelike clarity with Dolby Vision and HDR10+.
- Seamless streaming for any room: With Roku Streaming Stick 4K, watch your favorite entertainment on any TV in the house, even in rooms farther from your router thanks to the long-range Wi-Fi receiver.
- Shows on the go: Take your TV to-go when traveling—without needing to log into someone else’s device.
- Compact without compromises: Our sleek design won’t block neighboring HDMI ports, so you can switch from streaming to gaming with ease. Plus, it’s designed to stay hidden behind your TV, keeping wires neatly out of sight
6. If your Roku uses Ethernet, troubleshoot the wired connection
For a Roku streaming device connected by Ethernet, follow Roku’s instructions for connecting a streaming device using Ethernet. Use the wired-connection guidance rather than Wi-Fi troubleshooting when the Roku is connected by cable.
Could a microSD card help?
Roku says a microSD card can expand memory for installing apps if your Roku streaming device has a microSD slot. This is a storage option, not a fix for a network problem. Roku’s error guide does not list compatible models or card specifications, so check the exact device model and compatibility before buying a card.
Rank #4
- Hides behind your TV: The all-new design plugs right into your TV with a simple setup
- Super-fast startup: Start streaming channels like Disney+, Prime Video, HBO Max, Apple TV+, Netflix, Sling, and Hulu in a snap—just turn on your TV
- Long-range Wi-Fi: Enjoy fast, smooth TV streaming in any room with a strong Wi-Fi connection, now up to 2x faster
- No more juggling remotes: Power up your TV, adjust the volume, and control your Roku Streaming Stick with the Roku remote
- Voice search & control: Quickly search, play entertainment, and control your streaming device with the voice remote
Which step should you try first?
- Start with a restart if you want to try a device-side step that does not change settings.
- Remove an unused app if you suspect the device needs more storage to store or install apps.
- Follow the connection branch that matches your setup: Wi-Fi or Ethernet. Check whether your internet service is working, too.
- Consider a microSD card only if your streaming device has a compatible slot and the issue is storage.
Roku does not publish success rates for these actions, so there is no evidence-based way to rank them by likelihood of fixing the error. The message may have more than one possible cause; use the steps to distinguish a device-storage problem from a connection problem.
Quick Recap
Best Value
- Upgrade your TV, instantly – Fire TV Stick HD is our fastest HD streaming stick ever, with a streamlined navigation that jumps straight to your movies, shows, and live TV. Take your entertainment on the go with the new ultra-portable profile. And watch it all come to life with crisp Full HD and Wi-Fi 6 support.
- The newest Fire TV experience (2026) – Our biggest update to Fire TV has a new, modern design that gets you to your entertainment fast. Browse dedicated content categories, pin more of your favorite apps, and get personalized recommendations from Alexa+. Spend less time scrolling, and more time watching.
- All your apps in one place – Prime Video, Netflix, YouTube, Disney+, Apple TV, HBO Max, Hulu, Peacock, Paramount+, and thousands more. It’s easy to find what to watch from hundreds of thousands of movies and TV episodes, including free, ad-supported content. Subscription fees may apply.
- Our most portable stick – Thin and light, without extra clutter. Connects directly to your TV's HDMI port without blocking other ports.
- Easier than ever to set up – Now with Direct Power, it's powered by your TV with the included USB-C cable and eliminates the need for a wall adapter.
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