YouTube Won't Play? Download YouTube Flash Player or Try HTML5

YouTube used to stream videos using the Flash video format and Adobe Flash Player. It wasn't until 2010 that YouTube started a HTML5 opt-in trial so that you'll be able to watch a YouTube video with a HTML5 player.

Therefore, if YouTube fails to play, it probably has something to do with the YouTube Flash player. The solutions varies according to the platform used to playback the YouTube videos as listed out below; on a PC, an Android-based device or iOS devices. 

Scenario 1: YouTube Won't Play on PC

You're highly recommended to install the latest Adobe Flash Player by following these steps:

Method 1: Install YouTube Flash Player

1. Uninstall the older version of YouTube Flash Player and install the latest one. Download Adobe's official uninstaller here. Run the program and select your correct operating system, and then Uninstall Flash.

2. Follow Adobe's instructions for installing the latest Flash Player for YouTube.

3. Once you've downloaded the file, quit your browser first, and then install the upgraded version of Flash player.

4. Finally, open your browser again and visit YouTube. You should now be able to watch your videos successfully.

youtube flash player

Right-click on YouTube Flash player to double-check which version is currently installed on your computer.

Method 2: Try YouTube HTML5 Player

Opt in YouTube's HTML5 trial to play videos with YouTube HTML5 player rather than YouTube Flash player. Adding &html5=True to the end of YouTube video URL to use YouTube HTML5 player temporarily.

youtube html5 player

Scenario 2: YouTube Won't Play on An Android-based Device

Some users have reported that YouTube won't play on their Samsung Android phones when try to play in HQ, while some others said YouTube won't play due to conflicts with Twitter's app. Here's some solutions to fix such an issue.

1. If you can't play any video (not only YouTube) on the phone after some time, just remove the official Twitter app, issued by Twitter, Inc., and re-install it before you give it another try.

2. If it's only the YouTube videos playback problem, update the YouTube app from the Android Market to the latest version.

3. As For HTC Android phones, try the HTC Flash Player if it exists on your Android.

Scenario 3: YouTube Won't Play on iOS Devices

Keep in mind that all iOS devices such as iPad, iPhone or iPod, don't support the Flash videos on website. The pre-installed YouTube app is the only way to watch YouTube videos on iOS devices. The YouTube app works well, but if problem arises, you can try this out. First of all, make sure that your WiFi or 3G network works. Secondly, try to close all the apps that are currently running. Then re-launch YouTube app. Reboot your device if that doesn't take effect.

1. Hold your thumb down on an icon to get them all shaking, then close the open apps.

2. Hold home button plus power button simultaneously for a few seconds to close and restart iOS devices.

With these solutions, you'll be able to fix the YouTube Won't Play problem immediately. However, if you still can't play YouTube videos after trying out all the methods, you may want to download the videos to your computer or devices and play with your local video player. With KeepVid Pro, you are able to download YouTube videos with easy steps. The program will help you to download videos from the video sharing sites with easy steps, and it also helps to convert the downloaded videos if you need a specific video or auido file format. The following guide will show you how to download YouTube videos with KeepVid Pro in detail. Check it out.

Video Downloader - KeepVid Pro

KeepVid Pro - All-in-One Video Downloader & Converter

  • Download videos from YouTube, Facebook, Vimeo, and other 10,000+ pupular sites.
  • Convert downloaded videos to many formats and devices including MOV, AVI, MP4, MP3 and much more.
  • Batch download videos like YouTube playlists & channels at high speed.
  • Download YouTube HD videos (even 1080p HD and 4k videos) and YouTube 3D videos.
  • Download YouTube high bit-rate MP3 in one-click.
  • Download videos 3X faster with task scheduler.
  • Support downloading online videos in Safari, Firefox and IE.
  • Record screen or any video from online websites.
  • A built-in video player to play videos.

How to Download YouTube Videos with KeepVid Pro

Step 1 Install and Start KeepVid Pro

Download and install KeepVid Pro on your computer, then start it. The program will show you the main interface of video downloading.

YouTube Won't Play - Start KeepVid Pro

Step 2 Copy Video URL

Go to YouTube and find the video you want to download, then copy the video URL in the address bar.

YouTube Won't Play - Copy Video URL

Step 3 Choose Video Quality for Output

Now go back to KeepVid Pro and click the Paste URL button, then you'll see a pop-up dialog. Select the video quality you need.

YouTube Won't Play - Select Video Quality for Output

Step 4 Start Downloading Video

Now you can click the Download button to let KeepVid Pro start downloading the YouTube video, and you are able to view the downloading process in Downloading tab.

YouTube Won't Play - Start Downloading YouTube Video

Step 5 Finish Downloading

When the downloading process finishes, you'll get the downloaded video in Downloaded tab. Now you can right-click the video and choose Open file location to get the video in your computer. After that, you are able to play the video with your local video player.

YouTube Won't Play - Finish Downloading YouTube Video

That's it. So when you are unable to watch YouTube videos online, you'll be able to save the YouTube videos offline with KeepVid Pro and watch them without any effort. The program can be free downloaded for trial, so if you are interested in this program, just have a try.

Video Downloader - KeepVid Pro

KeepVid Pro - All-in-One Video Downloader & Converter

  • Download videos from YouTube, Facebook, Vimeo, and other 10,000+ pupular sites.
  • Convert downloaded videos to many formats and devices including MOV, AVI, MP4, MP3 and much more.
  • Batch download videos like YouTube playlists & channels at high speed.
  • Download YouTube HD videos (even 1080p HD and 4k videos) and YouTube 3D videos.
  • Download YouTube high bit-rate MP3 in one-click.
  • Download videos 3X faster with task scheduler.
  • Support downloading online videos in Safari, Firefox and IE.
  • Record screen or any video from online websites.
  • A built-in video player to play videos.

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