Windows 10 does not come with any pre-installed desktop streaming software that is compatible with social Live Streaming services.
In order to continue, you will need to have some sort of screencasting software installed and functioning on your computer. There are dozens of different packages available, each with different options, user interfaces, and features. Each is made by different companies or groups, and many are paid-for software, while some are free.
If you are more familiar, and prefer to use a different screencasting software suite, you may choose to use that package instead.
OBS
OBS is a free, open source software package designed to be very powerful, but relatively easy to use, to stream your desktop to a service such as YouTube.
This guide is designed to give you a basic overview to the process of streaming. You will most likely want to further customize exactly how you use your streaming software, as well as the exact options chosen on YouTube.
3. Retrieve Stream Key
Open your preferred browser and type youtube.com/live_dashboard in the address bar, then push Enter or Return.
First-Time Streamers
YouTube imposes a 24-hour delay on streaming after requesting Live Streaming capabilities for first-time streamers. There is no way around this. Please prepare ahead!
Every Google and YouTube account is slightly different; you may or may not see some of the prompts here, depending on exactly how your account is setup. If a step appears to be "missing", simply move forward with what is on your screen, instead.
Sign in to YouTube with your Google account.
Enter your name, or the name you want to stream with, and select Create Channel.
Select Get Started.
In order to stream you YouTube, your Google account must be fully verified. Select your Country, if you'd prefer to receive the two-step verification code with a phone call or a text message, enter your Phone Number, then select Submit.
Enter the six-digit number you received via text or call, then select Submit.
Your account is now verified, select Continue.
You'll be returned to your YouTube Channel's Status and Features. Scroll down, and select Enable for Live Streaming.
You'll be reminded there is a 24-hour hold on new streamers from when you request to enable the feature. Select Learn More (or visit support.google.com/youtube/answer/2474026 at any time) to review Google's Introduction to Live Streaming, access the YouTube Community Guidelines, and Terms of Service that you must adhere to.
Please take a moment and be sure you read and understand both the Community Guidelines, as well as the Terms of Service before live streaming with YouTube.
Carefully note your Server URL and Stream name/key. You will need this to configure your streaming program.
Your stream key is yours and yours alone. Do not share it with anyone, nor show it live on a stream. Anyone who has this code can go live on your YouTube channel, and you will be responsible for any content they share.
4. Auto-Configuration Wizard (YouTube)
Open OBS Studio.
The first time you launch OBS Studio, you'll be asked if you want the program to automatically configure. Select Yes.
If you wish to re-launch the auto-configuration wizard, select Tools > Auto-Configuration Wizard.
You'll be asked how you wish to use OBS primarily. Select Optimize for streaming, then select Next.
For Base (Canvas) Resolution select Use Current. For FPS, select Either 60 or 30. Then, select Next.
For Service, select YouTube / YouTube Gaming. Enter your Stream Key you just got from your YouTube Live Dashboard. Then, select Next.
The Stream Key will appear as dots. This is to help keep you safe from people seeing it as you enter your key. Always keep your Stream Key secret.
OBS will perform a test of your system to determine the best quality with minimal impact on your stream as possible. Once complete, select Apply Settings.
5. Add Stream Info
Open your preferred browser and type youtube.com/live_dashboard in the address bar, then push Enter or Return.
Scroll down, and fill in the Basic Info about your stream. Give it a Title and Description, select a category, and choose if your stream will be Public, Unlisted, or Private.
Public
Anyone will be able to join and watch your stream, and it will be searchable from YouTube's search bar. This is best for gathering a large audience and being social with anyone who has access to YouTube.
Unlisted
Your stream will not be listed or searchable, but those you give the address will be able to see your stream. This is best if you wish to share your stream with a select few, such as backers or a small community, but not with everyone, though anyone can join if someone shares the address with them.
Private
Only those you specifically invite will be able to see the stream. This is best if you're streaming to a very select group, such as family or a close-knit group, and don't want everyone to be able to join. The people you choose to allow in must have a Google account, and you must select them personally.
You may wish to review further options in Stream Options, Cards, and Encoder Setup to further refine your stream.
6. Go Live
Return to OBS. Under Controls, select Start Streaming.
A few moments later, the status bar at the bottom of OBS will start providing information about the health of your stream.
Dropped Frames
If your computer can't keep up with encoding, your Internet connection isn't quite fast enough, there's congestion on the Internet between you and the streaming server, or the Ingest server is very busy, you may see that your stream drops frames. Some dropped frames are fine, but if there's a large percentage of dropped frames, it may indicate you need to decrease quality or change other settings.
LIVE
How long you've been live and streaming for.
REC
If you've chosen to record, how long you've been recording your screen for.
CPU
How much CPU or how much of your computer's processor is in use at a given moment. This also gives an estimate of how many frames per second, or FPS, you're streaming at.
Color Square
The colored square gives a simple, at-a-glance view of the health of your stream, green, yellow, or red.
kb/s
How much upload bandwidth you're using for your stream at a given moment.
At this point, anything and everything shown on your screen is being broadcast, live, to anyone who chooses to tune in. Do not show any sensitive information, such as banking, passwords, stream keys, etc. or they will be taken.
Stopping Stream
When you are done streaming, select Stop Streaming in OBS to end your stream.