Your System Settings
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StratosFour supports all of our services in-house, providing you the quickest path to issue resolution. If you need support, you will be talking directly to the people who are most familiar with our services. We are dedicated to providing you with the highest level of service possible.
Google Chrome Support
The Google Chrome browser has ended support for all NPAPI plugins by default beginning with version 42. Silverlight is an NPAPI plugin that is currently required to view StratosFour webcasts in the Google Chrome browser. If you have Silverlight installed but see the prompt to "Install Microsoft Silverlight", please follow these steps to resolve the issue on a Windows PC.
- Open Chrome and type "chrome://flags/#enable-npapi" in the address bar.
Click "Enable" in the Enable NPAPI setting.
Relaunch Chrome by clicking "Relaunch Now" at the bottom of the Chrome window. Note: You must click the "Relaunch Now" button. Simply closing and re-opening the browser will not work.
After Chrome relaunches, verify Silverlight is installed by going to
If you see the following message, Silverlight is installed. Relaunch the webcast and continue as normal.
If you are prompted to install Silverlight, please click the "Click to Install" button and follow the prompts to install Silverlight.
- If you have any issues enabling the NPAPI setting in Google Chrome on your Windows PC, please contact technical support at 800-437-7135 or
What browser can I use?
Why didn't the webcast window open?
What if I can't see the video/hear the audio?
There are a few things you can check to make sure you have everything you need to participate in the webcast. First, make sure your System Settings in the box on the left side of this page do not indicate any issues. Make sure that your speakers are turned on and plugged in to the correct port on your PC, and that the volume control on your PC is not muted or turned down.
If you can hear the audio but do not see any video, first check the program information to make sure that the webcast is supposed to have video. Many webcasts can be audio only. If there is supposed to be video and you are getting the audio but not the video, then it is most likely a bandwidth issue at your location. StratosFour structures webcasts so that if there are bandwidth constraints at the user's end, the video (which needs more bandwidth) will drop, and the audio (which has lower bandwidth requirements) will continue to play. This allows lower bandwidth users to receive the audio, which is typically the most important content.
If you still are not getting any audio/video, it is typically a firewall related issue. Although this is not as common as it used to be, some company networks will block streaming audio/video at the firewall. You will need to contact your IT department if this is the case. We are happy to work with your IT department so they can be comfortable with the content that we deliver.