Update: YouTube Functionality on NT 4.0

Dell / LATITUDE C640
March 23, 2011 at 11:44:27
Specs: Windows NT Workstation Build 1381 Service Pack 5, 1.796 GHz / 1024 MB
This is an update to my previous post from June:


YouTube recently raised modified their website and the minimum requirements for Flash rose from version 7 to version 10.

Due to these changes, I have discovered it is now necessary to install a minimum of Service Pack 5 on NT 4.0. The previous configuration that I had used and worked was Service Pack 3. Flash 8 DOES still work despite YouTube's claims that 10+ is required. You can download it from Macromedia's web site here: Adobe Flash Player 8,0,15,0 Also, all of the Flash objects that I have encountered on web sites including computing.net function properly with Flash 8.

I'm guessing this is due to the fact that YouTube might now be exploiting features that are only functional with the latest NT 4.0 service packs that are non-existent in the earlier packs?

Considering that NT 4.0 remains part of the NT line that is 2000/XP/Vista/7, I think it is likely that NT 4.0 will mostly remain compatible with whatever those operating systems are compatible with. After all, USB does in fact work on NT 4.0, despite Microsoft's claims otherwise. See here: http://nt4ref.zcm.com.au/usb.htm I use i4usb406.exe which works flawlessly with my flash drives and USB mice.

I'm running the configuration of Service Pack 5 and Mozilla Firefox and YouTube works flawlessly, providing that you have the proper hardware and RAM-- it won't work with 1996-era hardware unless you are using a server with powerful CPUs and RAM.

If you want the ultimate in patches (do you really need it after 10 years of non-support LOL?) you should download Service Pack 6. This is no longer available from Microsoft but can be downloaded from my server: http://sdfox7.com/winntsp.htm.

Service Pack 5
Service Pack 6 (standard encryption)
Service Pack 6 (high-encryption)

While you are at it, you can download the Post-Windows NT 4.0 Service Pack 6a Security Rollup Package (SRP) (strangely still available on Microsoft's web site.


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March 28, 2011 at 11:34:33
Correction; after further testing on other machines, disregard the above. There are only 4 steps required.

Here's exactly what you need:

1) Install NT 4.0 (Workstation or Server)

2) Install Service Pack 3 (same file for Workstation and Server); reboot- Service Pack 4-6 are NOT required for a minimum service pack

3) Install Internet Explorer 4 (September 30, 1997)
(requires Service Pack 3 first above) (I know it sounds ironic but there are font files and browser functions that are included with IE that are not included with Firefox - Firefox is dependent on these libraries and YouTube will not run in Firefox with only IE 2.0/3.0 installed- I've already tried)

4) Install the following libraries 50COMUPD and SPEU (Firefox will install without them but will fail to run)

Download and install Firefox 2 (or other version of your choice) and the Flash Player 8 plugin. Flash is required for YouTube to play!

You are done! Reboot, launch Firefox and YouTube, and you're good to go. YouTube videos will not play in the "lightweight page". When it loads the page with the video and tells you "You are using an outdated browser, which YouTube no longer supports. Since some features on YouTube may not work, you are viewing a lightweight version of the video page.", click the link on the right side of the page in the green box that says "Go back to the regular page". You will go back to the standard page and YouTube will play.


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May 22, 2012 at 12:22:17

Flash 8 has been deprecated on YouTube and no longer functions correctly.

My recommendation: first, download and install Opera 9.64, then download and install Adobe Flash Player 9,0,47 (9.0.47). It must be done in this order so the plug-in can be copied to the Opera directory. (Full Opera Windows archive is here: This is the Opera FTP archive for older versions of Opera.) Unless the architecture of Adobe Flash Player changes in the future, 9,0,47 (9.0.47) is the final version that can be installed on NT 4.0.

While Internet Explorer 6 and its Adobe Flash Player 9,0,47 (9.0.47) ActiveX control can both be installed, neither works correctly.

For best results you should install Windows NT 4.0 Service Pack 6, itself already 13 years old. Standard encryption: SP6I386.EXE or high-encryption: MSNT128.EXE. I don't recommend the Post-SP6 rollup because it breaks some older software including early versions of IntelliPoint.


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September 19, 2014 at 22:23:05
Today is 9/20/2014.

Just to confirm, I just successfully ran NT 4.0 on YouTube today. This is on a Gateway Solo 9300. It runs incredibly well when you consider this laptop has just 96MB RAM (32MB onboard plus 64MB).

I streamed YouTube at only 11mbps on a 802.11b Orinoco Gold WaveLAN Wireless Wifi card.

The YouTube controls are exactly where you'd expect them to be, the "invisible" buttons still work if you know where to click!

Feel free to see my screenshots here: http://sdfox7.com/nt40/files/nt4flsh1.jpg

There are no special changes I made to the operating system. Just:

Windows NT 4.0 with Service Pack 6 (http://sdfox7.com/nt40/hiencry/sp6/MSNT128.EXE
Flash Player 9 0 47 (http://sdfox7.com/nt40/flashplayer9r47_win.exe
Firefox (http://sdfox7.com/nt40/FFX15012.EXE)

It's amazing this combo still works since Firefox and Flash Player 9 0 47 are from May 2007 and June 2007, respectively. Apparently YouTube and Flash get along with DirectX 3.0 just fine.


message edited by sdfox 7

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