Installing Flash Player Plugin on Firefox without having Administrator Access or Premissions

Last updated on Mon, 2012-07-16 09:14. Originally submitted by fabio on 2007-02-19 16:32.

UPDATE: The following guide, originally written for Firefox 2, has been used successfully on Firefox 3, 3.5, 3.6, 4, 5, 6, 7, 8, 9, 10, 11 and 12. Users of Firefox Portable edition (same versions) also have been successful using this guide.

The Windows computers available at my University permits login only by autenticated users (students) who don't have Administrator access and permissions.

Installing software on those PC is then not possible.

Recently they finally installed Firefox 2 but without the Flash plugins, which is absolutly useful/needed.

I then tryed to install the Flash Player using the "standard" way (click on the missing plugin link then install the plugin..). However without administrator plugins it was not possible to install.

Then I started doing some tests trying to install the plugin manually. Now I have it installed and working perfectly!

This is how I managed to install it without administrator permissions:

  1. Download this ZIP archive to your hard disk.
  2. Extract the file in the archive. You can use any program capable of opening .zip files (WinZip, WinRAR or the free and great 7-zip). There are also websites which can uncompress archives:
  3. Copy the file NPSWF32.dll to %APPDATA%\Mozilla\Plugins\
    • %APPDATA% is not a real folder. It's an alias. By inserting it in your windows explorer address bar, you'll be redirected to the real folder which holds your applications profiles and settings. The location of this folder depends on various setting that's why we need the alias and not an absolute path.
    • You can open this folder simply choosing "Start → Run → Type in %APPDATA% → OK".
    • In case you don't have a Plugins folder you can create one and place your files there.
  4. Restart Firefox
  5. Enjoy your flash websites!

Profile folder on MozillaZine Knowledge Base.
Installing Flash in Portable Firefox with no installer at Blog.

Posted in:

WOW....Great...! It works..!!

Submitted by Arun (not verified) on Tue, 2010-11-30 12:28.

WOW....Great...! It works..!! Thanks a lot!!

Good Help

Submitted by snvyas (not verified) on Tue, 2010-11-30 03:38.

I am very glad when it works properly.

Works perfectly with this link

Submitted by Tony (not verified) on Mon, 2010-11-29 12:30.

Here is how the Flash Update to 10.1 worked for me:
- file downloaded from: (it contains the NPSWF32.DLL)
- closed Firefox (otherwise it doesn't work)
- unzipped and overwritten the file in the %APPDATA%/Mozilla/Plugins


10x guys. An update to the article would be great, so you don't have to go through all the comments for each version of Adobe Flash.


Submitted by Luigi (not verified) on Sat, 2010-11-27 20:40.

Thank you very much! I feel like a real hacker :))

installing plugin even if not Administrator

Submitted by Roberto (not verified) on Tue, 2010-11-23 16:34.

It works really good. Great

Submitted by Knight (not verified) on Sat, 2010-11-20 20:24.

EDIT: link removed. Sorry, but links to binaries from strange sources are not tolerated on this website as they could contain viruses.

use this link and download this file and just run it and go next and next. You don't have to be Administrator to run this file. Make sure that you you have this location
"C:\Documents and Settings\user\Application Data\Mozilla\plugins"
and if you don;t have just simply create it.

Good luck people

Hey, thank u very

Submitted by Anonymous (not verified) on Tue, 2010-11-23 12:22.

Hey, thank u very much.......
it really works.
brilliant work....


Submitted by Aero (not verified) on Tue, 2010-11-16 12:02.

you r so smart and this method is working fine! thanks buddy!

great work DUDE!!

Submitted by sandeep Yamani (not verified) on Thu, 2010-11-11 10:02.

Its working great.....helped me a lot...Thanks

Thank you SO MUCH!!

Submitted by Polter-Cow (not verified) on Sun, 2010-11-07 19:46.

I knew the Internet had to have figured out a way to do this. Thank you so much!!


Submitted by unicorngoddess (not verified) on Wed, 2010-11-03 15:34.

Our systems at work were recently locked down...I can't even update programs without an admin...and unless it's business related they won't come update it. This work around worked perfectly! Thanks!

I like it....

Submitted by osama (not verified) on Wed, 2010-11-03 09:47.

i didn't test it .... but it's sound working
i like it

It functions, but

Submitted by Anonymous (not verified) on Wed, 2010-11-03 00:33.

It functions, but unfortunately the Flash player is outdated (version On Adobe website last version is 10.1.

Thanks anyway.

Simply and Easy

Submitted by Mik3Sanz (not verified) on Thu, 2010-10-28 16:22.

Wokr very well, fantastic! Thank You

You're a life saver, THANK

Submitted by Robert Salaam (not verified) on Wed, 2010-10-27 14:59.

You're a life saver, THANK YOU!!!!

My Firefox going to hang

Submitted by powerNET (not verified) on Tue, 2010-10-26 12:53.

Why after i copy the 2 files then i restart my firefox a couple of seconds my firefox not working and hang.

please need your help.

Are you running 64bit version

Submitted by fabio on Tue, 2010-10-26 13:48.

Are you running 64bit version of Windows 7 or Vista?

Please help, how am I going

Submitted by kamote (not verified) on Fri, 2010-10-22 18:43.

Please help, how am I going to do that in Vista (OS) and I'm using Firefox Portable (version 3)? Thank you in advanced!

Read the comments below..

Submitted by fabio on Fri, 2010-10-22 23:41.

Read the comments below.. other people did that and there are instructions for that!

So Useful !

Submitted by Midtown Atlanta (not verified) on Fri, 2010-10-22 02:30.

Thank my lucky stars I have never run in to this particular problem. Just in case, though, I'm going to e-mail your URL to myself so I can have GMail archive it in the cloud. Just please don't ever pull the plug on your web site, eh?

Thank you! Works good on FF

Submitted by tata_lor (not verified) on Thu, 2010-10-21 08:14.

Thank you! Works good on FF 3.6

thank you

Submitted by tuone (not verified) on Thu, 2010-10-14 12:46.

thumbs up. really helped me out


Submitted by Anonymous (not verified) on Wed, 2010-10-13 21:31.



Submitted by Anonymous (not verified) on Tue, 2010-10-12 06:59.

it if u have ne other worth like dis

This is perfect!! Thanks a

Submitted by Anonymous (not verified) on Sat, 2010-10-02 05:40.

This is perfect!! Thanks a lot!


Submitted by Anonymous (not verified) on Fri, 2010-10-01 09:22.

thanks... awesome

Its works

Submitted by trafik (not verified) on Tue, 2010-09-28 23:27.

Hi, It works like charm. Could you help provide a solution to install the debug version of flash player 10 in firefox as well?thx again. kameralar burada Mobese canlı olarak izlenebilir.

Admin edit: Removed spam looking links. Linking is tolerated only for personal websites.

Be careful if you are using McAfee AV

Submitted by Ramesh (not verified) on Tue, 2010-09-28 13:29.

I tried the mentioned suggestions and still could not get it to work until I disabled "Access Protection" in the "McAfee VirusScan Console".
I quickly copied the files and restarted Firefox and voila! it worked.
My company has McAfee re-enabling some features after a few minutes if a user disables them, therefore I had to copy the files quickly.
Many thanks for the solution.


It worked on firefox

Submitted by Anonymous (not verified) on Tue, 2010-09-28 10:30.

It worked on firefox portable, copy the files mentioned to \FirefoxPortable\Data\plugins

Not Working

Submitted by Anonymous (not verified) on Tue, 2010-10-26 15:11.

I Keep getting an error message

how to stop that

Thanks a lot I am using

Submitted by Anonymous (not verified) on Thu, 2010-10-14 11:31.

Thanks a lot I am using portable firefox and your comment helped me.

Thanks a TON

Thx mate! You rock!

Submitted by Sapa (not verified) on Tue, 2010-09-28 08:24.

Thx mate! You rock!

thanks. worked great!

Submitted by Anonymous (not verified) on Sat, 2010-09-25 21:33.

thanks. worked great!

It Worked

Submitted by Anonymous (not verified) on Fri, 2010-09-24 20:08.

Superb Fix. Good Job !! Thank you.

Not much of a 'geek' myself,

Submitted by Anonymous (not verified) on Mon, 2010-09-20 16:26.

Not much of a 'geek' myself, I did get it to work tho...

Thanks a mill. m8.


Submitted by Anonymous (not verified) on Mon, 2010-09-20 10:22.

Great!! It works fine.

Access Denied :(

Submitted by ArasH (not verified) on Wed, 2010-09-15 08:15.

Access Denied
You don't have permission to access "" on this server.

Reference #18.777df5c3.1284534799.2159376c


Filtered ...

Submitted by Majid (not verified) on Sun, 2010-10-17 17:35.

Dear Arash,

Due to your location IRAN , Unfortunately it is filtered from adobe group .
Use antifilter like UltraSurf .

Goodluck .

It works on a USB Device

Submitted by Angelau5 (not verified) on Wed, 2010-09-22 14:54.

If you have a USB key, you can download the portable version of Firefox and it works perfectly ;)

its great

Submitted by Anonymous (not verified) on Tue, 2010-09-14 07:44.

unblivable its working ...thanks


Submitted by Anonymous (not verified) on Fri, 2010-09-10 10:23.

Thanks for this tip, it works ! You're awesome !!! :D

Wow!! you are great!

Submitted by Anonymous (not verified) on Tue, 2010-09-07 23:15.

Wow!! you are great!

Saved my day

Submitted by AJ (not verified) on Tue, 2010-09-07 15:46.

I'm stuck in a hotel with my company laptop. Couldn't update flashplayer. My admin din't want me to give the password. He would update the player when I am back in my office. I am stuck here for 2 weeks. But because of your link it works now !



From: Mohsen-Iran

Submitted by mohsen (not verified) on Mon, 2010-09-06 10:43.

Thank you very very much.
That worked very good.

I like it!!

Submitted by Gogol (not verified) on Sat, 2010-09-04 03:00.

Thanks Mate...
Your INFO is real good..


Not working...

Submitted by Anonymous (not verified) on Thu, 2010-09-02 13:22.

When I try to download it, there pops plugins-screen and it says "Firefox failed to install file from
Cause: installation script? (text was not in english and I don't know it in english)couldn't be found. -204". Am I just stupid or is there something wrong?

Help for a Mac

Submitted by dina (not verified) on Mon, 2010-10-25 02:07.

I'm getting the "-204" script error as well and I can't get past it. Please help...I've been at this for over and hour.

You shuold save the link, not

Submitted by fabio on Mon, 2010-10-25 09:28.

You shuold save the link, not directly clicking.. Click with your right mouse button (maybe you should press the Apple button then click) and then use save as or similar.


Submitted by Anonymous (not verified) on Thu, 2010-09-02 13:37.

Never mind got it working now. Thank you so much for this.


Submitted by Anonymous (not verified) on Tue, 2010-08-31 16:24.

as for me, it's exactly the same with the computers of my university... stupid shi*...

but your advice is great! easy to understand! an working!

Thanks so much :)