How I do re-install the webplayer when it fails to work?

I have tried to install the Unity Web Player multiple times. I have installed, installed again, unistalled, reinstalled, installed over, installed Unity Setup 2.6.1.....

I have downloaded UnityWebPlayer.exe from my son's Chaotic site and from NASA. Every time I run the program it says it has installed, but everytime a click a link to start it, it asks to install again.

I went to this site http://unity3d.com/webplayer/version/ and it says... Unity Plugin version: not installed Unity Engine version: not installed

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asked Feb 10, 2010 at 04:22 AM

Sean gravatar image

31 1 2 4

@Sean, did you ever get it to work?

Apr 04, 2010 at 06:46 PM Cyclops

I am getting the auto update failed error now, and none of the steps described above helps. I have also tried deleting the tmp files and the network management have opened a rule for *.unity3d.com.

Urgent matter, please help.

Apr 08, 2013 at 10:11 AM adrianemile
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8 answers: sort voted first

I am not totally sure you should download our webplayer from any site other than ours. No-one has the rights to host our webplayer other than us, so please be careful if you download from unauthorised sites.

I would recommend the following:

If you are unable to play games based on Unity webplayer please follow these steps:

On PC:

a) Close all browsers.

b) Use Control Panel Add/Remove Programs to remove the Unity Web Player from your machine.

c) Reboot your machine.

d) Download from our website a new copy of the latest webplayer plugin (http://unity3d.com/webplayer/) and save the file to your desktop.

e) Close all browsers.

f) Run the webplayer installer.

g) Once the installer had finished, visit our website at the following address:


On Mac:

a) Log onto your mac with a user account that has admin privileges.

b) Close all web browsers

c) Delete the file called:

/Library/Internet Plug-Ins/Unity Web Player.plugin

d) Empty the trash.

e) Reboot the Mac and log in with an admin account.

f) Visit:


If the webplayer has installed correctly, and your machine is capable of playing Unity content, then you should see our demo running in your browser. If you can see our demo then other games should run also. If you do not see our demo running, please tell us in as much detail as possible what happens at each of the steps above.

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answered Apr 04, 2010 at 01:02 PM

Graham Dunnett gravatar image

Graham Dunnett ♦♦
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This site really needs a "Unity Employee" badge. Or is that what the two rhomboids by the name mean?

Apr 04, 2010 at 02:08 PM Ricardo

I would assume anyone with "Administrator" rights (which is what these are: ), would be an employee of Unity Technologies (or something very close to that).

Apr 04, 2010 at 05:18 PM qJake

We actually choose to use StackExchange because it allows everyone on the site to be equal. All us can build up reputation on the site by helping others. At the current time, Duck has the highest reputation and he is not a Unity employee. Choose your answers based on reputation, not on whether they work for Unity!

Apr 11, 2010 at 08:52 AM Graham Dunnett ♦♦
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You should contact support@unity3d.com about this.

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answered Feb 10, 2010 at 07:23 PM

andeeee gravatar image

andeeee ♦
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The answer I gave is that standard response you'd get from support. ;-)

May 13, 2010 at 10:03 AM Graham Dunnett ♦♦
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all steps works great i got win 7 x64 , i uninstalled, rebooted, reinstalled, rebooted, tried the demo didn't work, manually installed, tried the demo didn't work, can't you just make a working install patch or something??

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answered Jan 03, 2012 at 11:16 AM

Oujee gravatar image


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Same here, nothing works for me. I followed the instructions written above but every time I try to install Unity web Player the window pops up

Error opening file for writing: Unity/WebPlayer/UnityBugReporter.exe Click Abort to stop the installation, retry to Try again, or Ignore to Skip this file.

So, I always have to cancel the installation, unfortunately. I guess I have to find games which do not require this weird player.

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answered Jun 26, 2013 at 09:08 AM

Syn77 gravatar image


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The demos work great for me, but my game (Battlestar Galactica Online) does not work properly. Running on Mac OS X (10.5). Demos play fine, when I try to run the game though, about halfway through loading it says "Error launching Unity Player"

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answered Aug 23, 2013 at 02:47 AM

Blado gravatar image


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asked: Feb 10, 2010 at 04:22 AM

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Last Updated: Apr 21 at 07:06 PM