There is No "legal" way to Do this.
But you can use the ressurect command in the console on PC.
(see here Skyrim Wiki )
gaming.stackexchange.com/users/13179/Lerkes
Console commands (PC only)
If playing on the PC, use the console commands prid
<RefID> and resurrect 1 .
Your follower should go back to life after entering these commands correctly.
prid targets an entity - your follower in this case.
Search for your follower's RefID here: UESP.net Skyrim wiki '
Followers' article Another method to target instead of using prid
<refID> is to open up the console and then click on an entity (like your follower's body), this will automatically do prid <RefID> for the clicked entity.
This is useful if the body of your follower is visible and near you.
Teleporting lost or far follower If your follower is still not near your vicinity or not visible after entering resurrect 1 , try teleporting your follower to your location using the moveto player console command (after entering prid <RefID> ).
moveto player moves that targeted entity near the vicinity of the player.
Your follower should now be near you after doing this.
If for another weird reason, your follower is still not near your vicinity or not visible after doing this, they may have been 'disabled' from the game (might happen with NPCs that are long dead), making your follower not appear in the game.
Type enable in the console to remedy this.
If your follower still isn't up, type resurrect 1 again.
Another option is to make your follower immortal as mentioned in an answer by Renan here .
More info on console commands here: http://uesp.net/wiki/Skyrim:Console
gaming.stackexchange.com/users/4797/galacticninja
There is no way to resurrect lost companions.
Any NPC who dies is dead forever.
gaming.stackexchange.com/users/1719/Invader Skoodge
When a NPC goes to wounded mode other's will leave them alone, but they can still die if you are close to them, either they hit him trying to kill you or you kill him trying to kill them.
You can not make them come back, but staying away from them when they are in this modes help them live.
gaming.stackexchange.com/users/8416/Allan Kimmer Jensen
http://www.uesp.net/wiki/Category:Skyrim-NPCs The above link has Skyrim NPC base ID's.
This works for the PC.
I have searched for the same problem then finally after trial and error of about 50+ codes
I found the code for retrieving an NPC.
If the NPC is dead you do NOT use Resurrect.
The code doesn't seem to be working as intended at the moment.
Instead you use: player.placeatme "BaseID"
So an example of this would be if Alvor died and I needed to bring him back.
This is what it would look like: player.placeatme 00013475
You would enter that into console exactly how it is shown above.
You enter console by pressing the tilda key (~).
Hope this helps!
gaming.stackexchange.com/users/14845/Chris
Alternatively, you can prevent a companion from dying by making them immortal , which means whenever their health drops to zero they will craw for a while before standing up.
To do so type the following code in your console command: setessential #BaseID 1 Replace #BaseID for the respective base
id of your companion.
It can easily be found in the wiki article of your follower.
Example for Lydia : setessential A2C8E 1
To reset to original condition use the same code placing '0' instead of '1'.
gaming.stackexchange.com/users/13090/Renan
You cannot bring them back completely, but dead thrall works well
gaming.stackexchange.com/users/21584/Equimus
I've had a few companions who have died.  Is it possible to resurrect them? If not, where can they be hired from?
How do I resurrect companions / followers?
gaming.stackexchange.com
<the-elder-scrolls-5-skyrim>
gaming.stackexchange.com/questions/36200
gaming.stackexchange.com/users/12035/Coomie
You cannot really ressurect them but you can try the ressurect command on the console. There is no way resurrecting someone in-game except by using console commands (PC).
There is no way resurrecting someone in-game except by using console commands (PC).