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  • World of Warcraft
  • 605,285 Monthly Downloads
  • Supports: 5.4.8
  • 20,773,892 Total Downloads
  • Updated 09/21/2014
  • Created 06/06/2009
  • 9,688 Favorites
  • Project Site
  • Comments
  • Release Type: Release
  • License: GNU General Public License version 3 (GPLv3)
  • Newest File:
Support development! **

About _NPCScan

_NPCScan & Warlords

Due to changes in how the game caches mobs in WoD, it is looking like _NPCScan will no longer be able to auto detect non-Vignette mobs. Due to this the only way to find pre-MoP rares via _NPCScan will be via mouse over or the new dynamic target macro keybind being added. The new keybind will trigger a /targetexact …” macro that updates with tracked mobs based on the zone you are currently in. Vignette mobs will still automatically trigger an alert when the mob gets in range, and should work more reliably due to updates to the Vignette API.

_NPCScan tracks seldom-seen rare mobs by proximity alone, making the old “/targetexact …” macros obsolete. It has the same range as those targeting macros, but you won't have to mash any buttons. Just go about your business and let _NPCScan alert you when it finds something.

V5.x Changes
  • Due to changes in how the addon stores data, some settings might get reset when updating.
  • The default alert is suppressed while on flight paths by default. If a mob is found, the whisper sound effect will play and the mob & location will be placed in the chat log. You can turn this off from the settings.
  • _NPCScan now includes all rare mobs in the game.
  • The "One of Many", "Timeless Champion" & "Champions of Lei Shen" Achievements have been added.
  • Rare Mobs and Tameable Mobs have their own tabs now.
  • Custom mobs have been added for the Ghostly Pandaren Fisherman & Craftsman.
  • Individual mobs can be removed from their tabs to stop tracking them.

If you have a question check the FAQ, or a problem create a ticket

If you have a question/comment about _NPCScan.Overlay please post it in it's comment section.



NPCScan now tracks "vignettes". These are the little skulls appear on the minimap, that denote rare mobs. This is a beta feature and is disabled by default. Enabling this feature will alert you to a rare that's within minimap range, without any worries about having to clear your cache. When you get an alert you will be shown a target button similar to the standard mob alert, letting you know that a vignette mob was detected. Clicking on the target button will try and target the mob. Once a mob is targeted, the target button will update to reflect the mob found.

Known Issues: Currently there is no way to detect what mob the vignette represents. Because of this there is no way to filter out and ignore individual mobs. The vignette tracking will ignore achievement mobs groups that have their tracking turned of via unchecking their tab. Also the targeting button might have some issues if there are more than one vignette mobs in target range and may not work 100% of the time.

The Cache

This addon doesn't use nameplates or mouseover units to find rares. Instead, it checks your creature cache for the moment a rare mob is found. There is one catch to this technique however: Once a mob is “found”, _NPCScan won't be able to find it again until your cache is clearedf you find a rare mob's corpse—Dirkee for example—you would have to clear your cache before _NPCScan would find Dirkee again. Thankfully, clearing your cache is a safe and simple matter.

Clearing Your Cache

To clear your cache, follow these straightforward steps:

  1. Exit World of Warcraft
  2. Delete the “Cache” sub-directory inside your World of Warcraft folder.  For example on a standard Windows XP installation, you would delete the folder “C:\Program Files\World of Warcraft\Cache”.
  • Advanced users can delete “C:\Program Files\World of Warcraft\Cache\WDB\enUS\creaturecache.wdb” specifically to improve log-in times, where enUS is your language code.

Note: Windows Vista and Windows 7 users see this info if your cache isn't in the location above.

That's it. Log in after you've done that and you'd be able to find Dirkee a second time. It's completely safe because WoW will recreate your Cache folder after you log in again.

Cache Warning

If a rare mob is already cached when you log in, _NPCScan will print a warning message with the names of those mobs. If you see this message but still want to find the listed NPCs again, it's time to clear your cache by following the above procedure; Otherwise, you can quit searching for those mobs using the Search options window detailed below. You can suppress this log-in message using the main options pane, as well.

“Found” Alert

When a rare mob is found, _NPCScan alerts you by playing a loud and distinctive sound, making your screen pulse red, and displaying an animated Targeting Button. To get a feel for what this alert looks and sounds like, try the “Test Found Alert” button in the addon's main Interface Options panel. (See the Options section below.)

Targeting Button

When clicked, the targeting button tries to target the most-recently-found mob.  You can also bind a key to hit this button. If the default button position isn't to your liking, you can move it while holding your CTRL key.

Note: The button cannot be shown during combat. In the unlikely case that you do find a rare while fighting, the button will appear after you leave combat. You will still hear the alert however, and the name of the mob will appear in your chat log.


_NPCScan's main options window can be accessed from the Interface Options menu. This panel includes a “Test Found Alert” button, various ways to customize the alert sound, and an option to suppress cache warning messages on log-in. New sounds can be added to the alert sound dropdown menu by installing SharedMedia-type addons.

Search List

The list of mobs that _NPCScan searches for can be modified easily through the Interface Options panel, however it comes pre-configured with most rare Outlands and Northrend mobs.; To access the mob list, type “/npcscan”. Grayed out NPCs in a list aren't being searched for, either because they're cached or not needed for their achievement.

The first tab available lists Custom NPCs that you can enter or remove manually. NPCs that are already cached show a red “X” in the first column. You can add or remove Custom NPCs with the [+] and [-] buttons at the bottom right.

All other tabs control achievements like Bloody Rareand Frostbitten. These tabs show an additional column on the right with green check marks for completed achievement mobs. You may enable or disable tracking each achievement with its tab's checkbox.

To remove non custom mobs from a tab, click on the mob that you want to remove and then click on the "Remove" button. This will remove the selected mob from the current tab and add it to the Ignore List Tab. If you ever want to restore a Ignored Mob, select it from the "Ignore List" tab, click the "Remove" button and it should be added back to its original tab.

The “Search for completed Achievement NPCs” checkbox at the top left of the pane allows you to keep looking for mobs you no longer need for achievements.

Finding NPC IDs

A mob's NPC ID is its unique identification number, and it can be found on sites like WowHead or WowDB For example, search for the mob “Dirkee” on WowHead and go to the mob's page.  That page's URL will look like

32500 is Dirkee's NPC ID.


The only problem mobs for _NPCScan are tamable beasts & Battle Pets. Whenever you run across the tamed version, _NPCScan gets tricked into thinking that mob is nearby. In order to prevent those false positives, _NPCScan only shows alerts for tamable mobs in their original zones That is, if you spot Loque'nahak in Dalaran instead of Sholazar Basin where it usually patrols, _NPCScan would ignore it. When one of these tamable mob false-alarms happens, you'll see a message in your chat window explaining why it got ignored.

Since this makes tamable mobs are so difficult to track, I suggest you fly to the tamable mob's zone first, clear your cache, and then search for it.; Any time you pass through a populated area like Dalaran, you risk filling your cache with popular rare pets.

For Battle Pets there is no way for it to determine if a mob is a spawn or someone's pet. Many Battle Pet addons and just opening the Pet Journal will often cause Battle Pets to become cached.

James D. Callahan III <>
2014-09-21 01:07:39 -0500


James D. Callahan III:
    - Added global Show Alerts As Toast option; displays the alert text as a persistent (and dismissible) toast rather than printing it to the chat log. Defaults to enabled.


First Previous Page 49 of 150 Next Last
  • #2059

    Please update! I absolutely love this addon, and I would like to use it even if the new panda rares aren't included. Please!?

  • #2058

    pls update !!! i target rare and alarm .....

  • #2057

    You don't have the latest version, because, for some majorly idiotic reason, noone cared to update NPCScan for 5.1.0. What is going on, seriously? Did they abandon the project entirely?

    Last edited by wishfire on 1/2/2013 6:35:49 PM
  • #2055

    Today (24.12.12) im also experiencing the problem that this addon is "out of date". Even though I have last update.

  • #2053

    Hi everyone

    I got a problem with this addon hope someone can help me, I installed the curse client for wow recently. I installed a recount which is working fine, however when I installed a NPCscan, when I login in and click on the addon button it shows that this addon is out of day but the recount one is ok. and also when i get into the game recount is working but not the NPCscan any ideal what am I doing wrong.

    Thanks all

  • #2054

    On the character selection screen when you first log in, click on the 'Addons' button on the lower left hand side of your screen. Make sure 'Load Out of Date Addons' has a check mark.

  • #2049

    I don't get why you don't make it so that when you kill the NPC, it won't bring it up after that.  Instead, we have to go through our addon directories and find out which ones we've killed and which ones we haven't.  It gets extremely frustrating doing this..

  • #2051

    Any addon that searches for a specific type of creature/mob has to use the combat log to determine when it appears.  This is not the authors fault, its the way the game is made.  Blame Blizzard for making you have to clear the cache for addons like these to work properly, and thank the authors for making these addons in the first place.

  • #2052

    Nope, that is not the issue.

    It appears to me that the modification of the mod over time came to some dirty coding which introduced buggy behavior.

    The problem is that there is code monitoring the achievments which should be able to exclude at least the ones contained in achievments with 100% accuracy only when they have been killed.

    The problem with the code is that if a mob is in the cache, i.e. already seen it will due to some dirty coding not consider it in the scanning anymore. I have posted a patch in the _NPCScan.Overlay mod section, because it was with th eoverlay that I first found the problem, but the patch is actually in NPCScan.

    However the patch is not a solution but a workaround as it breaks the "Scan completed achievement NPCs" option due to the dirty coding.

    I hope this gets fixed sometime in a better manner.

    P.S.: Note that I do not want to blame the author for th edirty coding. Most people developping mods don't have the time to rewrite their code when it should be due to big modifications which may then lead to diry hacked code. This is a spare time occupation after all.



  • #2048
    Easy Cache Deletion

    I recommend creating a batch file (.bat) that automatically deletes the creature cache file. Just create a batch file with the text:

    del "C:\Program Files (x86)\World of Warcraft\Cache\WDB\enGB\creaturecache.wdb"

    You might need to change the directory path a bit. Put the file on your desktop, and when you double click it, the creature cache file is deleted :) Much faster and easier than manually finding it and deleting it everytime :)

    Last edited by Tolfahaxor on 12/17/2012 1:46:11 PM
  • #2056

    Thanks man, this makes it so much more painless, to just do this before starting up WoW :)

  • #2046

    Wieso muss man "Veraltete Addons laden" aktivieren damit NPC_Scan weiter funktioniert, wird das Addon nicht mehr aktualisiert?

  • #2045

    Please get this updated so it works for 5.1

  • #2047

    It works fine with 5.1. Just make sure you enable out of date addons. I've been using it without any problems.

  • #2050

    i have 5 outdated still. havent been able to isolate which one is causing random crashes. but it apears to be a combo. would love to have this updaed so those go away

    that's why its important to update even fi it would normally work fine. to verify this does not happen

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