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What is it?
ATI External Event Utility EXE Module AKA ATI Hotkey Poller - ati2evxx.exe

What does it do?
ati2evxx.exe - This process provides optional features that the majority of us really couldn't care less about. The XT's overdrive feature uses this. If you have an XT you'll probably want to leave this on.

This is installed as a service so you'll need to do the following to disable:
Start --> Run --> services.msc
Find ATI Hotkey Poller and double click it.
Change the startup type to disabled

According to ATI this process is supposed to have 2 instances running. ( link )

The best explanation I've managed to find for this is: (Source)
We have to have the 2 instances to support multisession (fast user switch) support. A system service does not have access to change per user settings on a any session other than the default session. In fast user switch, multiple sessions get created. To be able to change the settings on non-default session we need to create a per user instance of the external event.

Many users have reported this process to slow their boot time down.

Virus Precaution:
The original ati2evxx.exe from ATI gets placed at C:WINDOWSSystem32ati2evxx.exe . If you find it anywhere else then you should be suspicious for sure.

You'll want to keep an eye on this google search for any known viruses. At this time I have not found ANY viruses that run themselves using this filename. All of the results currently affect this file in some way, but do not actually run as this filename.

Fix ati2evxx.exe Errors: Free Scan

Recommended: Free PC Speed Test - what is slowing down your PC?

ati2evxx.exe is made by a Third Party but is most likely safe

Startup DB Entries:
[ATIPOLAB]"Hotkey handler for ATI desktop and mobile graphics chipsets. Users report that most of the hotkeys aren't well documentedu
[ATIPOLL]"Hotkey handler for ATI desktop and mobile graphics chipsets. Users report that most of the hotkeys aren't well documentedu

Service DB Entries:
Ati HotKey Poller ATI Video Card Control Panel


Every attempt has been made to ensure the information about ati2evxx.exe is accurate but alot of malware applications try to pose as valid applications. If it is something other than what was posted above please leave some feedback in the forum.
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User Comments
RobDoing an internet search for this file keeps coming up as "safe", but my laptop was stuck in 4-bit color and would crash everytime I tried to change the settings. Disabling of the ATI HotKey poller fixed this problem, the ati2evxx.exe file was the only unsigned file in my display drivers, I think it sems awfully suspicious.
Third Party Safe Apps
NvCpl.dll | ccApp.exe | NvMcTray.dll | ccproxy.exe | nwiz.exe | jusched.exe | igfxtray.exe | KillBox.exe | ati2evxx.exe | rtvscan.exe | khooker.exe | hkcmd.exe | WZQKPICK.EXE | cli.exe | qttask.exe | symlcsvc.exe | BTSTAC~1.EXE | savscan.exe | isafe.exe | atiptaxx.exe | vsmon.exe | gcasserv.exe | nvsvc32.exe | nerocheck.exe | SNDSrvc.exe | gearsec.exe | nmain.exe | ARESLITE.EXE | cfd.exe | cthelper.exe | realsched.exe | zlclient.exe | em_exec.exe | firefox.exe | igfxpers.exe | ccsetmgr.exe | navapsvc.exe | ypager.exe | KHALMNPR.EXE | reader_sl.exe |