| All comments about pfc.sys: |
 Dominique | Installed by interlink intervideo player |
 | I removed it and lost my optical drives (windows could not find) |
 | Listed as a driver for samsung DVD burner, but is digitally unsigned. |
| Bill | Padus, Inc. is a leading developer of professional CD and DVD duplication, |
| | Installed by nstant media Nvidia DVD decoder |
| Cuk | I think that is a Pinacle Studio 9 file |
| oldbrazil | I removed it, and my 2 DVD player/burner could not be found by windows |
 | Installed by Adobe Encore 2.0 on XP x64 - BSOD every boot |
| POP | optical drives need it else it can't be work |
| Camo | Lower level filter DVD/CD driver installed by intervideo |
| | das mein Magix Video deluxe es braucht und meint nix zu machen weil pfs.sys veraltet ist. |
| Mauro | I removed it and lost my optical drives (windows could not find) |
| | appeared after installing intervideo |
 Dicksp | installed with ACDSee Multimedia pack |
| Tom | Somehow I lost it, or it became unsigned or something and now my LITON CD ROM doesn't work!!! :( |
| | adoby audition driver |
| | Nvida Pure Decoder |
| | once ya have installed it ull need it 4ever. |
| Runaway1956 | A quick google of the file turns up a zillion hits on CD/DVD players. It's only important if you want your toaster to work. :) |
| | It is a samsung DVD driver |
| Chyro | I agree with the Pinnacle Studio verdict by Cuk - the only software out of all the abiove comments that I have on my system |
| The Monster | It is installed automatically with Photoimpression 5. Part Of Epson Scanner 3490 (& others) installation CD. |
| mutt | DVD Lab Pro installed it |
| JC_N | optical drives disappear when pfc.sys is disabled |
| Scree | Installed by InterVideo products that include cd burning capability, such as WinDVR, WinDVD, etc. May cause incompatibility with other burning software or dvd/cd drives. If don't mind disabling cd burning in such apps, can remove by deleting pfc.sys, deleting the registry key HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\pfc, and removing pfc from LowerFilters at HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\[the key for "DVD/CD-ROM drives"]. |
| Tony | I think it is a file which will be created while a software in relation to the use of CD/DVD. So it's not dangerous and better not to delete it . |
| RFunk | Uninstalling InterVideo, said not needed anymore. I kept it in case.. |
| RanuKanu | belongs IMO to windows - i lost my CD-Drives if i did not start it |
| FabioC | This is Padus ASPI shell which lets the Pinnacle software write to multiple drives at once. |
| UMLGuy | Came with preinstalled software, all virus and spyware scans negative. Have no troubles. |
| Tunay Durul | I removed it and lost my optical drives |
| QWERTY_rus | it is not dangerous but it's very problematic/ i have some problems with writing dvd+-r/rw discs on many computers after pfc.sys appeare. i have not been able to determine which programs installs that driver/ |
| mark | It uses C/C++ programming to enhance CD/DVD software hardware functionality See also: Link |
| Allan Barker | Video driver required to play DVD's See also: Link |
| Allan Barker | Padus ASPI Shell is just a Video Driver for DVD programs. You must keep it. |
| WOFall | I'm pretty sure it's installed by "Sonic MyDVD". I did not try to remove it. It is not possible to verify its signiture. May be related to Roxio (who own sonic) See also: Link |
| ultramage | seems that clonecd also installs this; errors out on Vista |
| Alex | I removed it and lost my DVD (XP 64) See also: Link |
| Philippe | if you have tried WinDVD and then uninstall it, your burner will no longer recognize unformated CDRWor DVDRW, Had to delete it, remove the keys, go to thedevicemanager, select the burner, delete it so that its driver gets disabled and uninstalled, then reboot to have the DVD recognized again without PFC.SYS in the list of files for the DVD driver. Anyway, It's not signed. Causes just havoc with other burning softwares. Nor dangerous by itself but works only with some specific burning softwares that need it (I wonder why WinDVD requires it for reading a DVD, but it breaks burning) |
| Growler | Seemed to be installed with Nvidia Purevideo Decoder |
| Wm Rickert | Causes Crysis to crash in Vista Ultimate x64 Delete it. Vista doesn't need it anyway. |
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