Here is a list of free Windows XP product and registration keys (different things.) This list contains many, many, many keys, including OEM, Professional, and manufacturer-specific keys. Use at your own risk, because this might be considered illegal, but XP is discontinued anyways, so you won't be doing any harm to Microsoft ;)
All credits go to a GitHub page, link is at the bottom of the page :)
// Windows XP Pro Product Keys //
Windows XP Professional 32-bit Edition
SP3 VOL
M6TF9-8XQ2M-YQK9F-7TBB2-XGG88
SP3 VOL
MRX3F-47B9T-2487J-KWKMF-RPWBY
SP3 VOL
QC986-27D34-6M3TY-JJXP9-TBGMD
SP3 VLK
TQMCY-42MBK-3R4YG-478KD-7FY3M
SP3 VOL
CM3HY-26VYW-6JRYC-X66GX-JVY2D
DP7CM-PD6MC-6BKXT-M8JJ6-RPXGJ
F4297-RCWJP-P482C-YY23Y-XH8W3
HH7VV-6P3G9-82TWK-QKJJ3-MXR96
HCQ9D-TVCWX-X9QRG-J4B2Y-GR2TT
K2CXT-C6TPX-WCXDP-RMHWT-V4TDT
QHYXK-JCJRX-XXY8Y-2KX2X-CCXGD
MFBF7-2CK8B-93MDB-8MR7T-4QRCQ
2QQ6J-HGXY3-VGH23-HYQDC-BYR2D
CM3HY-26VYW-6JRYC-X66GX-JVY2D
T72KM-6GWBP-GX7TD-CXFT2-7WT2B
SP3 VLK
DG8FV-B9TKY-FRT9J-6CRCC-XPQ4G
RFYPJ-BKXH2-26FWP-WB6MT-CYH2Y
7HPVP-8VHPV-G7CQ3-BTK2R-TDRF3
DG8FV-B9TKY-FRT9J-6CRCC-XPQ4G
CXGDD-GP2B2-RKWWD-HG3HY-VDJ7J
RK7J8-2PGYQ-P47VV-V6PMB-F6XPQ
T44H2-BM3G7-J4CQR-MPDRM-BWFWM
XW6Q2-MP4HK-GXFK3-KPGG4-GM36T
SP3 VOL MSDN
MRX3F-47B9T-2487J-KWKMF-RPWBY
SP3 HP
P2BXT-D7Y8P-F6WF2-HYXY9-49TJD
SP3 OEM SONY
K7RGC-CDXYJ-FTYH2-Y3VVV-KBYC7
SP3 IBM
TW8WB-MKT89-FRD3V-H6CGJ-6JW83
ACER
KDD3G-HGVGM-M24P4-6BMMY-9XHF8
DELL
KG7G9-67KHV-4FQKV-4DYXK-BHQTJ
LENOVO
VF4HT-MPWB8-TWV6R-K6QM4-W6JCM
SP3 OEM THTF
M68XC-TX2C9-PKK8H-GP8JH-RC8XB
SP3 OEM COMPAQ
KYKVX-86GQG-2MDY9-F6J9M-K42BQ
FUJITSU OEM
C873T-F3X3M-9F6TR-J26GM-YTKKD
Pro SP3 OEM FOUNDER
F4G2M-BH2JF-GTGJW-W82HY-VMRRQ
Home SP3 OEM FOUNDER
K72PX-D96QW-RCHB9-3P96F-YQBCY
Home OEM Haier
GYFDM-KCXHW-6GFGQ-JQ9FH-B4TRY
SP2 OEM HP
P2BXT-D7Y8P-F6WF2-HYXYP-49TJD
Home OEM
JQ4T4-8VM63-6WFBK-KTT29-V8966
Home Retail
RH6M6-7PPK4-YR86H-YFFFX-PW8M8
Media Center
C4BH3-P4J7W-9MT6X-PGKC8-J4JTM
B2Y39-43MG6-MMGRG-7VKCF-VXMCM
Professional Corp
XP8BF-F8HPF-PY6BX-K24PJ-TWT6M
Professional OEM
XJM6Q-BQ8HW-T6DFB-Y934T-YD4YT
Professional Retail
CD87T-HFP4C-V7X7H-8VY68-W7D7M
Professional SP2 VOL
CCMWP-99T99-KCY96-FGKBW-F9WJT
Plus!
DMC3M-2PD9R-9F8RY-KCKYC-JPXWM
Windows Server 2003 VOL
KJTHV-V4BVY-6R9JK-YJM7X-X7FDY
Office 2003 VOL
GWH28-DGCMP-P6RC4-6J4MT-3HFDY
SP3
V2C47-MK7JD-3R89F-D2KXW-VPK3J
T7C4Q-47VGM-R7J6B-VPJ84-JPJ93
FY32F-XF3B6-277BF-YWBQF-GVRX3
XBC76-H7RCG-KQPKH-QK8PT-7D789
VQP4F-V47P8-BBDXK-R7K9Q-B42BB
TBHJK-W4DPH-9D267-H93VR-WMXQJ
JBH94-K6WKQ-YHTD6-XJFV9-WJP7Y
C626F-H4CCJ-PWR8R-2RB9K-3G3HD
HRCXT-BY6WB-VBM83-CMBXF-BVWYY
W733W-GWPGB-37X4T-BRD7P-JVT2D
VHBCM-H2YTW-TCYRR-QFTV6-XQQBG
XGVKJ-C8FB2-9GXXF-7DTG4-RYXFB
BMR29-HX9Y6-X6GTX-GKGGX-K8VV6
RHGJC-9CPJC-8M8F6-KYXCP-FRGC6
J3GMD-RMM3Q-HKC62-TV8Y8-246Q3
9HFGJ-KERJT-IOQ73-8YR78-93UT5
JKJIF-YUQEW-786DM-NBDSH-GUIRE
TQ23P-98R87-89340-83QOI-WEJF8
DFHNG-RGTFR-89T57-6983P-UROFD
SJHGL-IUWRT-89023-48HR4–U4938
WHTKJL-RDHF8-7TG64-5ES42-76RY4
23YU7-65RK0-HEVJK-SDAGI-OP265
SP2
KLSDJ-FERIO-UT843-U8JF8-43Y84
93UJF-KDSIU-YT78Y-SDKJF-IOEWJ
FIOSD-FUHY7-ERTY7-843UR-OEJFK
DSHFG-8734Y-78927-4932J-FKJSD
FVHER-UIYT7-84358-93047-48294
2307T-78436-YKJDF-SLHNV-JKSDH
JKSDH-FGSDH-FKJSD-MNF32-98784
79Y5F-I34QY-65784-30UJR-DKSDG
OUI8W-Y3458-7934R-UREJG-KPWER
UIT89-0432U-Y0UTD-JSMCF-KLASD
HIUWE-Y4I78-34U5T-98234-U782T
Unknown
JJWKH-7M9R8-26VM4-FX8CC-GDPD8
Q3R8Y-MP9KD-3M6KB-383YB-7PK9Q
QB2BW-8PJ2D-9X7JK-BCCRT-D233Y
FCKGW-RHQQ2-YXRKT-8TG6W-2B7Q8
F6PGG-4YYDJ-3FF3T-R328P-3BXTG
FM9FY-TMF7Q-KCKCT-V9T29-TBBBG
RK7J8-2PGYQ-4P7VL-V6PMB-F6XPQ
KWT78-4D939-MRKK9-64W8C-CPF33
BJXGH-4TG7P-F9PRP-K6FJD-JQMPM
RBDC9-VTRC8-D7972-J97JY-PRVMG
DW3CF-D7KYR-KMR6C-3X7FX-T8CVM
MQPD6-C748R-FMRV6-8C3QK-79THJ
DTWB2-VX8WY-FG8R3-X696T-66Y46
DW87C-76RXP-LLK6C-3FJ2J-2908F
Windows XP Professional 64-bit Edition
SP2 VOL
B66VY-4D94T-TPPD4-43F72-8X4FY
VCFQD-V9FX9-46WVH-K3CD4-4J3JM
SP2 VOL
WBD2T-3V7TW-GWJW6-HC6CK-R7MBJ
SP2 VOL
WPH7P-DQMY8-97MWQ-Y26V7-3C4HM
SP2 VOL
M4733-B8WX6-G999M-P3YR6-TDYVM
PFC3B-RTB4W-F3Q44-JWQQR-447BB
SP2 VOL
HH7VV-6P3G9-82TWK-QKJJ3-MXR96
SP2 VOL
F4297-RCWJP-P482C-YY23Y-XH8W3
SP2 VOL
MRX3F-47B9T-2487J-KWKMF-RPWBY
SP2 VOL
QC986-27D34-6M3TY-JJXP9-TBGMD
SP2 VOL
C4FPJ-HQCGP-QD3XC-2JF34-FT8Y6
CH6BH-G7PCX-KTM8K-WRKBD-HC7TW
M4676-2VW7F-6BCVH-9QPBF-QBRBM
DW3CF-D7KYR-KMR6C-3X7FX-T8CVM
7FMM3-W4FMP-4WRXX-BKDRT-7HG48
B2RBK-7KPT9-4JP6X-QQFWM-PJD6G
DM8R3-3VBXF-F7JRX-FJ7P4-YD3HM
FCKGW-RHQQ2-YXRKT-8TG6W-2B7Q8
TCP8W-T8PQJ-WWRRH-QH76C-99FBW
CKY24-Q8QRH-X3KMR-C6BCY-T847Y
RBDC9-VTRC8-D7972-J97JY-PRVMG
R3MGD-3H6HQ-RDRCR-KJXTM-3C8JW
SP2 VOL
R7Q3G-CHTW9-CCQV9-G7DX6-RVTDY
SP2 VOL
DRYCH-Q9RY7-YH62D-K98QM-KCGQ8
SP2 VOL
DQ3PG-2PTGJ-43FP2-RPRKB-QBYRY
DQ3PG-2PTGJ-43FP2-RPRKB-QBYRY
BXDQR-2KCR9-2VMJK-WDW94-PH2PB
HC47V-BMGVC-MWB4X-KJTTD-RMH4Y
BRC43-2CBV7-TCB9W-WHRGP-39XWM
BMHW2-GR289-D3PR9-JQF6P-YPQJM
DB8YF-HTGKP-6C948-3BHYD-PH2PB
// What’s VOL and VLK //
VOL (short for Volume Licensing for Organizations, AKA: VL), any Windows OS setup CD/DVD or image file with “VOL” word, that indicates it is one of the licensed Windows copies. And the most important point thing is – according to the regulations of VOL plans, VOL licensed products don’t need to activate at all.
VLK (short for Volume Licensing Key) does refer to the product key required in the VOL edition’s deployment rather than the edition name. And it’s only suitable for VOL edition with the only effect – prove the product is legal, licensed under VOL.
According to the license agreement, the product keys for retail edition of XP can only be used on one PC, but the ones for VOL edition can be supplied for more PCs to use. Second, there is another important difference, the retail edition of XP needs to activate, yet VOLs don’t have this concept totally. Last, VOL edition of XP doesn’t have the Home Edition, and its function is exactly the same with the Professional Edition.
// Prompts //
Before installing Windows XP, do not forget to record the serial numbers on a piece of paper or use your smartphone to shoot it down!