Although Microsoft does not support Windows XP updates any more, I'm sure there are still many users using it due to their personal habits or job demands. Therefore, XP's product keys may be necessary even now. Here lies the most comprehensive list of Windows XP product keys.

The following CD keys are official and original from Microsoft, mainly used for Windows XP Professional Service Pack 2/3 VOL/VLK system images, which are the easiest ones to find on the Internet.

M6TF9-8XQ2M-YQK9F-7TBB2-XGG88

MRX3F-47B9T-2487J-KWKMF-RPWBY

QC986-27D34-6M3TY-JJXP9-TBGMD

• 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

TQMCY-42MBK-3R4YG-478KD-7FY3M

• 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

MRX3F-47B9T-2487J-KWKMF-RPWBY

P2BXT-D7Y8P-F6WF2-HYXY9-49TJD

K7RGC-CDXYJ-FTYH2-Y3VVV-KBYC7

TW8WB-MKT89-FRD3V-H6CGJ-6JW83

KDD3G-HGVGM-M24P4-6BMMY-9XHF8

KG7G9-67KHV-4FQKV-4DYXK-BHQTJ

VF4HT-MPWB8-TWV6R-K6QM4-W6JCM

M68XC-TX2C9-PKK8H-GP8JH-RC8XB

KYKVX-86GQG-2MDY9-F6J9M-K42BQ

C873T-F3X3M-9F6TR-J26GM-YTKKD

F4G2M-BH2JF-GTGJW-W82HY-VMRRQ

K72PX-D96QW-RCHB9-3P96F-YQBCY

GYFDM-KCXHW-6GFGQ-JQ9FH-B4TRY

P2BXT-D7Y8P-F6WF2-HYXYP-49TJD

JQ4T4-8VM63-6WFBK-KTT29-V8966

RH6M6-7PPK4-YR86H-YFFFX-PW8M8

• C4BH3-P4J7W-9MT6X-PGKC8-J4JTM
• B2Y39-43MG6-MMGRG-7VKCF-VXMCM

XP8BF-F8HPF-PY6BX-K24PJ-TWT6M

• XJM6Q-BQ8HW-T6DFB-Y934T-YD4YT
• WRKF9-4FQ88-XTQYB-8KV6J-7TJR8

CD87T-HFP4C-V7X7H-8VY68-W7D7M

CCMWP-99T99-KCY96-FGKBW-F9WJT

DMC3M-2PD9R-9F8RY-KCKYC-JPXWM

KJTHV-V4BVY-6R9JK-YJM7X-X7FDY

GWH28-DGCMP-P6RC4-6J4MT-3HFDY

• 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

• 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

• 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

• B66VY-4D94T-TPPD4-43F72-8X4FY
• VCFQD-V9FX9-46WVH-K3CD4-4J3JM

WBD2T-3V7TW-GWJW6-HC6CK-R7MBJ

WPH7P-DQMY8-97MWQ-Y26V7-3C4HM

• M4733-B8WX6-G999M-P3YR6-TDYVM
• PFC3B-RTB4W-F3Q44-JWQQR-447BB

HH7VV-6P3G9-82TWK-QKJJ3-MXR96

F4297-RCWJP-P482C-YY23Y-XH8W3

MRX3F-47B9T-2487J-KWKMF-RPWBY

QC986-27D34-6M3TY-JJXP9-TBGMD

• 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

R7Q3G-CHTW9-CCQV9-G7DX6-RVTDY

DRYCH-Q9RY7-YH62D-K98QM-KCGQ8

• 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

• JT42G-DDBCX-WTDMB-8WCT2-JGGH8
• V7BWD-G9YR6-9FG87-8Q2HV-YJGTG
• PW6PT-TCGBR-HKTCT-GKKY6-QGK86
• MT8JF-T82RK-R6C82-3YGHH-224PP
• G7BR9-8QV29-3QFHP-F84WG-X9PYQ
• XYRYX-XCG6K-W7PK8-2CTQQ-86DWR
• VTYH4-P88R2-MW38B-Q62KT-48F7Y
• MY7CJ-VQWBC-36JWH-6CJ37-TQVHC
• XMCM6-DKYCQ-2BHQH-4PCHR-TBJCR

VOLs (short for Volume Licensing for Organizations, a.k.a., VL) are any Windows OS setup CD/DVD or image files containg the "VOL" accronym, indicating that it is one of the licensed Windows copies. According to the regulations of VOL plans, VOL licensed products don't need prior activation.

VLK (short for Volume Licensing Key) refers to the product key required in the VOL edition's deployment rather than the edition name. These keys are only suitable for VOL editions, and with one effect–prove the product is legal and licensed under VOL.

According to the license agreement, the product keys for the retail editions of XP can only be used on one PC, but the ones for VOL editions can be supplied for any number of PCs for use. Second, retail edition of XP need activation, while VOL editions don't implement this concept. Last, VOL editions of XP don't have a Home Edition, and their function is exactly the same as a Professional Edition.