Windows 10 Insider Builds

Updated: 10/1/2017

Windows 10 Insider Build Versions and Release Dates for PC’s.

BUILD 9841 | October 1st, 2014 (iso) [WED]

BUILD 9860 | October 22nd, 2014 [WED]

BUILD 9879 | November 12th, 2014 [WED]

BUILD 9926 | January 21st, 2015 [WED]

BUILD 10041 | March 18th, 2015 (iso) [WED]

BUILD 10049 | March 30th, 2015 [MON]

BUILD 10061 | April 22nd, 2015 [WED]

BUILD 10074 | April 29th, 2015 (iso) [WED]

BUILD 10122 | May 20th, 2015 [WED]

BUILD 10130 | May 29th, 2015 [FRI]

BUILD 10158 | June 29th, 2015 [MON]

BUILD 10159 | June 30th, 2015 [TUE]

BUILD 10162 | July 2nd, 2015 [THU]

BUILD 10166 | July 9th, 2015 [THU]

BUILD 10240 | July 15th, 2015 [RTM] [WED] – (*) Doesn’t count as an insider build release

BUILD 10240 | July 29th, 2015 [GA] [WED] – (*) Doesn’t count as an insider build release

BUILD 10525 | August 18th, 2015 [TUE]

BUILD 10532 | August 27th, 2015 [THU]

BUILD 10547 | September 18th, 2015 [FRI]

BUILD 10565 | October 12th, 2015 [MON]

BUILD 10576 | October 29th, 2015 [THU]

BUILD 10586 | November 5th, 2015 [THU | 10:00am]

BUILD 11082 | December 16th, 2015 [WED | 10:05am]

BUILD 11099 | January 13th, 2016 [WED | 10:03am]

BUILD 11102 | January 21th, 2016 [THU | 10:03am]

BUILD 14251 | January 27th, 2016 [WED | 10:02am]

BUILD 14257 | February 3rd, 2016 [WED | 4:01pm]

BUILD 14267 | February 18th, 2016 [THU | 10:06am]

BUILD 14271 | February 24th, 2016 [WED | 10:01am]

BUILD 14279 | March 4th, 2016 [FRI | 10:07am]

BUILD 14291 | March 17th, 2016 [THU | 4:05pm] | w/Edge Ext.

BUILD 14295 | March 25th, 2016 [FRI | 10:01am]

BUILD 14316 | April 6th, 2016 [WED | 10:02am]

BUILD 14328 | April 22nd, 2016 [FRI | 08:01am]

BUILD 14332 | April 26th, 2016 [TUE | 3:01pm]

BUILD 14342 | May 10th, 2016 [TUE | 6:00pm]

BUILD 14352 | May 26th, 2016 [THU | 3:30pm]

BUILD 14361 | June 8th, 2016 [WED | 10:00am] – Dona Sarkar’s First Build Rel.

BUILD 14366 | June 14th, 2016 [TUE | 3:20pm]

BUILD 14367 | June 16th, 2016 [THU | 7:15pm]

BUILD 14371 | June 22nd, 2016 [WED | 9:00am]

BUILD 14372 | June 23rd, 2016 [THU | 3:00pm]

BUILD 14376 | June 28th, 2016 [TUE | 3:00pm]

BUILD 14379 | June 30th, 2016 [THU | 3:00pm]

BUILD 14383 | July 7th, 2016 [THU | 10:00am]

BUILD 14385 | July 9th, 2016 [SAT | 3:00pm]

BUILD 14388 | July 12th, 2016 [TUE | 3:00pm]

BUILD 14390 | July 15th, 2016 [FRI | 10:00am]

BUILD 14393 | July 18th, 2016 [MON | 3:00pm] [RS1|RTM]

BUILD 14393 | August 2nd, 2016 [TUE | 10:00am] [RS1|GA] – (*) Doesn’t count as an insider build release

BUILD 14901 | August 11th, 2016 [THU | 3:32pm]

BUILD 14905 | August 17th, 2016 [WED | 10:00am]

BUILD 14915 | August 31st, 2016 [WED | 10:00am]

BUILD 14926 | September 14th, 2016 [WED | 10:00am]

BUILD 14931 | September 21st, 2016 [WED | 3:00pm]

BUILD 14936 | September 28th, 2016 [WED | 10:00am]

BUILD 14942 | October 7th, 2016 [FRI | 10:00am]

BUILD 14946 | October 13th, 2016 [THU | 10:00am]

BUILD 14951 | October 19th, 2016 [WED | 3:00pm]

BUILD 14955 | October 25th, 2016 [TUE | 10am]

BUILD 14959 | November 3rd, 2016 [THU | 10am]

BUILD 14965 | November 9th, 2016 [WED | 10am]

BUILD 14971 | November 17th, 2016 [THU | 10am]

BUILD 14986 | December 7th, 2016 [WED | 3pm]

BUILD 15002 | January 9th, 2017 [MON | 10am]

BUILD 15007 | January 12th, 2017 [THU | 3pm]

BUILD 15014 | January 19th, 2017 [THU | 3pm]

BUILD 15019 | January 27th, 2017 [FRI | 10am]

BUILD 15025 | February 1st, 2017 [WED | 12pm]

BUILD 15031 | February 9th, 2017 [THU | 3pm]

BUILD 15042 | February 24th, 2017 [FRI | 10am]

BUILD 15046 | February 28th, 2017 [TUE | 3pm]

BUILD 15048 | March 2nd, 2017 [FRI | 10am]

BUILD 15055 | March 10th, 2017 [FRI | 10am]

BUILD 15058 | March 14th, 2017 [TUE | 3pm]

BUILD 15060 | March 16th, 2017 [THU | 3pm]

BUILD 15061 | March 17th, 2017 [FRI | 10am]

BUILD 15063 | March 20th, 2017 [MON | 7pm] [RS2|RTM]

BUILD 15063 | April 11th, 2017 [TUE | 10am] [RS2|GA] – (*) Doesn’t count as an insider build release

BUILD 16170 | April 7th, 2017 [FRI | 10am] [RS3]

BUILD 16176 | April 14, 2017 [FRI | 10am]

BUILD 16179 | April 19, 2017 [WED | 10am]

BUILD 16184 | April 28, 2017 [FRI | 10am]

BUILD 16188 | May 4th, 2017 [THU | 10am]

BUILD 16193 | May 11th, 2017 [THU | 10am]

BUILD 16199 | May 17th, 2017 [WED | 10am]

BUILD 16215 | June 8th, 2017 [THU | 3pm]

BUILD 16226 | June 21st, 2017 [WED | 3pm]

BUILD 16232 | June 28th, 2017 [WED | 3pm]

BUILD 16237 | July 7th, 2017 [FRI | 10am]

BUILD 16241 | July 12th, 2017 [THU | 10am]

BUILD 16251 | July 26th, 2017 [WED | 10am]

BUILD 16257 | August 2nd, 2017 [WED | 3pm]

BUILD 16273 | August 23rd, 2017 [WED | 10am]

BUILD 16275 | August 25th, 2017 [FRI | 12pm]

BUILD 16278 | August 29th, 2017 [TUE | 2pm]

BUILD 16281 | September 1st, 2017 [FRI | 3pm]

BUILD 16288 | September 12th, 2017 [TUE | 3pm]

BUILD 16291 | September 19th, 2017 [TUE | 2pm]

BUILD 16294 | September 20th, 2017 [WED | 8pm]

BUILD 16296 | September 22nd, 2017 [FRI | 3pm]

BUILD 16299 | September 26th, 2017 [TUE | 2pm]

Windows 10 Nerd Math. What day of the week an Insider Build typically gets released.

DAY	#ofRel	PER%
MON	6	6.1%
TUE	14	14.1%
WED	33	33.3%
THU	26	26.3%
FRI	19	19.1%
SAT	1	1.0%
SUN	0	0

*Total of 99 Releases as of 9/26