Windows 10 build 21390.1000

10.0.21390.1000.co_release_svc_prod1.210524-1655
Build of Cobalt
10.0.21390.1000.co_release_svc_prod1.210524-1655
OS family
Architecturex86, x64, ARM64
Compiled2021-05-24
Timebomb2021-10-31 (+160 days)
Works in
About
21390.1000-winver.png
SKUs
Home (N, Single Language, China)
Pro (N, Single Language, China)
Pro Education (N)
Pro for Workstations (N)
Education (N)
Enterprise (G, N)
Enterprise Evaluation (N)
Enterprise multi-session
IoT Enterprise
Team
Cloud (N)
Key
Use a Windows 10 Retail serial
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Windows 10 build 21390.1000 is an update to build 21390.1 that was released to the Dev Channel on 7 June 2021 and, according to Microsoft, is the first in a series of updates in order to test the process of releasing multiple cumulative updates on top of each other. However, several enthusiasts pointed out that Microsoft is releasing cumulative updates because the developers were at the time currently working on merging the Sun Valley work in preparation for the Microsoft event on 24 June.[1][2]

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