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This guide provides a comprehensive overview of which Windows Update versions are compatible with specific legacy operating systems.
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| Version |
95 |
NT4 |
98 |
Me |
2000 |
XP |
Server 2003 |
| WU V2 |
with IE4 |
with IE4 |
FE, with IE4 |
No |
No |
No |
No |
| WU V3.1 |
Yes |
x86, from SP3 to SP6a |
Yes |
Yes |
up to SP2 |
No |
No |
| WU V4 |
No |
No |
Yes |
Yes |
Yes |
up to SP2 |
up to SP1 |
| WU V5 |
No |
No |
No |
No |
from SP3 and up |
Yes |
Yes |
| WU V6 |
No |
No |
No |
No |
from SP3 and up |
Yes |
Yes |
| MU |
No |
No |
No |
No |
from SP3 and up |
Yes |
Yes |
Note: Based on original MS support cycles.
WU refers to Windows Update and MU refers to Microsoft Update.
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Server Mapping:
- NT Server 4.0: Matches NT 4.0
- 2000 Server: Matches Windows 2000
- Server 2003: Matches XP
Embedded Mapping:
- NT 4.0 Embedded: Matches NT 4.0
- XP Embedded / POSReady: Matches XP
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