Below is a running list of hotfixes, security updates, and non-required updates.
| Type | KB | Published | Required? | Restart? |
|---|---|---|---|---|
| Update: Stability & Reliability | KB974431 | 10/12/2009 | No | Yes |
| Security: CryptoAPI spoofing | KB974571 | 10/13/2009 | Yes | Yes |
| Security: LSASS DoS | KB975467 | 10/13/2009 | Yes | Yes |
| Update: Time Zone | KB976098 | 11/16/2009 | No | No |
| Update: Stability & Reliability | KB977074 | 01/25/2010 | No | Yes |
| Security: SMB Remote Code Execution | KB971468 | 02/09/2010 | Yes | Yes |
| Security: Hyper-V DoS | KB977894 | 02/09/2010 | Yes | Yes |
| Security: SMB Remote Code Execution | KB978251 | 02/09/2010 | Yes | Yes |
| Update: Application Compatibility | KB978562 | 02/22/2010 | No | Yes |
| Update: Application Compatibility | KB978637 | 02/22/2010 | No | Yes |
| Update: Time Zone | KB979306 | 02/22/2010 | No | No |
| Update: Application Compatibility | KB976264 | 03/09/2010 | No | No |
| Update: Application Compatibility | KB981618 | 04/12/2010 | No | Yes |
Note: There have been 2 required reboots of Hyper-V Server 2008 R2 since release.
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