Windows update and KB2716440 fails to install

Up to one month, my win 7 pro 64 windows update system is trying to install KB2716440 but it fails.

There is a SQL Server 2008 R2 64 installed.

I get the generic error code 84B20001.

Also i tryied to download and install it manually, but i get the  same error.

Here is the sql discovery install report in XML:

<?xml version="1.0"?>
<ArrayOfDiscoveryInformation xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <DiscoveryInformation>
    <Product>Sql Server 2008</Product>
    <Instance>MSSQLSERVER</Instance>
    <InstanceID>MSSQL10_50.MSSQLSERVER</InstanceID>
    <Feature>Database Engine Services</Feature>
    <Language>1033</Language>
    <Edition>Enterprise Edition</Edition>
    <Version>10.51.2500.0</Version>
    <Clustered>No</Clustered>
  </DiscoveryInformation>
  <DiscoveryInformation>
    <Product>Sql Server 2008</Product>
    <Instance>MSSQLSERVER</Instance>
    <InstanceID>MSSQL10_50.MSSQLSERVER</InstanceID>
    <Feature>Database Engine Services</Feature>
    <Language>1040</Language>
    <Edition>Enterprise Edition</Edition>
    <Version>10.51.2500.0</Version>
    <Clustered>No</Clustered>
  </DiscoveryInformation>
  <DiscoveryInformation>
    <Product>Sql Server 2008</Product>
    <Instance>MSSQLSERVER</Instance>
    <InstanceID>MSSQL10_50.MSSQLSERVER</InstanceID>
    <Feature>SQL Server Replication</Feature>
    <Language>1033</Language>
    <Edition>Enterprise Edition</Edition>
    <Version>10.51.2500.0</Version>
    <Clustered>No</Clustered>
  </DiscoveryInformation>
  <DiscoveryInformation>
    <Product>Sql Server 2008</Product>
    <Instance>MSSQLSERVER</Instance>
    <InstanceID>MSSQL10_50.MSSQLSERVER</InstanceID>
    <Feature>SQL Server Replication</Feature>
    <Language>1040</Language>
    <Edition>Enterprise Edition</Edition>
    <Version>10.51.2500.0</Version>
    <Clustered>No</Clustered>
  </DiscoveryInformation>
  <DiscoveryInformation>
    <Product>Sql Server 2008</Product>
    <Instance>MSSQLSERVER</Instance>
    <InstanceID>MSSQL10_50.MSSQLSERVER</InstanceID>
    <Feature>Full-Text Search</Feature>
    <Language>1033</Language>
    <Edition>Enterprise Edition</Edition>
    <Version>10.51.2500.0</Version>
    <Clustered>No</Clustered>
  </DiscoveryInformation>
  <DiscoveryInformation>
    <Product>Sql Server 2008</Product>
    <Instance>MSSQLSERVER</Instance>
    <InstanceID>MSAS10_50.MSSQLSERVER</InstanceID>
    <Feature>Analysis Services</Feature>
    <Language>1033</Language>
    <Edition>Enterprise Edition</Edition>
    <Version>10.51.2500.0</Version>
    <Clustered>No</Clustered>
  </DiscoveryInformation>
  <DiscoveryInformation>
    <Product>Sql Server 2008</Product>
    <Instance>MSSQLSERVER</Instance>
    <InstanceID>MSAS10_50.MSSQLSERVER</InstanceID>
    <Feature>Analysis Services</Feature>
    <Language>1040</Language>
    <Edition>Enterprise Edition</Edition>
    <Version>10.51.2500.0</Version>
    <Clustered>No</Clustered>
  </DiscoveryInformation>
  <DiscoveryInformation>
    <Product>Sql Server 2008</Product>
    <Instance>MSSQLSERVER</Instance>
    <InstanceID>MSRS10_50.MSSQLSERVER</InstanceID>
    <Feature>Reporting Services</Feature>
    <Language>1033</Language>
    <Edition>Enterprise Edition</Edition>
    <Version>10.51.2500.0</Version>
    <Clustered>No</Clustered>
  </DiscoveryInformation>
  <DiscoveryInformation>
    <Product>Sql Server 2008</Product>
    <Instance>MSSQLSERVER</Instance>
    <InstanceID>MSRS10_50.MSSQLSERVER</InstanceID>
    <Feature>Reporting Services</Feature>
    <Language>1040</Language>
    <Edition>Enterprise Edition</Edition>
    <Version>10.51.2500.0</Version>
    <Clustered>No</Clustered>
  </DiscoveryInformation>
  <DiscoveryInformation>
    <Product>Sql Server 2008</Product>
    <Instance>SQLEXPRESS</Instance>
    <InstanceID>MSSQL10.SQLEXPRESS</InstanceID>
    <Feature>Database Engine Services</Feature>
    <Language>1033</Language>
    <Edition>Express Edition</Edition>
    <Version>10.3.5500.0</Version>
    <Clustered>No</Clustered>
  </DiscoveryInformation>
  <DiscoveryInformation>
    <Product>Sql Server 2008</Product>
    <Instance>SQLEXPRESS</Instance>
    <InstanceID>MSSQL10.SQLEXPRESS</InstanceID>
    <Feature>SQL Server Replication</Feature>
    <Language>1033</Language>
    <Edition>Express Edition</Edition>
    <Version>10.3.5500.0</Version>
    <Clustered>No</Clustered>
  </DiscoveryInformation>
  <DiscoveryInformation>
    <Product>Sql Server 2008</Product>
    <Instance />
    <InstanceID />
    <Feature>Management Tools - Basic</Feature>
    <Language>1040</Language>
    <Edition>Enterprise Edition</Edition>
    <Version>10.51.2500.0</Version>
    <Clustered>No</Clustered>
  </DiscoveryInformation>
  <DiscoveryInformation>
    <Product>Microsoft SQL Server 2008 R2</Product>
    <Instance />
    <InstanceID />
    <Feature>Management Tools - Complete</Feature>
    <Language>1040</Language>
    <Edition>Enterprise Edition</Edition>
    <Version>10.50.1617.0</Version>
    <Clustered>No</Clustered>
  </DiscoveryInformation>
  <DiscoveryInformation>
    <Product>Microsoft SQL Server 2008 R2</Product>
    <Instance />
    <InstanceID />
    <Feature>Client Tools Connectivity</Feature>
    <Language>1040</Language>
    <Edition>Enterprise Edition</Edition>
    <Version>10.50.1617.0</Version>
    <Clustered>No</Clustered>
  </DiscoveryInformation>
  <DiscoveryInformation>
    <Product>Microsoft SQL Server 2008 R2</Product>
    <Instance />
    <InstanceID />
    <Feature>Client Tools Backwards Compatibility</Feature>
    <Language>1040</Language>
    <Edition>Enterprise Edition</Edition>
    <Version>10.50.1617.0</Version>
    <Clustered>No</Clustered>
  </DiscoveryInformation>
  <DiscoveryInformation>
    <Product>Microsoft SQL Server 2008 R2</Product>
    <Instance />
    <InstanceID />
    <Feature>Client Tools SDK</Feature>
    <Language>1040</Language>
    <Edition>Enterprise Edition</Edition>
    <Version>10.50.1617.0</Version>
    <Clustered>No</Clustered>
  </DiscoveryInformation>
  <DiscoveryInformation>
    <Product>Sql Server 2008</Product>
    <Instance />
    <InstanceID />
    <Feature>Integration Services</Feature>
    <Language>1040</Language>
    <Edition>Enterprise Edition</Edition>
    <Version>10.51.2500.0</Version>
    <Clustered>No</Clustered>
  </DiscoveryInformation>
</ArrayOfDiscoveryInformation>

Riccardo