Fixes for Issues with Windows R2 / Windows 7 SP1

Fixes for Issues with Windows R2 / Windows 7 SP1

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Hello everyone.

With SP1 almost ready to be available to the general public, I thought I’d send out a quick e-mail with a couple issues we’re seen and their resolutions.

Issue: RSAT tools will not install after installing SP1

Remediation: The new version of the RSAT tools will be released in April. We have content here:

Issue: Error code 0x800f081f (CBS_E_SOURCE_MISSING)

Remediation: This happens because a non-RTM version of the RSAT tools was installed at one point. Content for this is here:

Issue: Error code 0x800f0a12

Remediation: This happens because automount policy is disabled on the system. Documentation on this is located here: and here:

Jeff Hughes
Senior Support Escalation Engineer
Microsoft Enterprise Platforms Support

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  • Error code 0x800f081f (CBS_E_SOURCE_MISSING)

    the steps for the above issue didn't work..... can't update Windows 7 to SP1. It still gives 0x800f081f

  • 0x800f081f (CBS_E_SOURCE_MISSING)

    This solution does not work on Windows 7 x64 Home Premium. Cant install any RSAT Tools there. Pls review the solution.