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Ivan_8 0 Newbie Poster

Esteemed readers
After updating multiple times a server with W2k8R2, the Security Update for .NET KB2894854 becomes available over and over again in WU (control panel). Apparantly it's installed 4.5.52022.

Thanks for your time.

Faithfully,
Ivan

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— short expert summary and a practical checklist that fixes this exact symptom on Windows Server 2008 R2.

KB2894854 is a security update for the .NET Framework (4.5 / 4.5.1) that was released to address an ASP.NET configuration vulnerability; the update exists as separate x86 and x64 packages. (support.microsoft.com)

Why it keeps coming back
Windows Update will re-offer an update when the system’s update-detection thinks the package isn’t fully applied (failed/partial install, only one architecture applied, pending reboot, or a corrupted update cache). The Microsoft troubleshooting guidance for “repeatedly offered” explains this behavior and recommends checking update history and error codes first. (learn.microsoft.com)

Quick verification (on the server)

  • Check Installed Updates (Control Panel → Programs and Features → View installed updates) and Windows Update history.
  • From an elevated shell list the installed hotfixes:
# PowerShell
Get-HotFix -Id KB2894854

# Legacy command
wmic qfe | findstr 2894854

Use those outputs to confirm whether x86 and x64 variants are both present or whether installs are failing. (learn.microsoft.com)

Repair steps (try in order)

  1. If Update History shows failures or the KB is absent for one architecture, download the matching package(s) from the Microsoft Update Catalog and install manually. (catalog.update.microsoft.com)
  2. Reset Windows Update components (stop services, rename SoftwareDistribution and catroot2, restart services). Example:
net stop wuauserv
net stop bits
net stop cryptsvc
ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
ren C:\Windows\System32\catroot2 catroot2.old
net start bits
net start wuauserv
net start cryptsvc

Follow the full Microsoft reset procedure if needed (commands and re‑registration steps). Reboot and check again. (support.microsoft.com)

If the update still reappears after a clean manual install and reset, capture the WindowsUpdate.log and the CBS logs (C:\Windows\WindowsUpdate.log and C:\Windows\Logs\CBS\CBS.log) and look for the KB2894854 error codes — they show why detection/installation is failing. The Microsoft guidance above is the authoritative starting point and covers the typical fixes. (learn.microsoft.com)

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