Microsoft.windows.windowsupdate.ruximlog Failed To Start Jun 2026

Corrupted system files can break the Windows Update stack.

In most cases, this error is a that does not cause system crashes or prevent Windows from functioning normally, though it is frequently found alongside other update-related issues. Common Causes microsoft.windows.windowsupdate.ruximlog failed to start

is a common Event Viewer entry, often accompanied by error code 0xC0000035 Corrupted system files can break the Windows Update stack

: An existing instance of the RUXIM session is already running, preventing a new one from starting. This is the most frequent fix

This is the most frequent fix. The task triggering ruximlog often gets stuck in a "queued" or disabled state.

This article explains what ruximlog is, why the error occurs, and provides step-by-step methods to resolve it.

: Corrupt system files can cause this issue. Running the System File Checker tool can help repair any corrupted system files. Open Command Prompt as Administrator and run sfc /scannow .