Microsoft.windows.windowsupdate.ruximlog Failed To Start ✰

If the error appears only once in Event Viewer and does not affect system performance, startup, or Windows Update functionality, you can safely ignore it. Many such errors are benign remnants that cause no real harm.

If you provide the exact command or context where you saw this error, I can give a more precise solution.

The "Microsoft.Windows.WindowsUpdate.RUXIMLog" failed to start error, often accompanied by code 0xC0000035, indicates a non-critical background logging conflict within the Reusable User Experience Interaction Manager component. Resolving this issue typically involves running DISM/SFC scans, resetting Windows Update services, or addressing driver conflicts. For detailed troubleshooting steps from Microsoft, visit Microsoft Support. 

Since last windows update at start of June i have had constant crashes The bugcheck was: 0x00000116 - Microsoft Q&A

The error message Session "Microsoft.Windows.WindowsUpdate.RUXIMLog" failed to start with the following error: 0xC0000035

is a common diagnostic event usually found in the Windows Event Viewer. Microsoft Learn What is RUXIMLog? stands for Reusable UX Interaction Manager

. It is a legitimate Microsoft component, often installed via update

, designed to manage user interactions regarding Windows updates—such as notifications that your version of Windows is reaching the end of service. The

is the event tracing session used to record these activities. Why Does it Fail? The error code 0xC0000035 typically translates to STATUS_OBJECT_NAME_COLLISION

. This means the system tried to start a logging session with a name that was already in use. In most cases, this is a minor conflict that occurs during normal background maintenance and does not indicate a critical system failure or that updates aren't working. Microsoft Learn How to Resolve It

If you aren't experiencing other performance issues, this error can often be safely ignored. However, if you want to clear it, try these steps: Microsoft Learn Reset the AutoLogger Registry Entry: Windows + R , and hit Enter. Navigate to:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\WMI\Autologger Find and delete the Microsoft.Windows.WindowsUpdate.RUXIMLog your computer; Windows will recreate this as needed. Uninstall Microsoft Update Health Tools: Some users find that removing this specific tool from Settings > Apps stops the logging conflict. Run System Repairs:

Use the built-in repair tools to fix potential file corruption: Command Prompt as Administrator sfc /scannow Follow up with DISM /Online /Cleanup-Image /RestoreHealth Windows Update Troubleshooter:

Settings > Update & Security > Troubleshoot > Additional troubleshooters and run the Windows Update Microsoft Learn Further Exploration Read a technical breakdown of how RUXIM functions from Remontka.pro View community discussions on the impact of this error at Microsoft Q&A

Check a security advisory regarding RUXIMLog file management from Are you noticing any actual update failures

, or did you just happen to see this error while checking the Event Viewer

The error message "Session 'Microsoft.Windows.WindowsUpdate.RUXIMLog' failed to start"

is a common Event Viewer entry, often accompanied by error code 0xC0000035

typically stems from a conflict within Windows Update logging components introduced by specific updates like Microsoft Learn What is RUXIM? Reusable UX Integration Manager

) is a Windows 10 component used by Windows Update to manage user interface elements and scan the system. The session is responsible for generating log files to track these activities. Microsoft Learn Why It Fails (Error 0xC0000035) In many cases, the error code 0xC0000035 STATUS_OBJECT_NAME_COLLISION

, meaning the system tried to create a log file or object that already exists. Community reports also suggest the following causes: Microsoft Learn Update Conflicts: Specifically linked to the installation of

, which reportedly replaced older remediation services but may have lacked necessary logging executables in certain update packages. Corrupted Files:

General system file corruption can prevent the session from initializing correctly. Microsoft Learn Recommended Fixes

If your system is running smoothly otherwise, this error can often be safely ignored

as it rarely impacts actual update downloads. However, if you want to clear it, try these steps: Microsoft Learn Run System Repairs:

Use the Command Prompt as Administrator to fix potential file corruption: DISM /Online /Cleanup-Image /RestoreHealth sfc /scannow Clear Windows Update Cache: Stop the update service, delete files in C:\Windows\SoftwareDistribution , and restart the service. Registry Modification:

Some users resolve this by deleting the specific log entry in the registry: Navigate to

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\WMI\Autologger Delete the Microsoft.Windows.WindowsUpdate.RUXIMLog key and restart. Uninstall Health Tools: If present, uninstalling Microsoft Update Health Tools Settings > Apps and restarting has resolved the conflict for some. Microsoft Learn For official troubleshooting, you can also use the Windows Update Troubleshooter provided by Microsoft Support. Microsoft Support Are you seeing any secondary symptoms

like failed updates or slow performance, or just the log error? Startup Error in Event Viewer - Microsoft Q&A

The error "Session 'Microsoft.Windows.WindowsUpdate.RUXIMLog' failed to start" is a common Windows Event Viewer log entry (often Event ID 2). While it looks alarming, it is usually a non-critical logging conflict rather than a system failure. 1. Understanding the Error

What is RUXIM? RUXIM stands for Reusable UX Integration Manager, a component used by Windows Update (specifically related to the PLUGScheduler task) to manage update notifications and diagnostic data.

The Cause (Error 0xC0000035): This specific error code usually translates to STATUS_OBJECT_NAME_COLLISION. In simple terms, the logging service tried to create a log file (like RUXIMLog.001.etl) but found that a file or object with that name already exists, causing the session start to fail. microsoft.windows.windowsupdate.ruximlog failed to start

Context: It is frequently triggered by update KB5001716, which updates Windows Update Service components. 2. Impact Assessment

Typical Behavior: For most users, this error can be safely ignored. It represents a failed attempt to start a telemetry/logging session, but it typically does not prevent Windows from downloading or installing updates.

When to Worry: If this error is accompanied by actual Windows Update failures (e.g., updates stuck at 0%) or frequent system crashes, it may indicate a broader system file corruption. 3. Recommended Troubleshooting Steps

If you want to clear the error from your logs or are experiencing related update issues:

Run System Repairs: Use built-in tools to fix corrupted files that might be interfering with the logging service. Open Command Prompt as Administrator. Run: DISM /Online /Cleanup-Image /RestoreHealth. After that, run: sfc /scannow.

Clear the RUXIM Registry Key: If the error persists, you can manually delete the Autologger entry to force it to reset. Press Win + R, type regedit, and hit Enter.

Navigate to: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\WMI\Autologger.

Find Microsoft.Windows.WindowsUpdate.RUXIMLog, right-click it, and select Delete. Restart your computer.

Standard Update Troubleshooter: Use the Windows Update Troubleshooter found in Settings > System > Troubleshoot to resolve general update service issues.

Are you seeing this error alongside specific update failure codes like 0x80070643, or is it just appearing in your Event Viewer logs? Startup Error in Event Viewer - Microsoft Q&A

The error message "Session 'Microsoft.Windows.WindowsUpdate.RUXIMLog' failed to start"

(often accompanied by Event ID 2 and error code 0xC0000035) typically appears in the Windows Event Viewer. While it sounds alarming, it is generally a benign system notification related to

(Reusable UX Integration Manager), a component used by Microsoft to manage background updates and "update health" tools Understanding the RUXIMLog Error

The error usually triggers when the system attempts to start a logging session for an update process that is either already running or has been superseded. Many users have traced this specific log failure to

, a cumulative update designed to improve Windows Update service components.

Because RUXIM is part of the "Update Health Tools," the error signifies that the diagnostic logging session for these tools couldn't initialize properly. In most cases, this does

impact the actual installation of security updates or the stability of your PC. Common Solutions and Mitigations

If you find the error frequently cluttering your logs or suspect it is causing performance lag, you can try these steps: Run System Repairs System File Checker (SFC)

tools to ensure no core system files are corrupted. In an elevated Command Prompt, run: sfc /scannow DISM /Online /Cleanup-Image /RestoreHealth Reset Update Components

: If updates are failing alongside this error, resetting the Windows Update cache can help. This involves stopping the update services and renaming the SoftwareDistribution Manage Update Health Tools

: Some users have resolved the persistent log entry by uninstalling Microsoft Update Health Tools

from the "Apps & Features" menu, then restarting the computer to allow Windows to reinstall a clean version. Registry Adjustment

: A more advanced fix involves navigating to the registry key

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\WMI\Autologger\RUXIMLog

and deleting it (after backing up the registry), which prevents the system from attempting to start that specific failed session. For the vast majority of users, the

failure is a "ghost" error—a diagnostic session failing to record data for a process that may not even need to run at that moment. Unless your computer is experiencing "soft crashes" or failing to install critical security patches, this error can safely be ignored. step-by-step guide

on how to run the registry fix or reset your update components? Startup Error in Event Viewer - Microsoft Q&A 8 May 2024 —

In the quiet digital bowels of a mid-range corporate laptop named XR-7, a tiny civil war had just begun.

The error appeared not on a screen, but in the Event Viewer—a cold, gray cathedral of logs where system components went to report their successes, failures, and final confessions.

"microsoft.windows.windowsupdate.ruximlog failed to start."

To a human, it looked like gibberish. A typo, perhaps. A forgotten driver. A glitch to be ignored until the next forced restart. If the error appears only once in Event

But to the processes living inside XR-7, it was an obituary.

Ruximlog was not a core service. It wasn't like the Kernel, who wielded raw authority over memory and clock cycles, or like Defender, the paranoid sentinel who scanned every shadow for threats. Ruximlog was smaller. Quieter. A log writer for Windows Update, tasked with recording every failed ping to the update servers, every partial download, every time the user clicked "Remind me later."

Its motto, if it had one, was: "You will never read me, but I must be accurate."

The failure happened at 2:13 AM during a scheduled maintenance window. The trigger was a corrupted delta patch—a piece of code that thought it could fold a security update into origami. It couldn't. When Ruximlog tried to write the error to its own log file, the file was already locked by a phantom handle from a dead session. A paradox. The reporter of failures had itself failed.

First, there was confusion. The Update Orchestrator sent a handshake to Ruximlog. No response. It sent a ping. Still nothing. A minute later, the orchestrator declared the update "Succeeded" out of sheer bureaucratic inertia, lying to the user interface.

The user, a woman named Priya, saw the green checkmark and closed her laptop. She never knew.

Down in the logs, the ghost of Ruximlog lingered. Without it, no one would record the silent corruption of the servicing stack. No one would note that the BITS service had begun leaking memory, or that the TrustedInstaller had started hoarding handles like a dragon with gold. Small failures—the kind Ruximlog used to whisper about—began to multiply.

A week later, Priya’s laptop blue-screened during a video call. The error: CRITICAL_PROCESS_DIED.

A technician reinstalled Windows. The old logs were wiped. The Event Viewer opened a fresh, empty book.

And somewhere, in the cosmic landfill of deleted data, a tiny ghost process finally started. Alone in the void, it wrote its last line to an ocean of nothing.

"Ruximlog started successfully."

The user never saw it. But the machine remembered. It always remembers.

The error "Microsoft.Windows.WindowsUpdate.RUXIMLog failed to start" (often accompanied by Event ID 2 and error code 0xC0000035) is a common background glitch tied to the RUXIM (Reusable UX Integration Manager) component of Windows Update.

In most cases, this error is a "ghost" log failure that does not affect your system's performance or actual update capability and can be safely ignored. However, if you want to clear it from your Event Viewer, What is RUXIM?

RUXIM (specifically RUXIMICS.EXE) is an interaction scheduler that Windows uses to check for update readiness and perform "remediation" tasks to keep the update process healthy. The error usually occurs because a previous update (like KB5001716) created a conflict in how these logs are initialized during startup. How to Fix the Error 1. Delete the Stuck Registry Key

The most effective fix is to remove the specific log session entry from the registry, which forces Windows to recreate it correctly on the next boot. Press Windows + R, type regedit, and hit Enter.

Navigate to: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\WMI\Autologger\Microsoft.Windows.WindowsUpdate.RUXIMLog Right-click the RUXIMLog folder and select Delete. Restart your computer. 2. Reinstall Update Health Tools

Since RUXIM is part of Microsoft's "Update Health" suite, reinstalling these tools can reset the service. Go to Settings > Apps > Apps & Features. Find Microsoft Update Health Tools and select Uninstall.

Restart your PC. Windows Update will automatically reinstall the latest version when it checks for updates next. 3. Clear the Windows Update Cache

If the error persists, corrupted update files might be triggering the log failure. Open Command Prompt as an Administrator.

Stop the update services by typing:net stop wuauservnet stop cryptSvcnet stop bitsnet stop msiserver

Navigate to C:\Windows\SoftwareDistribution and delete everything inside the Download and DataStore folders.

Restart the services by typing the same commands with start (e.g., net start wuauserv). 4. Run System Repairs

Ensure there isn't a deeper file corruption issue by running standard repair tools: Open Command Prompt (Admin) and run: sfc /scannow DISM /Online /Cleanup-Image /RestoreHealth Summary Table Fix Method

The error Microsoft.Windows.WindowsUpdate.RUXIMLog failing to start (often with Event ID 2 and error code 0xC0000035) is typically related to the ReUsable UX Integration Manager (RUXIM), a component Windows uses to manage update-related interactions and system "remediation" tasks.

In many cases, this error is a logging conflict that can be safely ignored if your system is otherwise stable, but it can sometimes signal underlying file corruption or conflicts with specific updates like KB5001716. Recommended Troubleshooting Steps

The "Session 'Microsoft.Windows.WindowsUpdate.RUXIMLog' failed to start" error is a common entry found in the Windows Event Viewer . It is usually associated with Event ID 2 and error code 0xC0000035 (STATUS_OBJECT_NAME_COLLISION). Microsoft Learn What is RUXIMLog? RUXIM stands for Reusable UX Integration Manager

. It is a component of the Windows Update system responsible for: Update Readiness:

Checking if your system is prepared for major feature updates or migrations (e.g., Windows 10 to Windows 11). Interaction Campaigns:

Managing the full-screen notifications or pop-ups Microsoft uses to inform users about OS lifecycle changes. Diagnostics: Logging data via the RUXIMICS.EXE

(RUXIM Interaction Campaign Scheduler) to ensure updates perform properly. Why the failure occurs The specific error 0xC0000035 If you provide the exact command or context

indicates that the system tried to create a logging session that already exists. This often happens during a "race condition" at startup or when the previous session didn't close correctly. Microsoft Learn Non-Critical Nature: On most systems, this is a benign error

. It simply means a log file couldn't be initialized because it was already active. Correlation with BSODs:

While often harmless, if you see this error alongside Blue Screen of Death (BSOD) events or "Kernel-Power" errors, it is usually a of an unstable shutdown rather than the cause. Microsoft Learn How to address it

If your system is running smoothly, this error can safely be ignored. If you are experiencing performance issues, you can try these steps: Run the Update Troubleshooter: Windows Update Troubleshooter to reset the update components. Clear Update Cache:

Sometimes corrupt temporary files cause RUXIM to hang. Manually clearing the C:\Windows\SoftwareDistribution folder can force a fresh start. Check for Disk Space:

RUXIM requires sufficient space to log data and prepare update packages; ensure your primary drive isn't nearly full. Do Not Delete the RUXIM Folder:

Deleting files in the RUXIM directory can permanently break Windows Update and lead to missing security fixes. Microsoft Support Are you seeing this error as part of a Blue Screen or is it just appearing in your Event Viewer RUXIM.EXE - Wilders Security Forums

The error "Session 'Microsoft.Windows.WindowsUpdate.RUXIMLog' failed to start" (often accompanied by error code 0xC0000035) is a common Event Viewer entry. It typically occurs when the Reusable UX Integration Manager (RUXIM) data collector tries to start while another instance or a conflicting kernel session is already active.

In most cases, this error is a benign warning that does not cause system crashes or prevent Windows from functioning normally, though it is frequently found alongside other update-related issues. Common Causes

Session Conflict: An existing instance of the RUXIM session is already running, preventing a new one from starting.

Kernel Logger Conflicts: Errors with the "NT Kernel Logger" or "Microsoft.Windows.Remediation" often appear simultaneously.

Corrupted Update Files: Damaged files in the Windows Update cache can trigger logging failures.

Hardware Conflicts (Rare): In some scenarios, hardware issues like faulty RAM have been linked to broader Event Viewer errors, though this is less specific to RUXIMLog. Recommended Solutions

Run System Repairs: Use standard Windows repair tools to fix corrupted system files that might be interfering with logging services. Open Command Prompt as Administrator. Run sfc /scannow. Follow with DISM /Online /Cleanup-Image /RestoreHealth.

Clear the Windows Update Cache: Forcing Windows to rebuild the update folder often resolves logging errors. Stop the Windows Update service in services.msc.

Navigate to C:\Windows\SoftwareDistribution\Download and delete all contents. Restart the Windows Update service.

Run the Windows Update Troubleshooter: This built-in tool can automatically reset necessary components.

Go to Settings > Update & Security > Troubleshoot > Additional troubleshooters and select Windows Update.

Ignore if Stable: If your PC is not experiencing crashes or "Blue Screen of Death" (BSOD) errors, Microsoft support documents and community experts often suggest ignoring this specific log entry, as it is frequently a reporting glitch rather than a critical failure.

Are you seeing this error alongside specific system crashes or failed updates, or is it just appearing in your Event Viewer?

If the problem persists:

If you are digging through your Windows Event Viewer and have stumbled upon the error message "microsoft.windows.windowsupdate.ruximlog failed to start," you are not alone. This is a relatively common but obscure issue that typically indicates a problem with the Windows Update mechanism or a scheduled task configuration.

While this error often runs silently in the background without noticeable symptoms, it suggests that your system is struggling to execute specific maintenance tasks related to Windows Updates. Ignoring it can potentially lead to failed updates or system slowdowns.

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

Below are the most effective solutions, ranging from quick registry edits to advanced system repairs. Always create a system restore point before proceeding.

Open Services.msc and look for:

In isolation, a failed start error is not dangerous—it is merely an annoyance. However, the presence of microsoft.windows.windowsupdate.ruximlog is a red flag. It indicates that something unverified tried to integrate itself with Windows Update.

While it might just be a leftover from uninstalled junkware, it could also be a signature of adware or a malfunctioning crack/patch for software. Microsoft has no official component named "ruximlog." Therefore, the safest course is to remove it entirely using the registry method combined with a full security scan.

Few things are as frustrating as a mysterious Windows error message that appears seemingly out of nowhere. One such error that has puzzled system administrators and everyday users alike is: "microsoft.windows.windowsupdate.ruximlog failed to start."

This error typically appears in the Event Viewer under Windows Logs > System or Applications and Services Logs, and sometimes pops up as a notification or during Windows Update troubleshooting. The name ruximlog sounds obscure (possibly a telemetry or logging component related to Windows Update resiliency), but the root cause is usually straightforward: a corrupt component registry key, a missing system file, or a deeper Windows Update malfunction.

In this long-form guide, we will break down exactly what this error means, why it occurs, and—most importantly—provide eight proven methods to resolve it permanently.