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Our support articles address the most common issues we deal with “in the field” about Windows, Microsoft 365 Business, web server support, and web design. Click open the accordion sections below to look for self-serve help. Often, issues rely on a knowledge of IT concepts and language. Also, Microsoft, cPanel, and other software houses featured in these articles often update practice notes and procedures without notice. We review our pages regulalry, however you are advised to contact us for further help about these articles especially concerning issues around sovereign account identity and Multifactor Authentication (MFA).

Microsoft 365 configuration and user tips and tricks
  1. Why Professional IT Support Still Matters in the Age of AI
  2. How to Use Folder Color Coding in Microsoft 365 to Boost Productivity
  3. How to Set Up a Microsoft 365 SharePoint Site for a Small Business
  4. OneNote Sync Troubleshooting
  5. Create a Microsoft 365 Exchange Online connector
  6. Configure SPF, rDNS, DKIM, and DMARC for email
  7. How to Fix a Corrupted OneDrive DLL Using a OneDrive Reset

The following articles can be found using <Search> or scrolling through our list of articles. Procedures may have changed since and therefore this content is either being eidted or deprecated. So, although we are editing this content, you might still find useful information to help with issues.

  1. – Exchange Online – room and equipment resources
  2. – Reset Office 365 password expiration policy
  3. – Exchange Email – EOP antivirus/spam
  4. – Exchange Online Protection – EOP
  5. – Microsoft 365 Exchange Email – data leakage & loss protection
  6. – Microsoft ActiveSync

Microsoft OneDrive DLL Error: How to Fix a Corrupted DLL Using a OneDrive Reset

Microsoft OneDrive DLL Error: How to Fix a Corrupted DLL Using a OneDrive Reset

A client recently reported a startup error on a Windows 11 laptop. The message referenced a corrupted DLL file within the Microsoft OneDrive installation directory:

C:\Users\*user-name*\AppData\Local\Microsoft\OneDrive\Codecs\8.1.2\acutil-60.dll

The error stated that the DLL was either not designed to run on Windows or contained an error. Following additional restart attempts, the client believed Windows itself had become unusable.

OneDrive dll error

Seemingly terminal error messages of this kind are not usually a fatal error message concerning Windows operating system or hardware.

At first glance, this appeared to be a serious operating system failure. However, investigation showed that the issue was most likely a corrupted OneDrive component rather than a broader Windows or hardware problem.

Click open the headers below to learn how to interpret a DLL error message using this case study for repairing a corrupted OneDrive DLL. Support options are available for professional assistance. You can return to our Index of Articles by clicking here.

Understanding the OneDrive DLL Error

DLL files, or Dynamic Link Libraries, contain code and resources used by Windows applications. If one of these files becomes corrupted, Windows may generate a Bad Image error during startup or when launching an application.

A corrupted DLL can occur for several reasons:

  • Interrupted software updates
  • File system corruption
  • Unexpected shutdowns
  • Third-party security software interference
  • Storage issues affecting application files

Although the error appeared severe, there was no immediate evidence that Windows itself was damaged.

First Rule: Identify the Application

When you receive a DLL error message, put concern to one side and first determine which application owns the file before taking further action.

In this case, the directory structure clearly indicated Microsoft OneDrive:

C:\Users&lt;username>\AppData\Local\Microsoft\OneDrive

This meant troubleshooting could focus on OneDrive rather than immediately considering a Windows rebuild or hardware replacement.

As a general rule, DLL files found after:

AppData\Local

usually belong to user-installed applications or application components rather than the operating system itself.

The Fix: Reset OneDrive

Microsoft includes a built-in reset mechanism for the OneDrive client.

Using Command prompt, or even by typing <run> in the Windows Search tool on the Windows task bar, this command, the following command can be performed.

%localappdata%\Microsoft\OneDrive\OneDrive.exe /reset

The easiest way to run this command is:

  1. Press Windows + R
  2. Paste the command
  3. Press Enter
onedrive dll error fix

Enter Use Windows search to open the utility, and enter the code.

The command stops the OneDrive client, rebuilds local configuration files, clears cached information and restarts the synchronisation engine. Windows may take a minute to execute the reset stages, so we allowed a short while for the computer to process instructions. Depending on your instance of Windows, this command might need modifying. Contact us for help in this case. 

In this case, the result was immediate. The client regained normal access to Windows, and the OneDrive DLL error disappeared. This strongly suggested that the underlying problem was a corrupted OneDrive component rather than a damaged Windows installation.

Additional Checks After Fixing the Error

Even when a DLL reset resolves the issue, it is important to verify that deeper corruption does not exist elsewhere.

Open an elevated Command Prompt (use Run in the first instance) and run:

sfc /scannow

System File Checker scans protected Windows files and replaces incorrect versions with known good copies.

If corruption is reported, run:

DISM /Online /Cleanup-Image /RestoreHealth

This command repairs the Windows component store used by System File Checker.

Check the Disk for Problems

Whenever a corrupted DLL is discovered, it is worth checking the storage device for underlying faults.

Run:

chkdsk C: /f

If prompted, schedule the scan for the next restart.

For a more comprehensive examination:

chkdsk C: /f /r

This scans for bad sectors and attempts recovery where possible.

Although the OneDrive reset resolved the immediate issue, disk diagnostics remain an important step because file corruption can sometimes be an early sign of storage problems.

Why This Works for Other Microsoft DLL Problems

This case involved OneDrive, but the same troubleshooting principles apply to many Microsoft applications including:

  • Outlook
  • Teams
  • OneNote
  • Microsoft 365 Apps
  • Edge
  • Windows components

When a DLL error references a file within an application’s own folder structure, a repair, reset or reinstall of that application is often more effective than making direct changes to the DLL itself.

Downloading replacement DLL files from third-party websites is strongly discouraged. These files may not match the installed software version and can introduce security risks.

Instead:

  1. Identify the owning application.
  2. Use the application’s repair or reset function.
  3. Run SFC and DISM if required.
  4. Perform a disk health check.
  5. Reinstall the application only if the problem persists.
Summary

This case demonstrates that not every DLL error indicates a failing computer.

A startup error referencing a corrupted OneDrive DLL initially appeared to be a potentially serious Windows failure. In reality, resetting OneDrive reset restored normal operation within minutes.

For IT professionals and home users alike, the key lesson is straightforward: identify the application responsible for the DLL, use the application’s repair tools first, and then verify overall system health with SFC, DISM and CHKDSK.

In many cases, that approach resolves the issue without requiring a Windows reinstall, profile rebuild or hardware replacement.

Key Takeaway

If you encounter a OneDrive DLL Error, start by resetting OneDrive using:

%localappdata%\Microsoft\OneDrive\OneDrive.exe /reset

Then follow up with SFC, DISM and CHKDSK checks to confirm that the corruption was isolated and not part of a larger storage or operating system issue. This simple process can save hours of troubleshooting and quickly return a Windows PC to normal operation.

Comstat provides independent advice on business IT choices that reduce risk, protect continuity, and support long‑term growth. If you need help managhing email, please get in touch, or use our contact page to organize an appointment which suits your timetable. You can return to our Index of Articles by clicking here .

Microsoft Entra Passkeys: Why Microsoft Is Retiring SMS Authentication and What You Need to Do

Why Microsoft Is Retiring SMS Authentication and What You Need to Do

Microsoft Entra Passkeys are being enforced for business users in ealry 2027. This significantly reinforces account security at a time when phishing attacks and malicious intrusion is mushromming. Microsoft-provided SMS and voice authentication for Microsoft Entra ID will retire on 1 February 2027, with passkeys becoming the preferred authentication method.

If you are a Micrsoft 365 tenancy owner you need to be ready for this change. For instance, business owners may need to help staff update their sign-in routine. Recently, some users who only consider themselves Microsoft account holders have received notifications about this as well. This has led to understandable confusion about who is affected and whether any action is required.

The good news is that the change is straightforward once you understand the difference between a Microsoft account and a Microsoft Entra tenant. Also, this article will help you understand how you can determine if you need to action anything if you do not believe you are affected by this.

Click open the headers below to learn more about how Microsoft Entra Passkeys to prepare for Microsoft’s new credential system. Support options are available for professional assistance. You can return to our Index of Articles by clicking here.

What Are Microsoft Entra Passkeys?

A passkey is a modern authentication method designed to replace traditional passwords and SMS verification codes.

Instead of receiving a text message or entering a password, users authenticate using a trusted device such as:

  • Windows Hello
  • Face recognition
  • Fingerprint authentication
  • A security key
  • A mobile device linked to the account

Microsoft Entra passkeys are classed as phishing-resistant authentication. This means they are far more difficult for attackers to steal, intercept, or misuse than passwords, voice verification, or SMS codes.

As cybercriminals increasingly rely on phishing campaigns, Microsoft and other major technology companies are moving towards authentication methods that do not depend on passwords or mobile text messages.

Why Is Microsoft Retiring SMS Authentication?

SMS authentication has served organisations well for many years, but it has several weaknesses.

Attackers can:

  • Trick users into revealing authentication codes
  • Conduct SIM-swap attacks
  • Intercept messages in some circumstances
  • Use social engineering to bypass protections

Passkeys solve many of these problems because authentication occurs directly between the device and Microsoft’s identity platform.

From Microsoft’s point of view, Microsoft Entra passkeys provide a much stronger security baseline for business and organisational accounts. The company is therefore encouraging all affected users to transition before the retirement date.

Who Is Affected?

If you manage a Microsoft 365 Business tenant, Microsoft Entra tenant, Azure subscription, or related cloud services, you should assume that this announcement applies to you.

Even if you already use Microsoft Entra Passkeys using Microsoft Authenticator, you might have some users who still rely on SMS-based multi-factor authentication (MFA). Often, this is because handsets are too old for tools like Microsoft Authenticator to operate on. Those users will need to migrate to a phishing-resistant authentication method before February 2027.

If you only use services such as:

  • Outlook.com
  • Hotmail
  • Xbox
  • OneDrive Personal
  • Microsoft 365 Personal
  • Microsoft 365 Family

you might not be affected.

However, there is an important exception.

Some people created Microsoft cloud services years ago and unknowingly obtained a Microsoft Entra tenant in the background. Microsoft may therefore send administrative notifications to accounts that appear to be ordinary Microsoft accounts.

How to Check If You Have a Microsoft Entra Tenant

If you receive one of these notifications and are unsure whether it applies to you, perform a simple test.

Visit the Microsoft Entra Admin Centre:

Sign in using the email address that received the notification. You will usually experience one of three outcomes:

Option 1: No Access to a Tenant

If Microsoft reports that you do not have access to a tenant or administrative resources, the notification is unlikely to require any action.

In most cases, personal Microsoft account users can safely disregard the message.

Option 2: Access to a Tenant

If the portal opens and displays tenant information, directory details, or administrative options, Microsoft considers you to have responsibility for an Entra environment.

You should review your authentication methods before the retirement deadline.

Option 3: A Forgotten Trial or Subscription

It is surprisingly common to discover an old Azure trial, Microsoft 365 test tenant, or developer environment that was created years ago.

If one exists, determine whether it is still required. If it remains in use, the transition to Microsoft Entra passkeys should be planned.

What Should You Do?

If you own a Microsoft 365 tenancy, or if your email addressis implicated in Microsoft services listed above which list you in Microsoft Entra, you should begin preparations well before 2027. Recommended actions include:

  1. Review authentication methods currently in use.
  2. Identify users relying solely on SMS or voice authentication.
  3. Check that mobile devices are able to install Microsoft Authenticator app
  4. Enable Microsoft Entra passkeys where appropriate.
  5. Encourage Windows Hello or FIDO2 security key adoption.
  6. Communicate upcoming changes to users.
  7. Test authentication workflows before enforcement begins.

Early adoption reduces the risk of support calls and avoids users being surprised by registration prompts later.

 

Benefits Beyond Compliance

The move to Microsoft Entra passkeys is not simply another administrative requirement. Identity theft is increasing sinificantly and improved security is not just for business users. In fact, if you are a consumer user and you believe your security is satisfactory even with SMS Authentication, you are in a high risk target group.

Imagine waking up one morning to discover that a malicious party has appropriated control of your online retail and banking accounts, and that they are using your identity to buy expensive luxury watches at auction houses for which payment is intended to be drawn against your savings? If this sounds like fiction, think again. This is just one such situation we have dealt with this year, and the trend is escalating.

Microsoft 365 users enjoy Microsoft Entra ID passkeys that offer:

  • Better protection against phishing attacks
  • Reduced password-related support requests
  • Improved user experience
  • Faster sign-in processes
  • Stronger regulatory compliance

In practice, passkeys represent one of the most significant improvements to account security since multi-factor authentication became mainstream. Even if you are not a Microsoft 365 user, we suggest you think very carefully about improving secured access to email. Once an identity is stolen. building a new identity means significant costs and trouble.

Summary

Microsoft Entra passkeys are becoming the future of authentication across Microsoft’s cloud services. While many personal Microsoft account users will not need to take action, anyone responsible for a Microsoft 365 or Entra environment should review their authentication strategy now.

If you receive a notification about the retirement of SMS authentication, the first step is simple: sign in to the Microsoft Entra Admin Centre and determine whether you have access to a tenant. Once you know your status, you can take the appropriate action long before Microsoft’s February 2027 deadline.

Comstat provides independent advice on business IT choices that reduce risk, protect continuity, and support long‑term growth. If you need help with improving your ID security, please get in touch, or use our contact page to organize an appointment which suits your timetable. You can return to our Index of Articles by clicking here .

Windows 11 System Restore: How to Create and Manage Restore Points Safely

What Is Windows 11 System Restore?

Windows 11 System Restore is a built‑in recovery feature that protects your PC by taking snapshots of crucial system files, settings, drivers, and registry entries. These snapshots are called restore points. If something goes wrong after installing software, drivers, updates, or after a malware incident, System Restore allows you to roll your computer back to a previous stable state.

System Restore does not delete your personal documents, photos, or emails. Instead, it focuses on parts of the system that can break Windows. Because of this, it is one of the simplest and most powerful safety nets for everyday users.

System Restore is especially valuable when reacting quickly to malware or virus infiltration. If the infection is recent, restoring the system to a point before the attack can help reverse harmful changes and reduce damage. While it is not a replacement for anti‑malware tools, it adds an essential extra layer of protection.

Click open the headers below to learn more about how to enable System Restore. Support options are available for professional assistance. You can return to our Index of Articles by clicking here.

How You Can Check That System Restore Is Enabled

Many users assume Windows 11 System Restore is switched on automatically. Often, it is not. Some OEMs ship devices with the feature disabled, and major upgrades can also turn it off. For anyone who is not IT‑literate, the most important advice is simple:

Check once a month that System Restore is enabled

This is how to verify System Restore is operational:

  1. Press Windows Key and type restore point
  2. In System Properties, open System Protection tab

In the screenshot below, see how system restore status is enabled. If protection is off, Windows cannot create restore points automatically — and you won’t be able to roll back when things go wrong. 

system restore control panel

System Restore control panel allows you to enable services, check status, and restore Windows’ last known working state

 

 

How to Create a Restore Point in Windows 11

Configure automtatic restore point creation

Creating a restore point in Windows 11 System Restore takes less than a minute and can save hours of recovery work and consequential labour costs. This is how to configure System Restore:

  1. Press the Windows Key and type restore and click <enter>
  2. In the System Properties control panel, click open System Protection
  3. In the System Properties window, select your primary drive (C:) by clicking it to highlight row
  4. Click <Configure>
  5. Ensure Turn on system protection is selected
  6. Confirm that the Max Usage slider has at least 2–5% allocated

configure automatic restore point

Create a restore point manually

 You can also create a system restore point before major changes like:

  • Driver installations
  • Registry modifications
  • Software that affects system behaviour
  • Windows feature updates

You can do this by navigating to System Restore control panel described above and clicking the <create> button.

create a manual restore point

 

How to recover a Restore Point

Sometimes, a Windows corruption or a malware infiltration needs correcting. Especially if this has happened in the last 2-3 days, you can use System Restore to reinstate Windows to the state it was in before Windows system files were compromised. If your buffer is large enough, you may be able to use earlier system Restore Points, but bear in mind that using old restore points might undo good updates that have been implemented, too.

To restore your system:

  1. Return to the same System Protection window as described above
  2. Click System Restore
  3. Choose your restore point
  4. Follow the on‑screen instructions (see screenshot below)

recovering ra restore point

Best Practices for Using System Restore

To get the most from System Restore, consider these simple tips:

  • Keep it enabled: Check periodically that protection has not been turned off
  • Create manual restore points before major system changes
  • Act fast after malware signs: restoring early increases the chance of reversing harmful changes that antivirus/anti-malware software could aggravate further
  • Do not rely on it as your only backup: use OneDrive, external drives, or full‑system imaging for complete protection.

Computer Life expectancy affects recovery options

In larger businesses, the average replacement cycle for computers used for desktop productivity is 3-5 years. Self-employed users demand much more from their computers. This kind of profile is more in line with a corporate power user, whose computers are replaced at 2.5 – 4 years. This is because this kind of useage imposes a heavier computational duty cycle on hardware. While System Restore and Windows Recovery can help mitigate running costs, these kinds of tools cannot perform when hardware has failed or is reaching the end of its duty cycle.

Hot Tip: System Restore is only designed to resinstate a last known working state of your Windows systems files. System Restore does not manage files or user data.System Restore is often more capable of resolving malicious infiltration that antivirus software. However, malicious attacks cause unpredictable consequences which may mean that you still have to resort to your recovery drive (see this article) to correct a serious Windows system problem.

Summary

Windows System Restore is one of the most valuable recovery features built into the operating system. When enabled, it can quickly repair software problems, undo bad updates, and help mitigate early‑stage malware infections. For everyday users and professionals alike, this simple tool offers powerful peace of mind.

If you need help configuring restore points across multiple devices or want deeper protection for high‑value systems, please get in touch, or use our contact page to organize an appointment which suits your timetable. You can return to our Index of Articles by clicking here .

PC Power Management Explained: Restart vs Shut Down and the Best Daily Power Habits

Restart vs Shut Down and the Best Daily Power Habits

Windows users—and even IT professionals—are unsure how PC power management really works. Two areas cause the confusion: the difference between Restart and Shut Down, and whether you should shut down or sleep your PC at the end of the day. These actions might look similar, but they behave very differently under the hood.

This guide brings both topics together in a simple, practical way to help users of all experience levels take better care of their computers while keeping performance stable and power use efficient.

Click open the headers below to learn more about how best to improve hardware performance with Microsoft’s tools for Windows. You can return to our Index of Articles by clicking here.

Restart vs Shut Down: Why They Are Not the Same

Most people assume that shutting down the PC is the most complete way to reset Windows. Surprisingly, that isn’t true. Thanks to a feature called Fast Startup, a normal shutdown does not clear everything from memory. Windows saves part of the system state to disk so it can boot faster the next time.

This means that using Shut Down often preserves the very problem you might be hoping to fix with a re-boot, whether that’s a misbehaving driver, a glitchy USB device, or a stubborn update. In contrast, Restart always performs a full reset of the Windows kernel, which clears system memory and loads all drivers from scratch.

So, if a user wants a “clean start” to flush out an issue, Restart is the correct choice. Shut down is still useful, but it is not a troubleshooting tool. Understanding this distinction is important, and it helps prevent wasted time and unnecessary frustration.

Daily Habits: Should You Shut Down or Just Sleep the PC?

When the workday ends, many users wonder what to do next: shut down, sleep, or something else? Advice varies wildly, and myths are common. Some people argue that turning the PC on and off wears out hardware. Others insist that leaving it on wastes energy and shortens component life. The truth lies somewhere between the two.

Modern PCs—especially those with Solid State Drives (SSDs)—are designed for frequent power cycling. SSDs do not suffer from mechanical wear caused by spin‑up or spin‑down, which used to be a concern with older hard drives. Components such as processors and RAM also handle start‑stop cycles with ease.

On the other hand, sleep mode is extremely energy‑efficient on modern hardware. A sleeping PC typically uses only a few watts, while allowing you to resume work instantly. This is ideal for office environments where you might take short breaks throughout the day.

Why Microsoft Advises a Policy, Not a Solitary Procedure

A simple rule for good PC power management is:

  • Use Sleep during the workday for short or medium breaks
  • Use Shut Down at the end of the day if you prefer a fully powered‑off system
  • Use Restart whenever the system is unstable or sluggish, or after updates

This approach balances energy conservation, hardware longevity, and overall system reliability—without relying on outdated advice from the mechanical‑hard‑drive era.

Summary

Understanding the difference between Restart, Shut Down, and Sleep helps users make better choices that keep Windows stable and hardware healthy. In modern computing, PC power management is about using each option for its intended purpose:

  • Restart for a true clean start
  • Shut Down for a full power‑off at the end of the day
  • Sleep for convenience and efficiency during regular working hours

Developiong good habits help prevent common issues, improve long‑term performance, and remove the guesswork from everyday PC use. It is true that inexpensive hardware is often built for comparatively limited processor duty cycles in its lifetime, so careful PC power management is especially useful with budget hardware used for critical production jobs.

For more help about improving Windows performance, feel free to get in touch, or use out contact page to organize an appointment which suits your timetable. You can return to our Index of Articles by clicking here