“The program can’t start because ms98irsock_object.dll is missing from your computer. Try reinstalling the program to fix this problem.”
ms98irsock_object.dll is identified as the MS98IrSock_object Module, associated with Sony Ericsson Mobile Communications AB. The safest repair is to restore the original Sony Ericsson application that installed it, not to download a replacement DLL.
Which fix applies to you
Use the situation that matches what you see:
- The error appears when opening a Sony Ericsson utility: repair or reinstall that application first.
- The error appears immediately after Windows starts: look for a stale startup entry, scheduled task, or shortcut left behind after an uninstall.
- Your antivirus recently detected or quarantined a file: inspect Protection history before reinstalling anything.
- The DLL exists in the application folder but Windows still reports it as missing: a dependency, architecture mismatch, or corrupted installation may be involved.
- The application is old and no longer launches after a Windows upgrade: reinstall it, then test compatibility settings.
- You do not use the Sony Ericsson software anymore: remove the orphaned startup reference instead of restoring the DLL.
- Several unrelated programs fail: check Windows component health with DISM and SFC.
The exact parent product, version, file size, hash, and 32-bit or 64-bit status of this DLL are not established. Do not assume that it belongs in C:WindowsSystem32, C:WindowsSysWOW64, or any other Windows system directory.
What the error actually means
Windows may display several variations:
ms98irsock_object.dll was not foundThe code execution cannot proceed because ms98irsock_object.dll was not foundThere was a problem starting ms98irsock_object.dllThe specified module could not be foundms98irsock_object.dll is either not designed to run on Windows or it contains an error
The named file may be missing, deleted, quarantined, damaged, incompatible with the application, or present while one of its own dependencies is missing. “The specified module could not be found” does not always mean that the named DLL itself is absent.
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This is a third-party application DLL, not a confirmed Windows component or Microsoft runtime. Its presence alone also does not prove that every copy with this name is safe. The path, signature, application that loads it, and installation history matter.
Fix 1: Repair or reinstall the original Sony Ericsson application
This is the most likely fix when the error appears as you start an old phone utility or connectivity program.
Identify the application first
- Note when the error appears.
- Look at the title bar or surrounding message for the executable name.
- Open Task Manager with
Ctrl+Shift+Esc. - Select Startup apps and look for a Sony Ericsson-related entry.
- Open Settings with
Windows+I. - Select Apps, then Installed apps.
- Search for
Sony,Ericsson,Mobile,Phone, or a name matching the executable shown in the error.
On Windows 10, open Settings → Apps → Apps & features instead.
Do not assume that the parent program is a particular Sony Ericsson suite or handset driver. Confirm it from the installed program name, its executable path, or the original installer.
Try the built-in repair option
- In Installed apps, select the relevant program.
- Choose Advanced options if that option is available.
- Select Repair.
- Start the application again.
If there is no Repair option:
- Open Control Panel.
- Select Programs → Programs and Features.
- Select the Sony Ericsson program.
- Choose Change, Repair, or Modify, if offered.
- Complete the installer and restart Windows.
A successful repair normally means the application opens without the DLL message and its phone connection features work as expected. If the installer reports that source files are missing, use the original installation media or installer package rather than searching for the DLL separately.
Reinstall cleanly when repair fails
- Save any needed application settings or phone data.
- Open Settings → Apps → Installed apps.
- Select the relevant Sony Ericsson program and choose Uninstall.
- Restart Windows.
- Reinstall from the original installer, original disc, or trusted vendor-provided media.
- Right-click the installer and select Run as administrator.
- Restart Windows again before testing the program.
If the old installer no longer runs, right-click it, select Properties, open the Compatibility tab, and try a suitable older Windows compatibility mode. Run the installer as administrator. Compatibility mode is a workaround for an obsolete installer, not a substitute for the original files.
Do not mix files from different Sony Ericsson releases. An older DLL copied into a newer installation can create crashes or additional missing-dependency errors.
Fix 2: Check Windows Security quarantine
Antivirus software may remove or quarantine an old phone utility DLL even when the program itself was legitimate. This is especially relevant if the problem began after a security scan, system cleanup, or application update.
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- Open Windows Security from the Start menu.
- Select Virus & threat protection.
- Choose Protection history.
- Review recent actions involving
ms98irsock_object.dllor the Sony Ericsson application. - Open an entry to see its detected path and action.
- Do not restore the file merely because the filename looks correct.
- Confirm that it was inside the expected Sony Ericsson application directory and that the related software came from your original installer or trusted media.
If the file was quarantined and the application is still needed, reinstall the complete application instead of restoring only the DLL. If your security product identifies the file as harmful, leave it quarantined and scan the installer and the computer before proceeding.
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If the software is no longer needed, remove the program and its startup reference rather than restoring an old file.
Fix 3: Check whether the file exists and inspect its location
Finding a copy of the DLL helps distinguish a missing file from a broken dependency.
- Open File Explorer.
- Search for
ms98irsock_object.dllon the drive where the application is installed. - Right-click a result and select Open file location.
- Compare the folder with the executable named in the error.
- Do not copy the DLL into
System32,SysWOW64, the Windows folder, or the application folder from another computer.
An expected location is normally inside the original application’s installation directory or a related vendor directory, but the correct path is not established by the filename alone.
Quick wins for a faster PC:
Repair Windows errors before they cause bigger problemsFix Now →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →For a located copy, open PowerShell and run:
Get-AuthenticodeSignature "C:pathms98irsock_object.dll"
Get-FileHash "C:pathms98irsock_object.dll" -Algorithm SHA256
Replace the path with the actual location.
A valid signature from the expected publisher is useful evidence, but an absent or expired signature does not by itself prove malware. Old software is often unsigned or signed with certificates that are no longer current. An unexpected copy in a temporary folder, user profile, download directory, or Windows system directory deserves further investigation.
Fix 4: Determine whether a stale startup entry is causing the message
If the error appears only during startup and the Sony Ericsson program was already removed, restoring the DLL is usually the wrong repair.
Check Startup apps
- Press
Ctrl+Shift+Esc. - Select Startup apps.
- Look for entries referring to Sony Ericsson, phone connectivity, or the executable shown in the error.
- Right-click the entry and choose Disable.
- Restart Windows.
Disabling an entry is safer than immediately deleting it. If the error disappears and you no longer need the software, uninstall the remaining program from Settings → Apps or Control Panel → Programs and Features.
Check the Startup folders
Press Windows + R, enter:
shell:startup
Press Enter and remove only a shortcut that clearly points to the removed Sony Ericsson application.
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The second folder may require administrator permission.
Check Task Scheduler
- Open Start and search for Task Scheduler.
- Open Task Scheduler Library.
- Review tasks that launch at logon or startup.
- Select a suspicious task and inspect the Actions tab.
- If it points to a removed Sony Ericsson executable or an invalid DLL path, choose Disable.
- Delete it only after confirming that it belongs to the obsolete application.
Do not remove unrelated Microsoft tasks or registry entries based only on a similar name.
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Fix 5: Check 32-bit and 64-bit compatibility
The filename does not reveal whether this DLL is 32-bit or 64-bit. An old phone utility may be a 32-bit application running on 64-bit Windows, and its dependency chain must match that application.
Do not copy a 32-bit DLL into System32 or a 64-bit DLL into SysWOW64. Those folders are not general-purpose DLL storage, and placing a file there does not make an application load it correctly.
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Instead:
- Confirm the application that reports the error.
- Reinstall that application’s original package.
- Install the dependency architecture requested by the application, if its documentation identifies one.
- If the installer offers separate x86 and x64 choices, use the one required by the parent program rather than choosing based only on your Windows edition.
- Test the application again after restarting Windows.
A 32-bit application may require 32-bit dependencies even on 64-bit Windows. Compatibility mode can help an obsolete application, but it cannot correct a mismatched DLL.
Fix 6: Restore a missing dependency
The DLL may be present while another library it needs is missing. Before installing a runtime, check the original application’s documentation or installer for a specific requirement.
Possible Microsoft packages include:
- The supported Visual C++ Redistributable packages, including
VC_redist.x86.exeandVC_redist.x64.exe - The DirectX End-User Runtime Web Installer
- .NET Framework 4.8
Install these only when the parent application or a separate dependency error points to them. None is established as the definitive source of ms98irsock_object.dll.
After installing the required package, restart Windows and launch the original application. If the same error remains, return to repairing or reinstalling the Sony Ericsson application rather than installing more unrelated runtimes.
Fix 7: Update or reinstall the related device driver
A missing DLL can appear alongside a broken phone driver, especially after a system migration, major Windows update, or device change. This step applies only if Device Manager shows a problem or the application cannot detect the phone after the application itself has been repaired.
- Connect the phone only if the software normally requires it.
- Right-click Start and select Device Manager.
- Expand Portable Devices, Other devices, Universal Serial Bus controllers, and any Sony Ericsson-related category.
- Look for a yellow warning icon or an unknown device.
- Right-click the relevant device and select Properties.
- Read the message under Device status.
- Select Driver, then Update Driver.
- Choose Search automatically for drivers if a compatible local or Windows-provided driver is expected.
- If the original vendor package includes a driver, choose Browse my computer for drivers and point to that package.
- Restart Windows and test the application.
If the device remains broken, right-click it in Device Manager, select Uninstall device, restart Windows, and reinstall the original phone software and driver package. Do not uninstall unrelated USB or system devices.
Manually hunting through driver versions can be time-consuming, especially when the old application depends on a particular device package. Outbyte Driver Updater can scan for outdated drivers; its free scan identifies issues, while driver installation is handled by the full version. Reinstalling the original Sony Ericsson program remains the definitive fix when that program owns the missing DLL.
Fix 8: Repair Windows components with DISM and SFC
Windows repair commands are secondary here because they normally do not recreate a third-party Sony Ericsson DLL. They are useful when several unrelated applications have errors or Windows itself appears damaged.
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- Open Start.
- Search for Terminal or Command Prompt.
- Right-click it and select Run as administrator.
- Run:
DISM.exe /Online /Cleanup-Image /RestoreHealth
- Wait for it to finish.
- Then run:
sfc /scannow
- Restart Windows after both commands complete.
Microsoft documents DISM image repair and the System File Checker command.
Success means DISM completes without an unrepaired error and SFC reports that it found no integrity violations or repaired corrupted files. If the commands report corruption but the Sony Ericsson error remains, reinstall the parent application. SFC cannot be expected to restore this vendor DLL.
Repeating SFC and DISM without checking what changed rarely helps. Outbyte PC Repair can scan for system issues; its free scan shows detected problems, while repair is performed by the full version. It is optional, and reinstalling the Sony Ericsson application remains the definitive fix for this file.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Why regsvr32 usually will not fix this DLL
regsvr32 is intended for DLLs that are self-registering COM components. A runtime or support DLL does not become usable simply because it was registered.
Do these 3 things before closing this tab:
1Scan for outdated or missing drivers - takes under a minute2Repair Windows errors before they cause bigger problems3Fix the driver behind crashes, sound loss and screen glitchesUse it only when the original vendor documentation explicitly says that this specific DLL must be registered and the file provides the required registration entry point. Otherwise, commands such as these may produce an entry-point or architecture error:
regsvr32 "C:pathms98irsock_object.dll"
Microsoft’s regsvr32 documentation explains the command and its architecture considerations.
Registration does not restore a deleted file, repair a corrupt installation, or supply missing dependencies. Do not start with it.
Avoid random DLL download websites
Downloading ms98irsock_object.dll from an unrelated DLL repository is risky because:
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- It may come from the wrong Sony Ericsson release.
- Its architecture may not match the application.
- It may have a different dependency chain.
- It may be modified or unsigned.
- The actual problem may be a missing dependency or stale startup reference.
There is no verified current official download location for this individual DLL. Use the original Sony Ericsson installer, original media, or a trusted copy of the complete application package. Do not treat a search result as proof that a download is authentic.
If the application is obsolete
Some Sony Ericsson utilities were designed for older Windows versions and older phone drivers. If you still need the program:
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- Keep a copy of the original installer.
- Uninstall the damaged installation.
- Restart Windows.
- Reinstall from the original media.
- Run the application with administrator privileges if required.
- Test compatibility settings only after reinstalling.
- Check Device Manager for driver errors.
- Avoid replacing individual DLLs from unrelated installations.
If you no longer need the application, remove it and disable its startup task or shortcut. If the original installer cannot be made to run, Microsoft’s Windows recovery options describe System Restore and other recovery methods. System Restore is a last resort and is not guaranteed to recreate the missing file.
Frequently asked questions
Is ms98irsock_object.dll a Windows system file?
There is no evidence that it ships with Windows or belongs in System32 or SysWOW64. It is identified as the MS98IrSock_object Module associated with Sony Ericsson Mobile Communications AB.
Does this file prove that Sony Ericsson PC Suite is installed?
No. The exact parent product is not verified. Confirm the installed application, executable path, or original installer before naming the program.
Should I install Visual C++, DirectX, or .NET?
Only if the parent application’s documentation or another dependency error identifies that package. These Microsoft runtimes are not established as the direct source of this DLL.
What if the DLL is present but the error remains?
The application may be loading a different path, one of the DLL’s dependencies may be missing, or the file may be incompatible or damaged. Repair the complete application and inspect its installation path rather than copying the DLL elsewhere.
Is an unsigned copy malware?
Not automatically. Old software may be unsigned or use an expired certificate. Investigate the file’s location, hash, parent application, and security-product results before deciding.
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Delete it only as part of uninstalling the application or removing a confirmed orphaned installation. If the Sony Ericsson program is still needed, reinstall the complete program instead.
What is the correct fix when the error appears at startup?
Identify the executable, scheduled task, or shortcut requesting the DLL. Reinstall the parent program if it is still needed. Otherwise disable and remove the confirmed orphaned startup reference.
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