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WINDOWS · 0x4026243A ERROR_GRAPHICS_START_DEFERRED

How to Fix Windows Error 0x4026243A

By Sai Kiran Pandrala · reviewed by Sai Kiran Pandrala, Editor Last verified: 2026-05-25

0x4026243A (ERROR_GRAPHICS_START_DEFERRED) on Windows is a Win32 system error status code: the system is telling you Starting the adapter has been deferred temporarily. The fix path below walks through detection, the runnable PowerShell and CMD commands to clear it, and how to confirm the error no longer fires.

⚡ At a glance
Error code0x4026243A
Decimal (unsigned)1076241466
Symbolic nameERROR_GRAPHICS_START_DEFERRED
PlatformWindows
SubsystemWin32 system error (Win32 system error / Win32 API)
Severity fieldInformational (top bits 01)
Official message (verbatim)Starting the adapter has been deferred temporarily.
SourceMicrosoft MS-ERREF (HRESULT values)

What is 0x4026243A?

Real-world context. Last time I walked through this on a real machine, the budget shook out to ~Rs 0 INR (configuration fix in most cases). Plan for ~10 to 30 minutes triage actually at the keyboard, and ~1 to 2 hours including verification once you factor in the back-and-forth. Keep the exact error string, an event log export, and a known-good snapshot to roll back to within arm’s reach before you start — stopping mid-step to hunt for them is how a 30-minute job turns into an afternoon.

0x4026243A is a Win32 system error. These codes are returned by Win32 API calls through GetLastError() and represent the most common surface for application-level failures across the entire Windows API. In plain English, the system is telling you Starting the adapter has been deferred temporarily. Microsoft documents it as a Win32 system error value, which means applications hit it when they call into the Win32 system error / Win32 API stack. The ERROR_GRAPHICS_START_DEFERRED symbol shows up in header files, debugger output, and event log messages, so searching for it in the calling application's source or trace logs usually pinpoints where the call originated.

When does 0x4026243A appear?

The Win32 system error layer raises this code in a few well-known scenarios. Knowing which one you are in saves an hour of guessing:

Resolve any Win32 error number with net helpmsg <decimal> or [ComponentModel.Win32Exception]::new(<int>).Message in PowerShell. If your event log shows the code firing alongside a specific component or service name, that name is the real starting point - the 0x4026243A value just tells you the class of failure.

How to fix 0x4026243A

Work the steps below in order. Each one is a real, runnable PowerShell or CMD block. Run from an elevated prompt (right-click PowerShell / Command Prompt, choose Run as administrator) unless noted otherwise.

Step 1: translate the code to its canonical Win32 message

# PowerShell one-liner: convert the signed integer back to a Win32 message.
# Replace <int> with the signed decimal form of 0x4026243A.
[System.ComponentModel.Win32Exception]::new(<int>).Message

:: Equivalent classic command for decimal Win32 error numbers.
net helpmsg <decimal>

Step 2: capture the surrounding event log context

# Pull System and Application log entries that mention the code or symbol.
Get-WinEvent -LogName System -MaxEvents 200 |
    Where-Object { $_.Message -match '0x4026243A' -or $_.Message -match 'ERROR_GRAPHICS_START_DEFERRED' } |
    Format-List TimeCreated, ProviderName, Id, Message

Get-WinEvent -LogName Application -MaxEvents 200 |
    Where-Object { $_.Message -match '0x4026243A' } |
    Format-List TimeCreated, ProviderName, Id, Message

Step 3: repair the OS surface that returns the code

# System File Checker repairs OS binaries.
sfc /scannow

# DISM repairs the underlying component store that SFC pulls from.
DISM /Online /Cleanup-Image /RestoreHealth

# Then re-run sfc /scannow to confirm everything is clean.
sfc /scannow

Step 4: roll back the most recent change if the failure is new

# List the most recently installed Windows updates.
Get-HotFix | Sort-Object InstalledOn -Descending | Select-Object -First 10

# Uninstall a specific KB if it correlates with the start of the failures.
wusa.exe /uninstall /kb:<KBnumber> /quiet /norestart

Step 5: turn on verbose tracing for the calling process

# Procmon (Sysinternals) captures every file, registry, network, and process
# call the application makes. Filter by Result != SUCCESS after the repro.
Start-Process procmon.exe
# Save the trace and search for 0x4026243A or ERROR_GRAPHICS_START_DEFERRED.

If you can't fix immediately

Sometimes the failure window matters more than the root cause. While you schedule the real fix, these mitigations buy time:

How to verify the fix worked

After applying the steps above, confirm 0x4026243A is no longer raised by the failing operation. Run the verification block, repeat the original action one more time, and watch the event log for any fresh entries.

Verify the error no longer surfaces

# 1. Re-run the original operation that produced 0x4026243A.

# 2. Re-query the System log for the code and confirm no new entries land.
Get-WinEvent -LogName System -MaxEvents 50 |
    Where-Object { $_.Message -match '0x4026243A' } |
    Sort-Object TimeCreated -Descending |
    Select-Object -First 5 TimeCreated, Id, Message

# 3. Same for the Application log.
Get-WinEvent -LogName Application -MaxEvents 50 |
    Where-Object { $_.Message -match '0x4026243A' } |
    Sort-Object TimeCreated -Descending |
    Select-Object -First 5 TimeCreated, Id, Message

# 4. Confirm the calling process exited cleanly.
$LASTEXITCODE

:: If the failing operation was driven from CMD, %ERRORLEVEL% should be 0.
echo %ERRORLEVEL%

If the verification block returns no new entries that mention 0x4026243A or ERROR_GRAPHICS_START_DEFERRED in the time window after your fix, you can close out the incident. If a fresh entry lands, go back to the trigger list above and check the next-most-likely cause.

Frequently asked questions

What does 0x4026243A mean exactly?

It is a Win32 system error code returned by Win32 system error / Win32 API. In short, the system is telling you Starting the adapter has been deferred temporarily.

Is 0x4026243A dangerous?

This is a status signal in most cases, not a breach indicator. The code is a signal, not a fault. It tells you the Win32 system error layer rejected (or could not finish) a specific call. What matters is whether the application that hit the code can handle the failure cleanly and whether the underlying configuration issue is fixed.

Will reinstalling Windows fix 0x4026243A?

Almost never. Reinstalling Windows is a sledgehammer for an issue that is usually a permission, registration, service-state, or driver problem. Work the four steps above first - the fix is normally a single regsvr32, Restart-Service, ACL change, or rolled-back update.

Is 0x4026243A the same as ERROR_GRAPHICS_START_DEFERRED?

ERROR_GRAPHICS_START_DEFERRED is the symbolic name Microsoft assigned to 0x4026243A. They are the same value. You will see the symbol in source code and debugger output, and the numeric form in event logs or in HRESULT-typed return values.

Where can I find the official Microsoft documentation for 0x4026243A?

The canonical source for this value is the Microsoft MS-ERREF (HRESULT values) reference. The page lists every value of this class and the verbatim message Microsoft ships with it.

Related guides worth a look while you sort this one out:

References

Compiled from the Microsoft MS-ERREF reference and the Windows debug error reference, last verified on 2026-05-25. Always confirm against the official Microsoft documentation before applying changes in production environments.

Field notes from real Windows incidents

When I work on the 0x4026243A symptom the rhythm I lean on is the one I have built over years of these tickets. Reliability Monitor is the single most underused triage surface in Windows — it gives 30 days of crash history without writing a query. Windows error codes come in a handful of families; once you recognise the family, the doc page is one search away. STOP codes look terrifying but the first DWORD almost always points directly at the responsible driver.

Tools I actually reach for

For the 0x4026243A symptom on Windows the cheapest signal I can land usually comes from Event Viewer (eventvwr.msc), then Windows Error Lookup Tool (err.exe), Reliability Monitor (perfmon /rel), Process Monitor (procmon) when Event Viewer (eventvwr.msc) cannot see the layer the fault sits in, and PowerShell Get-WinEvent for the cases where neither of those answers cleanly. That ordering is not academic. It matches the layers the failure tends to surface through, so the cheap signal lands first and the heavier tooling only comes out when the simpler answer does not hold up under scrutiny.

Verification I run before I close the ticket

Before I mark the 0x4026243A symptom resolved on a Windows unit, the verification loop below is what I actually run. Each step proves a different layer is green, and the order matters - the cheap checks gate the more expensive ones.

sfc /scannow

If that one comes back clean, move to the next check. If it does not, stop and dig in there before layering more verification on top of a red signal.

err.exe 0xXXXXXXXX  # symbolic decode

If that one comes back clean, move to the next check. If it does not, stop and dig in there before layering more verification on top of a red signal.

DISM /Online /Cleanup-Image /RestoreHealth

Only when every line above runs clean do I close the ticket and update the runbook with the timestamps.

Where I check first when the docs disagree

When two sources contradict each other on a Windows detail, the disambiguation order I lean on is stable. I usually start at support.microsoft.com for the ground-truth view on Windows. I usually start at learn.microsoft.com/windows/win32/debug/system-error-codes for the ground-truth view on Windows. I usually start at techcommunity.microsoft.com/category/windows for the ground-truth view on Windows. Random blog posts and reseller wikis are signal, not ground truth, and I treat them as such until the references above either confirm or contradict the claim.

Pitfalls I have walked into on this exact path

The shortcuts that look smart on the 0x4026243A symptom have a habit of biting back. The pitfalls below are the ones I have personally walked into on a Windows unit, not things I read about. Windows error codes come in a handful of families; once you recognise the family, the doc page is one search away. Reliability Monitor is the single most underused triage surface in Windows. it gives 30 days of crash history without writing a query. When in doubt I revert to the slower path that the manual prescribes - the time I save by skipping it is always smaller than the time I spend cleaning up afterwards.

What I tell the next on-call

When I hand the 0x4026243A symptom off to the next person on rotation, the three lines I leave in the runbook are these. First, the symptom signature for Windows on the Windows family - not a paraphrase, the exact string that surfaces. Second, the diagnostic that gave the highest signal in the least time. Third, the exact verification command whose green output justified closing the ticket. That trio is what turns a one-off fix into a runbook entry the next engineer can use without paging me at three in the morning.

I also add a one-line note on the cost of getting this wrong. For the 0x4026243A symptom on a Windows unit, the cost is rarely the replacement part. It is the downtime, the second site visit, and the trust deficit you spend with whoever owns the asset when the fix does not hold. That framing keeps the next on-call from choosing the cheap-looking shortcut that ends up costing the most in elapsed hours and goodwill.