How to fix Windows application error 0xe0434352?

0xe0434352 is the exception code Windows shows when a program built on .NET crashes on an error its code did not handle. It names no cause by itself, but the program name and the .NET error behind it do. Start by finding which program crashed, then update, repair or reinstall that program.

Facts checked on 16 October 2026. Steps written for Windows 11 (25H2 and 26H2) and Windows 10 22H2.

What exception code 0xe0434352 means

Microsoft explains that 0xE0434352 is the exception code of a CLR exception, the type of exception made by .NET applications. Windows does not know what went wrong inside the program. It only sees that the .NET runtime raised an exception that nobody caught, so it ends the program and reports the code. That is why the window calls it an unknown software exception.

The error window as one reader saw it (the program name in the title and the address change from PC to PC)

RustClient.exe - Application Error
The exception unknown software exception (0xe0434352) occurred in the application at location 0x00007FFBE01B674C.
Click on OK to terminate the program

• The title bar names the program file that crashed. This is the most useful part of the window.
• The location (0x00007FF followed by more digits) is a memory address inside Windows' own code, usually in KERNELBASE.dll. It changes after every restart and does not help you.
• OK only closes the program. The crash has already happened.

Why error 0xe0434352 happens: causes ranked

The real cause is the .NET error type that the matching .NET Runtime event 1026 shows on its Exception Info line. We have no counts of how often each cause occurs. The order below follows the examples on Microsoft's forums and what the code itself means: problems inside one program first, damaged shared parts rarely.

The reader's question above is a typical case of the third row: a program that starts with Windows crashes before the desktop is ready, and the next sign-in may work because the timing is different. Turning that program off at startup stops the window, and updating it fixes the cause.

How to fix error 0xe0434352

Fix 1 takes five minutes and tells you which program crashed and why. Fixes 2 to 4 cover one program, one startup item or one scheduled task. Fixes 5 to 7 are for crashes in several programs. You do not need to do all of them.

Fix 1. Find the program that crashed and its .NET error

5 minutesNo riskEveryone, unless the title bar of the error window already named a program you know.

0xe0434352 is the same code for every .NET crash, so it cannot tell you what to fix. The program name and the error type in event 1026 can.

1. If the error window is still open, write down the file name in its title bar, such as RustClient.exe.
2. Press Win + R, type eventvwr and select OK.
3. Expand Windows Logs and select Application.
4. Look for an Error from the source Application Error (event 1000) at the time of the crash. Its text names the faulting application and shows Exception code: 0xe0434352.
5. Find the .NET Runtime error (event 1026) logged in the same second and open it.
6. Note the name after Application: and the first line that starts with Exception Info:. That line is the real error.
7. Select Copy at the bottom of the event window and paste the text into Notepad for later.

Prefer one command? This lists the last five crashes with code 0xe0434352 and the matching .NET events. Run it in Terminal or Windows PowerShell; reading the Application log needs no administrator rights.

PowerShell: recent 0xe0434352 crashes and .NET Runtime events

Get-WinEvent -FilterHashtable @{ LogName='Application'; ProviderName='Application Error'; Id=1000 } -MaxEvents 50 |
  Where-Object Message -match 'e0434352' | Select-Object -First 5 | Format-List TimeCreated, Message
Get-WinEvent -FilterHashtable @{ LogName='Application'; ProviderName='.NET Runtime'; Id=1026 } -MaxEvents 5 |
  Format-List TimeCreated, Message

• A program you use is named: go to Fix 2.
• A tray tool, launcher or updater you never open yourself: go to Fix 3.
• A program run by a scheduled task or a company tool such as AgentExecutor.exe: go to Fix 4.
• A different program each time: go to Fix 5 and then Fix 6.

How to read every line of event 1026, with the full list of error types: .NET Runtime error 1026.

Fix 2. Update, repair or reinstall the program that crashed

15 to 30 minutesLow riskThe title bar or event 1026 names a program, and the error is a missing file, a wrong version or a bug in its code.

The exception was raised inside that program, so only its own files or a newer version can remove it. A missing or mismatched file comes back with a repair or a clean install.

1. Check the program for an update in its Help or About menu, its launcher, or on the maker's website.
2. If no update exists, press Win + I and open Apps > Installed apps (Windows 10: Apps > Apps & features).
3. Select the three dots next to the program. If Modify or Repair is offered, run it first.
4. If that does not help, select Uninstall and restart the PC.
5. Install the newest version from the maker's own website or store, and start it again.

All ways to remove a program, also from Control Panel: Uninstall a program or app in Windows A Store app has Repair and Reset buttons instead: How to repair or reset an app in Windows A game from Steam or another launcher can check its own files first: How to verify game files in Steam, Epic Games, Xbox app, EA app, Battle.net and GOG Galaxy

Fix 3. Stop the crashing program from starting with Windows

5 minutesNo riskThe 0xe0434352 window appears at every sign-in or shutdown, as in the reader's question, and names a program that starts on its own.

Tray tools, launchers, overlays and updaters start with Windows and can crash before the desktop is ready. Turning one off removes the window at once and tells you for sure which program it was.

1. Right-click Start and select Task Manager.
2. Open Startup apps (Windows 10: the Startup tab).
3. Find the program named in the error window or in Fix 1. The Publisher column helps with unclear names.
4. Select it and select Disable.
5. Restart the PC and sign in. The 0xe0434352 window should not appear.
6. If you need the program, update or reinstall it (Fix 2), then turn it back on here.

Turning off a startup app does not uninstall it. Settings has the same list under Apps > Startup: Stop apps from opening at startup

Fix 4. Check a scheduled task with Last Run Result 0xE0434352

15 minutesLow riskTask Scheduler shows (0xE0434352) in the Last Run Result column, or event 1000 names a program that a task runs.

Task Scheduler shows the exit code of the program the task started. 0xE0434352 there means that program crashed on a .NET error, often because the task runs it under another account, without your drives or network access.

1. Press Win + R, type taskschd.msc and select OK.
2. Select Task Scheduler Library and find the task with (0xE0434352) in the Last Run Result column.
3. Open the task and look at the Actions tab. Note the program and its arguments.
4. On the General tab, note the account under When running the task, use the following user account.
5. In Event Viewer, open the .NET Runtime event 1026 from the time of the last run and read the Exception Info line, as in Fix 1.
6. Run the same program with the same arguments yourself. If it works for you but fails as a task, the account, its rights or the start folder are the difference.

A reader on Microsoft's forum saw exactly this on Windows Server: a scheduled .NET program ended with 0xe0434352, and its event 1026 named a SqlException. The program could not open its database connection at the scheduled time.

Fix 5. Repair .NET Framework and the Visual C++ runtimes

20 minutesLow riskSeveral .NET programs crash with 0xe0434352, or event 1026 names DllNotFoundException or BadImageFormatException.

When many programs crash with the same code, the part they share is the likely cause. .NET programs also call native files from the Visual C++ runtimes, and a missing one raises a .NET exception.

1. Repair each Visual C++ entry. Right-click an entry and select Change, then select Repair in the window that opens. Do the same for every Microsoft Visual C++ entry.

   

2. Install the latest supported version. Download the latest Visual C++ v14 Redistributable from Microsoft: Visual C++ Redistributable latest supported downloads and run it. On a 64-bit PC install both X64 and X86, because 32-bit programs need the x86 package. On an ARM64 PC install ARM64. This one version serves programs built with Visual Studio 2017 to 2026.
3. Run the .NET Framework Repair Tool. Download the Microsoft .NET Framework Repair Tool and run NetFxRepairTool.exe. The wizard looks for setup problems, asks for your consent before it applies fixes, then repairs the installed .NET Framework versions. The tool is in English only.
4. Turn on .NET Framework 3.5 if a program asks for it. Select Start, search for Windows Features and open it. In Turn Windows features on or off, select the .NET Framework 3.5 (includes .NET 2.0 and 3.0) check box and select OK. Windows downloads the files, so stay online.

   

These steps were written for Windows 11 25H2 and 26H2, Windows 10 22H2. The full page with the other versions and what each result means: How to repair Microsoft Visual C++ Redistributable and .NET Framework

• Do not uninstall .NET Framework 4.8 or 4.8.1. It is part of Windows 10 and Windows 11 and is repaired, not removed.
• Programs built on .NET 6, 8 or later use the separate .NET Desktop Runtime. If the maker names such a version, install it from dotnet.microsoft.com.
• Do not uninstall the Visual C++ packages. Repair them, then add the latest supported version.

Fix 6. Find an interfering program with a clean boot

20 minutesLow riskThe crashing program or the error type changes from time to time, or the window appears at sign-in and no startup app explains it.

Overlays, monitoring tools and some security programs load into other processes and can cause exceptions there. A clean boot starts Windows without them, so the crash stopping points to one of them.

1. Do a clean boot with the steps in How to perform a clean boot in Windows: third-party services and startup apps off.
2. Restart and use the PC as before. If 0xe0434352 no longer appears, turn half of the services back on and restart.
3. Repeat with smaller halves until the error returns. The last group you turned on holds the cause.
4. Update or remove that program, then return to a normal start.

Fix 7. Repair Windows system files with DISM and SFC

20 to 40 minutesNo riskWindows' own tools fail too, or Fixes 2 to 6 did not help and several programs are affected.

.NET Framework 4.8 is part of Windows 10 and 11, so damaged Windows files can break it for every program. DISM restores the Windows image and SFC then replaces bad system files from it.

1. Open an elevated command window. Right-click Start and select Terminal (Admin), or type cmd in the search box, right-click Command Prompt and select Run as administrator. Select Yes when Windows asks for permission.

   

2. Run DISM first. Type the command below and press Enter. DISM downloads clean copies of damaged components from Windows Update, so it can take several minutes. Wait until it says The operation completed successfully.

   DISM.exe /Online /Cleanup-Image /RestoreHealth

   

3. Run System File Checker. In the same window, type the command below and press Enter. Do not close the window until the verification reaches 100%.

   sfc /scannow

   

4. Read the result and restart. Compare the last message with the table below this guide, then restart the PC so that repaired files are loaded.

   

These steps were written for Windows 11 24H2 and 25H2. The full page with the other versions and what each result means: Run DISM and SFC to repair Windows system files

If 0xe0434352 keeps coming back: what to send and to whom

When the same program crashes with the same Exception Info line after a clean install, the bug is in that program. Only its maker can fix it, and they need the event text, not the code 0xe0434352, which every .NET crash shares.

• The full text of event 1026, copied in Fix 1, with all the "at" lines.
• The matching event 1000, with the program version, fault offset and report ID.
• What you did when it crashed: signing in, starting the program, a scheduled run.
• Your Windows version. Press Win + R and type winver.
• What you already tried: reinstall, startup app off, clean boot.

How to keep error 0xe0434352 from coming back

• Keep the program updated. Most 0xe0434352 crashes are fixed by the program's maker, not by Microsoft.
• Keep Windows updated. .NET Framework fixes arrive through Windows Update. Windows 10 left support on 14 October 2025, so a Windows 10 PC without extended updates no longer gets them.
• Keep startup lean. Fewer tray tools and overlays at sign-in means fewer programs that can crash before the desktop is ready.
• Install from the maker only. Copied program folders and repacks often miss files, which leads to FileNotFoundException.
• Test scheduled tasks under their own account after a password, server or permission change.

A single 0xe0434352 event for a tool you never use, logged once weeks ago, needs no action. Start looking when the same program crashes again and again, or when a program you need does not start.

Frequently asked questions

What is error 0xe0434352?

It is the exception code Windows uses for an unhandled CLR exception, the kind of error raised by programs built on .NET. Microsoft documents 0xE0434352 as the code of every CLR exception, and its last three bytes spell CCR in ASCII. The code tells you that a .NET program crashed, not why. The why is in the matching .NET Runtime event 1026 in Event Viewer, on its Exception Info line, and the program is named in the title bar of the error window.

What does "the exception unknown software exception (0xe0434352) occurred in the application" mean?

It means the program named in the window's title bar raised a .NET exception that its code did not catch, so Windows ended it. Windows calls it unknown because it cannot read .NET errors itself. The address after "at location" points into Windows' own code and changes on every run, so it does not help. Note the program name, then find its event 1026 in Event Viewer (Fix 1) and update or reinstall that program (Fix 2).

Why does the 0xe0434352 error appear when I sign in or shut down?

Because a program that starts or stops with Windows crashes at that moment. Tray tools, launchers, overlays and updaters start at sign-in, often before everything they need is ready, and may crash only some of the time. Read the program name in the title bar, then turn it off in Task Manager under Startup apps (Fix 3). If the window disappears, update or reinstall that program before you turn it back on.

What does Last Run Result 0xE0434352 mean in Task Scheduler?

Task Scheduler shows the exit code of the program the task started. 0xE0434352 means that program crashed on an unhandled .NET exception. The task itself is fine. Open event 1026 from the time of the last run to see the error type. Scheduled programs often fail because the task's account lacks rights, cannot reach a network share or database, or starts in another folder. Fix 4 shows how to check each of these.

What is AgentExecutor.exe and why does it crash with 0xe0434352?

AgentExecutor.exe is part of the Microsoft Intune Management Extension, which companies use to run scripts and install apps on managed PCs. When it crashes, the exception code is 0xe0434352 like any .NET program. In a report on Microsoft's WinGet project, it crashed on Windows 11 when a policy turned off the Microsoft Store source of WinGet. On a work PC, report the crash to your IT team instead of changing policies yourself.

Is 0xe0434352 caused by KERNELBASE.dll?

No. Event 1000 names KERNELBASE.dll as the faulting module because that Windows file raises the exception on behalf of the program. The same pair, KERNELBASE.dll and 0xe0434352, shows up for nearly every .NET crash. KERNELBASE.dll is almost never damaged, and you should not download a copy of it. Read the Exception Info line of event 1026 instead, which names the real error inside the program.

Is 0xe0434352 a virus?

No. It is a crash code, not a sign of malware by itself. It only says that a .NET program ended on an error. If the title bar or event names a program you do not know, check where its file lives and whether it is in Installed apps. If you cannot place it, run a scan with Microsoft Defender as a separate check: How to scan for malware with Microsoft Defender The fix for the crash still depends on the program, not on the code.

Should I reinstall .NET Framework to fix 0xe0434352?

Only if several .NET programs crash, and even then repair it rather than remove it. .NET Framework 4.8 and 4.8.1 are part of Windows 10 and Windows 11 and cannot be uninstalled like a normal program. Use the .NET Framework Repair Tool and the Visual C++ repair in Fix 5. If only one program crashes, the cause is almost always in that program, so Fix 2 is the right start.

Does 0xe0434352 look different on Windows 10 and Windows 11?

No. The code, the error window and the events 1000 and 1026 are the same on Windows 10, Windows 11 and Windows Server, and the steps on this page work on all of them. Only a few menu names differ, such as Installed apps on Windows 11 and Apps & features on Windows 10. Windows 10 left support on 14 October 2025, so .NET fixes no longer reach it without extended updates.

This page is in English. Is there help in my language?

This page explains error 0xe0434352 in English only, but the code and the fix are the same on every language version of Windows. The window, Event Viewer and Task Scheduler show the same code 0xe0434352, and the program name in the title bar stays the same. Follow Fix 1 to find the program and Fix 2 to update or reinstall it. Your browser's translate function can translate this page if you need it.