LTspice 26.0.2.1 exits immediately after startup on Windows 11

Subject: LTspice 26.0.2.1 exits immediately after startup on Windows 11

System Information

• LTspice version: 26.0.2.1

• Windows version: 10.0.26200.8390

• Graphics adapter: Intel(R) Iris(R) Xe Graphics

• DisplayLink dock software installed (problem persists when disconnected from dock and using laptop display only)

• LTspice previously worked on this machine

• Other users in the company are currently using LTspice successfully

Problem Description

LTspice no longer launches. Clicking the Start menu shortcut or running LTspice.exe directly causes no visible response. No LTspice process remains running and no crash dialogs are displayed.

Installation Location

LTspice is installed in:

C:\Users\caldwellj\AppData\Local\Programs\ADI\LTspice

LTspice.exe properties:

• File version: 26.0.2.1

• Product version: 26.0.1.1

• File size: ~65 MB

• Digital signature appears valid

Observed Behavior

Initially:

• Launching LTspice produced no visible response.

• No process appeared in Task Manager.

• Event Viewer showed no Application Error.

• Reliability Monitor showed no application failures.

After deleting/renaming LTspice.ini:

• LTspice displayed the "Anonymously Share LTspice Usage Data" dialog.

• Clicking either "Yes" or "No" causes LTspice to exit immediately.

• No main window ever appears.

• No crash is logged in Event Viewer or Reliability Monitor.

• ERRORLEVEL returned by the process is 0.

Troubleshooting Performed

Configuration Reset

• Renamed/deleted:

C:\Users\caldwellj\AppData\Roaming\LTspice.ini

Result:

• Telemetry dialog appears, then LTspice exits.

Local Data Reset

Renamed:

C:\Users\caldwellj\AppData\Local\LTspice

to:

LTspice_old

Result:

• Same behavior.

• No new Local\LTspice folder is recreated.

Reinstallation

• Downloaded and installed latest version.

• Rebooted system.

Result:

• Same behavior.

Executable Tests

Executed directly:

C:\Users\caldwellj\AppData\Local\Programs\ADI\LTspice\LTspice.exe

Result:

• Exits immediately with no error.

• ERRORLEVEL = 0.

Graphics Tests

Set:

QT_OPENGL=software

before launching.

Result:

• No change.

Problem also persists with:

• DisplayLink dock disconnected

• External monitors disconnected

Window Position Test

Tried Alt+Space, M to recover off-screen window.

Result:

• No change.

Event Viewer

Checked:

• Windows Logs → Application

• AppLocker logs

• CodeIntegrity logs

Result:

• No LTspice errors or warnings generated.

Reliability Monitor

Result:

• No LTspice application failures recorded.

Installation Contents

Folder contains:

• LTspice.exe

• updater.exe

• Remove.exe

• lib.zip

• examples.zip

• LTspiceHelp folder

Manually extracted:

• lib.zip → lib folder

• examples.zip → examples folder

Result:

• No change.

Updater

updater.exe launches successfully and reports:

"Your software is up to date."

Hardware

Display adapters:

• Intel(R) Iris(R) Xe Graphics

• DisplayLink USB Device

• DisplayLink USB Device

Current Behavior

After deleting LTspice.ini:

1. LTspice launches.

2. "Share Usage Data" dialog appears.

3. Clicking either Yes or No causes immediate exit.

4. Main application window never appears.

5. No new AppData\Local\LTspice folder is created.

6. No crash logs are generated.

Please advise on additional diagnostic options or known issues with LTspice 26.0.2.1 on Windows build 10.0.26200.8390.