How to Fix Windows Error runtime-error — Runtime Error [2026]

Windows Error runtime-error: Runtime Error

This error typically occurs when corrupted or outdated microsoft visual c++ runtime installation. Below you'll find 5 proven fixes to resolve it.

What Causes Windows Error runtime-error?

Windows error runtime-error (Runtime Error) can be triggered by several issues:

Corrupted or outdated Microsoft Visual C++ Runtime installation
Conflicting software modifying shared runtime libraries
Insufficient memory causing runtime heap corruption
Application bug triggered by specific user actions or data
Outdated application version with known runtime bugs

How to Fix Windows Error runtime-error — Step by Step

Repair or reinstall Visual C++ Redistributables

Settings > Apps > search for 'Microsoft Visual C++' > click each version > Modify > Repair. If repair fails, uninstall and reinstall from microsoft.com. Install both x86 and x64 versions of all years (2010-2022).

Update the application

Open the app > Help > Check for Updates, or visit the official website for the latest version. Runtime errors in applications are frequently fixed in updates.

Run the application in compatibility mode

Right-click the application > Properties > Compatibility > check Run this program in compatibility mode > select a previous Windows version. This can resolve runtime library conflicts.

Perform a clean boot

Win + R > msconfig > Services > Hide all Microsoft services > Disable all > Startup > Open Task Manager > Disable all startup items > Restart. Test the application. If the runtime error disappears, a background program is causing the conflict.

Check available RAM and virtual memory

Right-click This PC > Properties > Advanced system settings > Advanced tab > Performance Settings > Advanced > Virtual memory > ensure it is set to Automatically manage. Low virtual memory triggers runtime heap errors.

Still Getting Error runtime-error?

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Frequently Asked Questions

What is a Runtime Error?

The application started successfully but crashed while running because something went wrong during execution — a corrupted library, a memory problem, or an application bug reached a state it could not handle.

Why does a Runtime Error appear in a specific spot?

The crash happens when the application reaches code that triggers the bug — like loading a specific file type, opening a particular dialog, or reaching a data processing step. This helps identify the cause.

Is a Runtime Error the same as a crash?

Yes, essentially. A runtime error terminates the program unexpectedly during execution rather than during startup or file loading.

Can corrupted user data cause Runtime Errors?

Yes. If the application reads a corrupted preferences file or document, it can encounter unexpected data that causes a runtime crash. Try deleting the application's settings folder to reset preferences.

When should I contact the software developer?

If the runtime error occurs on a clean system with fresh Visual C++ installs and only with a specific application, it is likely an application bug. Report it with steps to reproduce to the developer's support team.

How to Fix Windows Error runtime-error — Runtime Error