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Fix Corsair Macro Key Opening Multiple Microsoft 365 Tabs in Firefox

Maira Mehtab Sep 22, 2026 869 views

Question details

Pressing a single macro key on a Corsair K55 keyboard causes dozens of Microsoft 365 tabs to open simultaneously in Firefox, even though no macro has been manually configured.

Product: Corsair K55 / Microsoft 365 / Firefox
Device & OS: not provided
Scenario: Typing or pressing macro keys on a Corsair keyboard while using a PC.
Observed behavior: The browser intercepts a continuous command loop and opens multiple unwanted tabs loading the Microsoft 365 webpage.

Before you start

Ensure you have the latest version of the Corsair iCUE software installed on your computer, and temporarily close Firefox to prevent system crashes from excessive tab loading during troubleshooting.

Solution 1Recommended

Check and Disable the Macro Key in Corsair iCUE

Use the official Corsair software to inspect key assignments and disable the rogue macro key that is sending the repetitive browser commands.

Sometimes, macro keys can trigger hidden default Windows shortcuts (such as the Office shortcut combination) if they are malfunctioning or improperly assigned. Clearing the key assignment can stop the tabs from opening.

Open Corsair iCUE

Launch the Corsair iCUE application from your Windows Start menu or system tray.

Select your Keyboard

Click on the Corsair K55 keyboard icon under your listed devices to access its settings.

Access Key Assignments

Navigate to the 'Key Assignments' or 'Actions' menu on the left sidebar to view the current macro setups.

Disable the Problematic Key

Select the specific macro key (e.g., G1-G6) causing the issue, click the trash can icon to delete any hidden assignments, or explicitly set its function to 'Disable'.

Tip: If you don't use the dedicated macro keys, disabling all of them temporarily can help isolate whether the issue is hardware-related.

Solution 2

Update Keyboard Firmware

Updating the device firmware can resolve hardware-level bugs that cause keys to spam or loop commands.

Free Microsoft Office alternative

Switch to WPS Office for a Distraction-Free Offline Experience

If Microsoft 365 browser shortcuts and unwanted tab pop-ups keep interrupting your workflow, consider switching to WPS Office. It provides a robust, offline-capable desktop application that keeps your documents securely out of the browser.

1. Download the Installer: Visit the official WPS website and download the free desktop application for your operating system.
2. Install WPS Office: Run the setup file and follow the quick installation prompts to set up your new office suite.
3. Open Your Files: Directly open your existing Microsoft Office files in WPS Office without worrying about formatting or compatibility issues.

No unwanted browser pop-ups with a dedicated desktop applicationFully compatible with Microsoft Office formats (.docx, .xlsx, .pptx)Lightweight and free to use for daily documentation needsAll-in-one workspace for documents, spreadsheets, and presentations

microsoft office alternative - wps office

Frequently Asked Questions

Why does my keyboard open Microsoft 365 randomly?

Windows 10 and 11 have a built-in shortcut (Ctrl+Shift+Alt+Win) designed to open the Microsoft 365 app or website. If a keyboard macro key malfunctions or is mapped improperly, it can accidentally spam this exact combination, triggering the browser tabs.

How can I stop Firefox from opening dozens of tabs at once?

If a macro is stuck in a loop, Firefox will continuously receive the command to open a new tab. You can stop this by physically unplugging the keyboard to break the hardware loop, then checking your macro software settings before plugging it back in.

Can I disable the Windows Office shortcut key?

Windows does not provide a simple native toggle to disable the built-in Office key combination. However, you can use registry edits or third-party remapping tools like Microsoft PowerToys to intercept and disable the shortcut at the OS level.

Office Quick Solutions