Malwarebytes blocking QuickText

If you use Malwarebytes, Excel may close when you run QuickText, with no error or warning. This happens because of a Malwarebytes feature called “Office spawning batch command prevention.” QuickText uses PowerShell to send messages, which triggers this setting.

Here’s how to fix it:

1. Open Malwarebytes Start Malwarebytes from your Start menu or taskbar.

2. Go to Scanner Settings > Click the 3 dots > Settings > Protection Under Exploit protection, click Advanced Settings

   
3. Under the "Advanced behavior protection tab" , uncheck "Office spawning batch command prevention"

   
4. Save and Restart Excel Click OK or Save. Close Excel completely, then open your QuickText file again.

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Reference

Malwarebytes officially confirms this as the solution. Malwarebytes Forum Post