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Learn how to protect your Windows PC from malware and other threats.Application Control
Control your PC apps and their behaviors.What’s that .exe?
Is that executable safe, or a threat?SpyShelter PC Protection
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Learn how to prevent unauthorized Screenshots.Executable Directory
Our ultimate directory of Windows PC executables.The file CalCheck.exe, published by Microsoft Corporation, is the executable for the Calendar Checking Tool for Outlook (CalCheck). This command-line utility is designed to diagnose and report issues within Microsoft Outlook calendars, particularly for mailboxes hosted on Microsoft Exchange Server.
CalCheck examines various aspects of the Outlook calendar, including permissions, free/busy publishing, delegate configurations, and automatic booking settings. It also inspects individual calendar items for common problems such as missing organizer information, duplicate entries, or corrupted recurrence data. The tool generates a detailed report to assist in identifying and resolving these issues.
You might have CalCheck.exe on your system if you've previously downloaded it to troubleshoot calendar-related problems in Outlook. It's particularly useful for IT professionals managing Outlook in enterprise environments, as it helps maintain calendar integrity and prevent scheduling conflicts.
Below are 4 simple steps you can take to see if the CalCheck.exe process is safe or malware.
Researched by Laura @ SpyShelter Labs
A Trojan is a harmful software that pretends to be a legitimate program or file to deceive users into downloading it. It can steal personal information, damage files, or give hackers control over the infected device.
Download SpyShelter to see detailed safety information about every .exe on your PC.
Check your PC for threatsWe’ve found Microsoft Corporation should be the publisher of CalCheck.exe.
How do we know? Our SpyShelter cybersecurity labs focuses on monitoring different types of Windows PC executables and their behaviors for our popular SpyShelter Antispyware software. Learn more about us, and how our cybersecurity team studies Windows PC executables/processes.
The publisher of an executable is the entity responsible for its distribution and authenticity. Most processes/executables on your PC should be signed. The signature on the executable should have been verified through a third party whose job it is to make sure the entity is who it says it is. Find an unsigned executable? You should consider scanning any completely unsigned .exe on your PC.
Our team at SpyShelter has been studying Windows PC executables for over 15 years, to help fight against spyware, malware, and other threats. SpyShelter has been featured in publications like The Register, PC Magazine, and many others. Now we’re working to share free, actionable, and easy to understand information about Windows executables (processes) with the world, to help as many people as possible keep their devices safe. Learn more about us on our "About SpyShelter” page.
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