Is this a virus?

No. Please get this application only from releases to be sure.

VirusTotal scans

As of 1 July 2025 (V2.0):

• MultipleRobloxInstances.dll [4/72]: https://www.virustotal.com/gui/file-analysis/ZWQ4ZjI2OGE4NjVhODU1MzA5MTY5MWJjMzYyNjVlMmY6MTc1MTM4MTM5MQ==
• MultipleRobloxInstances.exe [0/72]: https://www.virustotal.com/gui/file-analysis/ZmNjMDk2NTI3MjNlMDg1OTc2OWE5MDQ4NzRjOGYzZTQ6MTc1MTM4MTQ1OA==
• System.Management.dll [0/72]: https://www.virustotal.com/gui/file/67f0621fcd09e8a65e4b2b95f94fd99aaece6cbad16b42fce0b2e6197ba98ae8

Logical explanation

• Multiple Roblox Instances is not obfuscated, and thus malware cannot be hidden. One may use a .NET decompiler like ILSpy to inspect the downloaded executables from the releases page.
• Multiple Roblox Instances has no auto-update function. Instead, a notification at the top of the application indicates when an update is available, meaning Multiple Roblox Instances must be re-downloaded every time there is a new update. This prevents malware from being pushed to computers as users can verify the application is not malware.

Why is administrator permission needed to run this application?

Unlike Roblox launchers like Bloxstrap, Multiple Roblox Instances must keep track of all applications started -- you can see this here. Administrator permission is required to monitor new processes.