If you’re hoping to test out Windows 365, Microsoft’s new cloud-based operating system, you’ll need to wait, as the free trial that launched on Monday quickly ran out of server capacity. 

“We have seen unbelievable response to Windows 365 and need to pause our free trial program while we provision additional capacity,” Scott Manchester, director of program management for Windows 365, tweeted on Tuesday.

In the meantime, Microsoft is allowing interested users to sign up to receive notifications when free trials resume. But if you don’t want to wait, you can buy access to the service now.

Microsoft introduced Windows 365 last month as a way to stream the Windows 10 operating system on any device, including a Mac, smartphone, or Linux machine. With the cloud-based service, a company doesn’t need to send a corporate-issued laptop to employees. Instead, the employee can gain access to Windows 10 and their company's software simply by logging into windows365.microsoft.com.

Windows 365 is currently being marketed to enterprises and organizations, not consumers. The service starts at $20 to $24 a month for a single Windows 365 account running on a single virtual CPU with 2GB of RAM and 64GB of storage. Pay more to scale up the specs to run up to eight virtual CPUs, 32GB of RAM, and 512GB of storage.