Overwhelmed by demand, Microsoft has halted free trials of its new Windows 365 service so that it can better serve paying customers.

“Following significant demand, we have reached capacity for Windows 365 trials,” the Microsoft 365 Twitter account revealed yesterday. Microsoft director Scott Manchester added that the response to Windows 365 has been “unbelievable” and that Microsoft needed to “pause [the] free trial program while [it] provisions additional capacity.”

Microsoft announced Windows 365—previously known as Cloud PC—in mid-June and then released the service publicly this past Monday, on August 2.

Like Azure Virtual Desktop, Windows 365 provides access to Azure-hosted Windows 10 virtual machines (VMs) which are streamed locally to Windows PCs, and to Macs and mobile devices of all kinds. But unlike Azure Virtual Desktop, Windows 365 has a set per-user fee each month, which ranges from $20 to $162 depending on the configuration.