Microsoft does not enable its workers to utilize Slack, GeekWire‘s Nat Levy and Todd Bishop reported, pointing out an internal file.

Find Out More: Inside Slack’s direct listing: Here’s what really decreased in between the tech business and its Wall Street advisors

While Microsoft has a competing work environment chat app, called Microsoft Teams, the tech business apparently points out security threats as the factor for its internal Slack restriction. The business provides the following description in an internal list of software application and online services it limits or dissuades workers from utilizing, according to GeekWire:

Slack Free, Slack Requirement and Slack Plus variations do not offer necessary controls to appropriately safeguard Microsoft Copyright (IP). Existing users of these options ought to move chat history and files connected to Microsoft company to Microsoft Teams, which provides the exact same functions and incorporated Workplace 365 apps, calling and satisfying performance. Find out more about the extra functions that Teams can offer your workgroup. Slack Business Grid variation adheres to Microsoft security requirements; nevertheless, we motivate usage of Microsoft Teams instead of a competitive software application.

Microsoft likewise apparently forbids workers from utilizing the grammar-checking app Grammarly and the Kapersky security software application. It dissuades workers from utilizing Amazon Web Solutions, Google Docs, PagerDuty, and the cloud variation of GitHub, according to GeekWire.

Microsoft and Slack did not right away react to Service Expert’s ask for remark.

Slack called Microsoft as its main rival in a regulative filing sent out to the Securities and Exchange Commission in April, and Microsoft noted Slack amongst its rivals in its newest yearly report Microsoft released Groups in 2016, 7 years after Slack was established.

Slack started noting its shares on public markets on Thursday. They closed 5% listed below their launching cost on Friday.

Check out GeekWire’s complete story here