Microsoft sues enterprises for infringement? Have other companies received similar phone calls or emails?

Microsoft is now cracking down on piracy in China. There is no need to use a tough approach to individual users for the time being. The most important thing is that the enterprise is profitable and has the obligation and necessity to use genuine products. But you'd better make sure this is a warning from Microsoft. If it is true, your company can't compete with Microsoft at all. After all, other people's products have intellectual property rights and copyrights.