In a recent Windows update, there is a bug causing this issue. To fix it, here are the steps:
1. Login to your VPS and Open cmd
2. Run this command to open Local Group Policy Editor: gpedit.msc
3. In the Local Group Policy Editor:
Navigate to: Local Computer Policy> Computer Configuration > Administrative Templates > Windows Components > Remote Desktop Services > Remote Desktop Session Host > Connections > Select network detection on the server - set to Enabled
Select this on the left window:
Turn off Connect Time Detect and Continuous Network Detect
Then click apply and save.
4. Reboot your server to take effect
You can also contact our support via ticket or live chat so we can help you to fix it,
We have already fix this issue in our latest Windows image, you can also reinstall your VPS with the rebuild function in the dashboard.