Hi SamerMaslamani,
Thank you for reaching out to Microsoft Community.
May we ask what are these problems you are having with your Skype for Business? Does this include crashing of the application?
Please try these steps to troubleshoot the issue:
1: Run Surface Diagnostic Toolkit and check Windows Update
2: Use the System File Checker Tool in Windows 10
If this answer your question, we highly encourage you to inform our Community by clicking on Yes or marking my post as an answer. This will help other members who may have the same issue as you. Otherwise, don't hesitate to update us so we can further assist you.
Kind Regards,
Marrion Y.