
Hi @Sigrala ,
If you forget your PIN code, you can try to follow these tips to reset your PIN code:
For Skype for Business Online
You can reset the PIN via Skype for Business Setting Portal. To go to Skype for Business Setting Portal, click Forgot your dial-in PIN? link in your meeting invitation in Outlook.
For Skype for Business on-premises
1)Click Forgot your dial-in PIN in meeting invitation in Outlook.
2)Under Personal Identification Number(PIN), click Sign In.
3) Type the same user name and password that you use to log into Skype for Business or your company's network
4) Under Personal Identification Number (PIN), click Reset your PIN, and follow the instructions on the page to create a new one.
For more details about how to reset PIN code, you can refer to:
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