This procedure is the only one which worked for me on a Windows 2012 R2 and 2016 RDP session:
1. Click Start
2. Type osk (to bring up the on screen keyboard)
3. Hit enter
4. Once the on screen keyboard is open, hold ctrl+Alt on your physical keyboard, then click on the del key in the on screen keyboard.
5. Minimize the on screen Keyboard
6. Click Change a password.
Error:- You try to Request and Install Lync server Certificate using deployment wizard and get the below error while assigning the certificate to Web Services Internal, External and Default and get below error
Command execution failed: The process does not possess the ‘SeSecurityPrivilege’ privilege which is required for this operation
Cause:- The reason is you do not have appropriate access to assign the certificate to given lync services.
Other Information:- Open GPEDIT.MSC in the lync server and go to Computer Configuration > Windows Settings > Security Settings > Local Policies > User Rights Assignment
Check the setting “Manage Auditing and Security Logs”, you will see Local Administrators Group missing here.
Solution:- Add local Administrators group here locally or using Group Policy, run gpupdate /force, logoff user and relogin and try again.