This is related to only one login issue

• Check event logs, by filtering with warnings and errors on citrix delivery controller.
• When you check event logs, if you see a profile related error, goto profilestorepath\profile\userid\upm_profile. Look for ntuser.dat file. You will also have ntuser.dat.lastgoodload file. In citrix delivery controller event viewer, if you see any error for profile redirection, you can backup and remove ntuser.dat file, rename ntuser.dat.lastgoodload file to ntuser.dat. This is user’s registry hive store. So, user’s settings like start menu shortcuts, taskbar shortcuts would be missing.
• Always check director trends to see if a logon time increase is shown overtime.