This can occur when the user running the application is logged on under a different user account than the user account who installed the application, and the installation package installed the application on a per user basis.

Note: Microsoft help article regarding this issue

Confirm Meet Manager was installed under correct user and with proper permissions
NoteHy-Tek software typically cannot be installed while logged into computer as admin user and then be used while logged in as standard user
Note: It is highly recommended that you backup your license-file before uninstalling any Hy-Tek products. For more information, please read Backing Up License File for Hy-Tek Products
  1. ​Right-click desktop icon, select Properties
  2. Under Details tab, see Owner
    1. If Owner is yourself skip to step 6
    2. If Owner is admin or someone from your IT department, ask them to continue to Step 3
  3. Log in to computer as admin user and uninstall Meet Manager
  4. Log off computer and log back in as standard user (user who will be using Meet Manager)
  5. Install Meet Manager
  • Note: May need to give standard user admin rights to install
  1. ​​Confirm standard user has necessary folder rights
    1. Full user rights (including rights to make changes) to C:/Hy-Sport and its subfolders
    2. Full user rights (including rights to make change) to C:/tfmeets6
  • Note: If you store database files in another location, full user rights are needed to that folder as well
  1. At least read-only rights to C:/Windows and its subfolders

When an application is installed for a specific user, the COM components referenced in the application are registered in the HKEY_CURRENT_USER hive in the Windows registry. When an application is installed for All Users, the registry entries are made to the HKEY_LOCAL_MACHINE hive in the Windows registry, and all users should be able to read these entries by default.