This issue may occur when the system is unable to read the NEST file or when the license service fails to start automatically. To resolve this, you can try one of the two solutions below — either delete and regenerate the NEST file or reinstall the Access UBS software.
Before proceeding with either solution, please ensure that:
Windows Firewall Defender and any antivirus software are turned off.
All client PCs have closed the UBS application completely.
Regenerate the NEST file (without uninstalling the system)
On the computer where the error occurs, go to C:\ProgramData\Sage.
If you cannot see the ProgramData folder:
Open File Explorer, click View, and tick Hidden items to show hidden folders.
Or press Windows + R, type C:\ProgramData\Sage, and press Enter.
Locate and delete the file named NEST.phx.
Open Windows Services.
Search for Access UBS License Service.
Right-click the service and select Restart.
Launch the Access UBS application.
Try to activate your license again.
Reinstall Access UBS
On the computer where the error occurs, open Control Panel.
Go to Programs, Programs and Features, Uninstall a program.
Select Access UBS and click Uninstall.
After uninstalling, go to C:\ProgramData\Sage.
If you cannot find the folder:
Enable Hidden items in File Explorer → View, or
Press Windows + R, type C:\ProgramData\Sage, and press Enter.
Delete the file named NEST.phx.
Reinstall the Access UBS software.
Once installation is complete, launch Access UBS.
Activate your license again.