SAGE Accpac ERP

My working company have one SAGE Accpac ERP server connected to 5 Workstations Accpac Client (PC), but everyday users complaint the accpac client is auto disconnected and popup the messagebox "no licence found" and restart the pc then only can use it, but few minutes the problem come again, everyday happen 5-6 times. I had used a lot of methods to do still cannot slove.

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Accpac Server connect to Accpac Client network:
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1. SHARE out the accpac server program file to network.
2. MAP the accpac server program file folder to accpac client pc.
3. Create a accpac.exe shortcut to the users desktop.

Hopefully someone can help, Thank You.