open session in Windows Service

Question

I created vb.net application which run some macros, as desktop application it is working well, then I converted it to Windows Service also it is working well on my device but when I moved it to Client server I got : 
 "Connect System.Runtime.InteropServices.ComException (0x80004005): Session could not be opened" 
 I tried the service as (Local System, Local Service & Network Service) in all cases I got the same error. 
 
 what is the issue? I think it is permission issue but how I can solve it?

SergeB · Accepted Answer

C:\Program Files (X86) (or the non x86) is typically the default install location for programs. By default the OS sets permissions for users to read and execute, and admins having full control - which is typically the security you want. Dumping it into c:\ adds an Autheticated Users with special permissions - which would allow this group to modify any files within that folder (unless modified by the installer). Authenticated Users according to MS are all users that have logged in with a username and password. 
 Answering the question, change your service to run as a local or domain user account. Then give that account modify rights to the Sage300 SharedData folder, and confirm it has read and execute rights to the Sage300 Program Files folder. Then restart the service.

Sage 300

open session in Windows Service

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