Access Denied trying to Open COM1

[ian_w]

I have a printer attached to COM1 which I print barcodes to, when I try to run the code I get a File/Access Denied Error 75 message.

Is there anything in Access 97 that could be causing this?

Ian

 

[KenHigg]

When accessing a port directly, don't you have to do some kind of 'open' command before you send data to it?

 

[ian_w]

Its the Open Command that its failed on, I have

Open "COM1" for Output As #1

Problem is as soon as it hits the open it fails with access denied !

 

[KenHigg]

Did you have it working in a previous version of Access or is this your first shot at it?

 

[KenHigg]

Did you have it working in a previous version of Access or is this your first shot at it?

 

[ian_w]

It works when we run it on NT4, we have put in some new XP machines which refuse to print on COM1

From all the testing I have done so far it appears to be a group policy option I think

 

[KenHigg]

Hum... I was thinking that you may have to use some kind of control to manage access to a port...

Do you have another app that accesses the port?

 

[ian_w]

Yes, We have a app called 'Barcode' this initializes the printer and sends the .BAS file to it.

 

[KenHigg]

Wouldn't that eliminate the access rights error possibility?

 

[ian_w]

Im all but convinced now that its a group policy issue, if I log on to the machine locally then it works fine, with a network logon the permissions are incorrect and it fails

Thanks for the help, hopefully I can track the policy problem down!

 

[KenHigg]

Hum... Cool trick - I'll file that one away for later use.