???
Not sure I can understand what you are trying to say here.
It seems like you are saying when you attempt to open an assembly drawing you are being asked to log into Vault but yet you keep dismissing (cancelling) it.
It can be stopped by simply loging into Vault before you attempt to open the assembly drawing from Vault.
It makes sense if you think about it, the file you are attempting to open resides in Vault. In order for you to access it (open it), you need to be logged into the Vault.
The door to your house is locked, you are attempting to get in, how would you open the door? With your key!
How far off am I on this?
