I am new to excel add-in prgramming and I am having a existing excel add-in project need to modify.
The plug-in has 2 parts, one is programmed in VB and compiled into a
Welcome to DLL Hell!
You'll have to remove the reference to the old dll.
Have a look at: regsvr32
regsvr32 /u [path of old dll]/[filename]
regsvr32 [path of new dll]/[filename]
Eg:
regsvr32 /u c:\windows\system32\file.dll
You can add /q to hide all messages
How do you repackage it for your colleagues? There are multiple ways. Create a bat file and email it, put it as part of the logon script. Or go to each workstation and manually do it