Update_No_Change Initialization Variable
Controls what happens when you check in a file that you have not changed.
When you check in a file that has not changed since you checked it out, Visual SourceSafe can take one of three actions:
Check in the file.
Undo the checkout of the file.
Prompt you to specify how to handle the file.
Because no changes have been made, the only difference between the first two actions is that checking in the file creates an entry in the file history with a comment but no change record. Undoing the checkout creates no record in the file history.
You can set this variable in your Ss.ini file directly or in Visual SourceSafe Explorer. In Visual SourceSafe Explorer, use the SourceSafe Options dialog box, General tab and make your setting in the Check in unchanged files box.