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I downloaded the new DL-Windows v5.1.1 ZIP file to my computer, but when I double click to open the file, my computer displays a window with a list asking me to select an application to use to open this file. Why is my computer unable open this ZIP file?

Answer:
Depending on your version of the Microsoft Windows operating system, your computer may not have a software application installed that can be used to unzip the Zip file (the file name is "DL-Windows 5.1.1.zip").
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An "Error 3265 Item not found" appears while communicating with the DL3000 lock or DTM.

Answer:
DL-Windows Version 2.53 may give the error "Error 3265 Item not found" while in communication with the DL3000 Lock or DTM for Accounts created on older versions.  There is a patch available on the NAPCO / Alarm Lock web site that will remedy...

How do I change the Lock ID number using DL-Windows software?

Answer:
Run DL-Windows and open the account name from the list (on the left side of the DL-Windows application window).  Expand the lock list by clicking the [+] icon next to the account name, or by double-clicking the account name.  Click to...

What is the default password for DL-Windows?

Answer:
Every time you start the DL-Windows application the small login window appears.  This window contains one User Name pull-down box, and one Enter Password field. 
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How do I change the Lock ID Number of any lock in DL-Windows?

Answer:
Open DL-Windows and select the account name from the list on the left side of the DL-Windows application window.  Expand the lock list by clicking the "+" symbol next to the account name (or double-click the account name).  Click to select...

The toolbar buttons in my DL-Windows program are gray; when I click on them, nothing happens. How do I activate these buttons?

Answer:
Open the DL-Windows application and click any account name (all account names are listed on the left side of the application window).  Press your keyboard Enter key to expand the selected account to display your lock(s) name(s).  Next,...

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