Unlock XLS Document Password Online or via .NET
Develop powerful .NET based XLS document locking and unlocking utility application. Code listed for removing password restrictions from XLS file through .NET.
Unlock XLS Password Online
- Import XLS file to unlock by uploading it.
- Do it by clicking inside the drop area via drag and drop of app.
- Depending on the size of XLS file and internet speed wait for few seconds.
- Enter the password to remove.
- Click the ‘UNLOCK’ button to unlock document.
- Download the file instantly.
Remove XLS Password via .NET
- Load password-protected XLS file using Workbook class
- Select the relevant sheet
- Invoke the Unprotect() method to remove password
- Call the Save method to save the document
.NET Code : Remove Password from XLS Document
Unlocking .xls files—used by older versions of Microsoft Excel—removes restrictions like sheet protection, workbook passwords, and editing locks. These files often contain legacy financial, business, or academic data that needs to be accessed or modernized. Always ensure appropriate authorization before unlocking sensitive or proprietary .xls files.
Use Cases
Editing Historical Financial Reports
Gain access to legacy accounting sheets that require updates or auditing.Unlocking Archived Corporate Data
Open protected internal reports or project plans created in Excel 2003 or earlier.Updating Obsolete Formulas
Unlock cells containing hardcoded or outdated formulas for recalculations.Removing Forgotten Passwords
Bypass sheet or workbook passwords that are no longer known.Migrating to
.xlsxor Google Sheets
Unlock for seamless transition to modern spreadsheet systems or cloud environments.Auditing Locked Macros or Data Flows
Analyze hidden formulas, macros, or named ranges from a compliance or integration standpoint.
Develop XLS Protection Management Application via .NET
Need to develop a XLS protection management app or utility? With
Aspose.Cells for .NET
a child API of
Aspose.Total for .NET
, any .NET developer can integrate the above API code within its document protection or unprotection application. Powerful .NET library allows programming any document protection solution. Moreover it can support many popular formats including XLS format.
.NET Utility to Manage XLS Protection
There are three alternative options to install “Aspose.Cells for .NET” or “Aspose.Total for .NET” onto your system. Please choose one that resembles your needs and follow the step-by-step instructions:
- Install a NuGet Package . See Documentation
- Install the library using Package Manager Console within Visual Studio IDE
- Install the library by hand using Windows Installer
System Requirements
Our product is fully cross-platform and supports all major .NET implementations following ‘.NET Standard 2.0’ specification:
- Microsoft .NET Framework, starting from the earliest 2.0 version, and ending with the latest ‘.NET Framework 4.8’
- .NET Core, starting from the earliest 2.0, and ending with the latest ‘.NET 6’
- Mono >= 2.6.7
As .NET code doesn’t rely on the underlying hardware or operating system, but only on a Virtual Machine, so you are free to develop any kind of software for Windows, macOS, Android, iOS and Linux. Just make sure you have installed the corresponding version of .NET Framework, .NET Core, Windows Azure, Mono or Xamarin.
We recommend using Microsoft Visual Studio, Xamarin, and MonoDevelop IDE to create C#, F#, VB.NET applications.
For more details please refer to Product Documentation .
FAQs
- Can I use above .NET code in my application?Yes, you are welcome to download this code and utilize it for the purpose of developing .NET-based document protection or unlocking application. This code can serve as a valuable resource to enhance the functionality and capabilities of your projects in the domain of backend document processing, manipulation and protection.
- Is this online document unlocking app work only on Windows?You have the flexibility to initiate document unlocking for password removal at any device, irrespective of the operating system it runs on, whether it be Windows, Linux, Mac OS, or Android. All that's required is a contemporary web browser and an active internet connection.
- Is it safe to use the online app to unportect XLS document?Of course! The output files generated through our service will be securely and automatically removed from our servers within a 24-hour timeframe. As a result, the display links associated with these files will cease to be functional after this period.
- What browser should to use App?You can use any modern web browser like Google Chrome, Firefox, Opera, or Safari for online XLS document unlocking. However, if you're developing a desktop application, we recommend using the Aspose.Total document processing API for efficient management.