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Digital certificate can no longer be selected when logging in to a site (Edge)

Have you ever seen the following error message when using login with a digital certificate? The certificate you have selected is not available for this service. Please close all browser windows and try again. Internet ban...

2024.08.02

Edge

Allows you to see the address where the book is saved Excel (Excel)

You can display the path in the toolbar so that you can always see the address where you saved your Excel book. We will show you how to do this in this article. Click on the "File" tab, click on "Options", click on "Quick Access Toolbar" > "All...", and then click on "Quick Access Toolbar" > "Quick Access Toolbar" > "All...".

2024.05.16

Excel Functions

What does the error message "#NAME?

Error messages are unavoidable when dealing with Excel, and you may be surprised when they suddenly appear. Here are the meanings and countermeasures for this error message. Meaning of "#NAME?

2024.06.05

Excel Functions

How to delete a sheet by specifying the sheet name VBA(Macro)Excel(Excel)

As the number of unneeded sheets grows, browsing becomes worse, and Excel itself becomes slower. In such cases, you can use VBA to automatically delete unnecessary sheets. In this article, we will show you how to use VBA to delete sheets at high speed...

2024.08.23

Excel Macro (VBA)

How to set up read-only and password Excel (Excel)

Here is how to set Excel to read-only or set a password when opening. Display the General Options screen First, display the "Save As" screen. On the Excel screen, click the "File" tab, then click "Save As," then click "...

2024.01.10

Excel Functions

Excel (Excel) Conditional Formatting Methods

Excel has a function to change the format according to cell values and various conditions. Here is an example of a specific setting. Suppose you have a simple table like the one below, and you want to shade in red the cells where no sales have been entered. First, select the range you want to format. Next, select "Home"...

2023.12.27

Excel Functions

How to Round Time to 15-Minute Intervals in Excel (Easy Formula Guide)

Struggling with time rounding in Excel? This guide shows you how to combine TIME and ROUND functions effectively. Simple techniques that boost productivity. Master time rounding calculations with ease.

2025.07.15

Excel Functions

VBA "Overflow occurred." Error cause and remedy (runtime error '6′:)

Cause of ErrorThis error occurs when the data type is not in a format that can be handled, or when the data type exceeds the range of numbers that can be handled. First, let's reproduce the error. As shown in the figure above, we have set up the code to copy the numeric value in cell "B3" to cell "B4".

2024.10.10

Excel Macro (VBA)

[For Beginners] Step-by-Step Guide to Installing SeleniumBasic

This article offers a beginner-friendly, detailed guide to installing SeleniumBasic. Stuck on the installation and thinking about giving up on automation? The truth is, anyone can install it by taking it one step at a time. A professional with 20 years of experience teaching Excel will walk you through the process.

2025.06.16

Excel Macro (VBA)

For beginners] Explanation of causes of Excel being slow and countermeasures.

Manager, have you ever felt 'kind of heavy' when using Excel? Student Yes, sir! I recently started using Excel to improve my business, but I'm having trouble opening files because it takes so long. ManagerYes, that's right. Many people have the same problem...

2024.10.02

Excel Functions