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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

How to install .NET FrameWork

What are the versions of the .NET Framework? NET Framework (DotNet Framework) comes in various versions (types of toolboxes) with slightly different tools inside...

2024.10.01

Excel Macro (VBA)

Measure macro processing time Excel(Excel) Macro(VBA)

When trying to speed up a macro, it is first necessary to be able to determine how much time was saved before and after the improvement, and how much time was saved or not. To do this, it is necessary to be able to measure the time. In this article, we will show you how to do this. In this article, we will discuss the process of...

2024.01.03

Excel Macro (VBA)

How to Create a Petty Cash Log in Excel (Invoice-Compliant Template Guide)

Many companies and sole proprietorships use petty cash to keep track of personal and company finances. However, it is very time-consuming and error-prone to keep balances and to post the information in the cash book to the accounting system...

2024.05.30

Let's Make SeriesLet's make a petty cash book.

Forgot Password] How to remove sheet protection Excel (Excel)

I have a "sheet-protected" Excel file that I really need to unprotect, but the person in charge of applying the protection has already left the company or lost the memo, and I don't know the password. In such cases, do I have no choice but to give up? No, you can...

2024.10.29

Excel Functions

How to extract characters before a specific character "LEFT and FIND functions" Excel (Excel)

As shown in the figure below, if there is extra data after the string and you want to extract only the string to the left of the extra data, you cannot simply use the LEFT function alone because the number of characters is not constant. Function to extract the left side of the "¥" mark in cell "A2" = LEFT(A2,FIND(...))

2025.02.19

Excel Functions

How to use the input screen "InputBox" Excel Macro (VBA)

If you want to use values or arbitrary characters that do not exist in Excel, the "InputBox" is useful to easily create an input screen during macro execution. In this article, we will briefly explain how to use this "InputBox".

2025.02.21

Excel Macro (VBA)

Fix Excel Clipboard Error: 'The Clipboard Cannot Be Emptied' or 'In Use by Another Application'

Frustrated by the "File is in use by another application" error during copy and paste? This article provides a detailed explanation of the issue along with both quick fixes and long-term solutions to resolve it effectively.

2025.06.18

EdgeExcel Functions

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

What is an Excel (Excel) Macro (VBA) Module and Procedure?

When dealing with VBA, you will come across terms such as modules and procedures, which are not used in everyday life. So, here I will explain about modules and procedures. Modules include standard modules, book modules, sheet modules, fo...

2023.12.27

Excel Macro (VBA)