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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 pass arguments between procedures ByRef,ByVal Excel(Excel) Macro(VBA)

This section describes how to pass arguments when procedures are separated. In the article below, I mentioned that it is easier to read and process the code by separating the procedures...

2023.12.27

Excel Macro (VBA)

How to Extract Text After a Specific Character in Excel Using RIGHT and FIND

Struggling to extract text after a specific character in Excel when data lengths vary? This article explains how to combine the RIGHT and FIND functions to solve the problem—taught by an experienced Excel formula expert.

2025.06.18

Excel Functions

Specific ways to present Excel skills that are useful in job interviews.

You use Excel in your daily work. But are those skills that allow you to say, "I'm good at Excel," really applicable in the job market? Many of us learn the basics of Excel in new employee training and use it in our daily work. Sure, we enter formulas, create graphs...

2024.09.29

change of occupation

How to Instantly Convert Address Numbers to Kanji Using SUBSTITUTE in Excel.

When printing addresses on envelopes using the address list of a New Year's card or a customer list, for example, horizontal envelopes are written in arithmetic (Arabic) numerals such as "1, 2, 3", while vertical envelopes must be written in Chinese numerals such as "1, 2, 3". Substitute the numbers...

2024.09.20

Excel Functions

How to Clear Sheet Data with Excel VBA: Simple Macro Tutorial for Beginners

Tired of manually deleting large amounts of Excel data? This article explains how to delete sheet data using VBA macros with ClearContents, Clear, and Delete—completing the task in seconds.

2025.06.18

Excel Macro (VBA)

Macro suddenly stopped working Excel(Excel) Macro(VBA)

I have been experiencing a phenomenon around me where macros suddenly stop working after having been used normally until yesterday. The phenomenon is that I had set up a macro that is activated by double-clicking on a specific cell, but it no longer responds when double-clicked. I went to "Develop..." to check the contents of the macro.

2024.02.26

Excel Macro (VBA)

How to Auto-Resize Excel Columns and Rows with VBA Macros (Copy-Paste Ready)

Struggling with cell misalignment or manual resizing in Excel? This article shows how to efficiently adjust row height and column width using VBA—solved in just a few lines of code by a seasoned macro expert.

2025.06.27

Excel Macro (VBA)

Switch between manual and automatic recalculation methods in Excel (Excel)

Excel, which contains a large number of formulas, will recalculate each time you perform some operation, and you will not be able to perform the next operation until the calculation is finished. If you feel that Excel is too slow, you can stop the recalculation to make it run more smoothly. Also, for some reason without realizing it...

2024.05.30

Excel Functions

Error display "#DIV/0!" Meaning and Countermeasures Excel

Error messages are unavoidable when dealing with Excel, and you may be surprised when they suddenly appear. If you know the meaning of the error and what to do about it, there is nothing to be afraid of. Meaning of "#DIV/0!

2024.05.30

Excel Functions