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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 Fix Missing Sheets in Excel (Step-by-Step Guide)

This article explains how to solve the sheet heading hiding problem in Excel from the options settings. Have you ever had trouble finding a sheet in a file created by someone else? This article is written by the author, who has experience in supporting Excel operations.

2025.06.06

Excel Functions

How to apply mosaic (blur) Excel

When you are preparing a document or manual for external publication, you may need to refer to a web site or a screen where non-public information is visible. In such a case, you would like to put a mosaic like this on the non-public part. We will explain this method in detail in this issue...

2024.07.05

Excel Functions

Forgot Password? How to Remove Read-Only (Write Protection) in Excel

If you forgot your Excel password, don’t worry! This article explains how to remove write protection easily by simply changing the file extension. Learn how to unlock read-only mode fast.

2025.07.12

Excel Functions

How to extract characters before a specific character "LEFT and FIND functions in 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 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.

How to Adjust Column Width and Row Height in Excel (Manual Methods Explained)

Visibility is very poor if the column widths are too narrow to display all of the cell contents, or the row height is too narrow to display the contents. In this article, we will explain how to easily and automatically adjust row height and column width to just the right size. With a macro (VBA)...

2025.05.29

Excel Functions

Automatically create invoices from sales invoices1 Excel (Excel)

There are many useful software systems that automatically output invoices as you record sales data if you pay for them, but many people are unable to install software because they "don't have enough money to pay for it" or "management won't allow it" and are making each invoice by hand...

2024.06.10

Excel FunctionsLet's make an invoice from a sales invoice.

Excel Clipboard Error: “The content cannot be copied because it is being used by another application” — Symptoms and Quick Fixes

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

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)