ReBizRU

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

Excel to allow entry of items not in the pull-down (drop-down) list

When using the pull-down entry function in Excel with the default settings, if you try to enter an item that is not in the list prepared for entry, an error message like the one shown below will appear and you will not be able to enter the item. In such a case, you can either allow any item to be entered, or display a message...

2025.06.11

Excel Functions

How to display file extensions [Windows 11].

For the beginning computer user, there may be little trouble with file extensions not being displayed. However, once you have started to tinker with computers to some extent, there are situations where you may need to change the file extension or process a file differently depending on its extension, so this...

2024.10.08

Windows

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.

How to Extract Data Using the VLOOKUP Function in Excel

Being able to use the VLOOKUP function will expand the range of data handling, and will help you be seen as an intermediate Excel user by beginners. In this article, we will show you how to use the VLOOKUP function, and how to use the INDEX and MATCH functions to compensate for the weaknesses of the VLOOKUP function...

2024.07.04

Excel Functions

How to Convert Excel to Google Sheets (Step-by-Step Guide for 2025)

This article provides a detailed, beginner-friendly explanation of how to convert Excel files into Google Sheets. Are you struggling because a client has asked you to submit your data in Google Sheets format? The truth is, the conversion process is easier than you might think. Written by someone with experience in streamlining IT workflows, this guide walks you through the steps clearly and practically.

2025.06.05

googlesheet

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

Automatically create invoices from sales invoices 2 Excel (Excel)

Creating Invoices Automatically from Previous Sales Statements1 Continuing from Excel (Excel), we will create an invoice. Putting the details on the invoice (using a function)*Using the "FILTER" function using Spil*This one uses the Spil function, so you will need to use Microsoft365 or E...

2024.06.10

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

Easy with Excel and Word! Mastering the art of address printing that anyone can do!

Have you ever had to worry about writing addresses for New Year's cards and summer greeting cards? Writing dozens of cards by hand is a lot of work, but buying specialized software is also a bit expensive.... Everyone has experienced this dilemma at least once. But the truth is, your computer...

2024.09.22

Excel Functions

VLOOKUP function gives #N/A or #REF!

The VLOOKUP function is a very useful function for handling data, but many of you may have experienced that once you get stuck in the error swamp of #N/A or #REF! In this article, we will discuss how to use the VLOOKUP function to get rid of the #N/A and #REF!

2024.07.05

Excel Functions