SQL: Object reference not set to an instance of an object. Error code 0x84B10001.

SQL Server Setup has encountered the following error: Object reference not set to an instance of an object. Error code 0x84B10001.

After installing SQL so many times, we encounter the following error (error code 0x84B10001). To find the possible solutions you can follow the following steps.

Solution #1: Locate the following file “Machine.config”. Without the quotes.

First you have to know what the Machine.config file is: This file, which is stored in the operating system, contains the configurations that are applied throughout the computer. Within this file you can find configuration settings for machine-wide assembly linking, ASP.NET, and also integrated remote channels. To know more information about this file you can visit the official Microsoft website.

Note: First of all, you must make a backup copy of the Machine.config file in case of some problems, you as a user can replace the file with the original.

First step: Find the path in Windows Explorer.

“C:\Windows\Microsft.NET\Framework64\v2.0. 50727\CONFIG\machine.config”.

Second step: Open the “Machine.config” file using the notepad text editor and use the search tool to locate the following text “<system.serviceModel>” without the quotes in the following image we will show you the example.

Third step: From point number 1 to 2 of the “<system.serviceModel>” tag, delete all the lines found in the content, as seen in the image.

Fourth step: Save the “Machine.config” file & try installing SQL Server again.

Solution #2: Creating an administrator user.

Sometimes these errors occur because the user where the installation is executed does not have the necessary privileges to proceed with the installation.

Create a Windows account and assign that account's local administrator access in the local administrators group, then try installing SQL Server again.

Solution #3: Clean the disk of temporary files or cache.

Clean unnecessary data and the disk cache, it may be that one of those files is preventing SQL from being installed, since it creates temporary files for its installation.

You must locate the folders where these files are stored and maintain the operating system.