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9 December 2023  John Weaver  Senior Program Developer
 

Summary
When you meet the error Advapi32.dll missing on your computer, you can fix it with the solutions presented in this article. Besides, you can backup the files with Renee PassNow.



Table of contents

table iconI. Why there is an error message of Missing Advapi32.dll?
table iconII. Before repairing the fault, use Renee PassNow for data backup
table iconIII. How to fix Advapi32.dll error in Windows system?
advapi32 dll missing

I. Why there is an error message of Missing Advapi32.dll?

The Advapi32.dll is a Windows system file from the Advanced API Services library, providing advanced API functions. If this file is missing or damaged, it prevents normal application or system startup and triggers an “Advapi32.dll is missing or cannot be found” error.
Advapi32.dll not found
The Advapi32.dll error can occur due to reasons like virus attacks, improper system shutdowns, disk write errors, or file corruption. To fix this, if Windows is running normally, use antivirus software to scan and remove viruses. If an application shows an “Advapi32.dll is missing” error, try uninstalling and reinstalling the application.
If the Windows system cannot run normally, in order to avoid the loss of important data in the device, it is recommended that you use a professional system rescue tool – Renee PassNow to back up the data before repairing the error. Download, transfer or restore data, the functions are more diverse, let’s go to find out together.

II. Before repairing the fault, use Renee PassNow for data backup

1. What is Renee PassNow?

Renee PassNow is a versatile system rescue software. It helps Windows users reset passwords, create new admin accounts, restore disk/memory card data, recover data post-formatting, transfer disk files, and erase or scan disk files. It also fixes Windows system issues like MBR boot records, DBR error parameters, 0xc00000e, startup failures, and black/blue screen problems. Compatible with Windows 10/8.1/8/7/XP/Vista, it caters to various system rescue needs.
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2. How to use Renee PassNow for data backup?

When the Windows system cannot run normally, you can create a startup disk through Renee PassNow, then start the computer through the startup disk, and then use this software to back up the data. Specific steps are as follows:
Step 1: Download and install Renee PassNow on other computers that can log in and run normally, then connect the U disk to the PC, run Renee PassNow, and then check in “Step 1: Choose the creation method” (Create a rescue USB disk) option. (Note: Before performing this operation, please make sure that the important files in the U disk have been saved in other locations, because the operation process will delete all the data in the U disk.)
Step 2: Next, select (x64) or (x86) according to the system type, click the (Download Now) button to download the ISO file, click the (Create Rescue USB) button after the file is downloaded, and click the (Eject USB) button.
made installation usb in renee passnow
Step 3: Connect the created boot device to the computer that needs to transfer data, turn on the computer, and then the shortcut key to enter the BIOS will be displayed on the computer screen (the display time of this interface is very short, maybe only one or two seconds), click continuously BIOS shortcut key to enter the BIOS setting interface, and then set the boot U disk as the first in the boot sequence in Boot Priority, then save the settings and restart the computer.
select boot order
Step 4: After starting the computer from the startup U disk and entering the Renee PassNow program, select the (data backup) option. This option is equivalent to completely cloning the hard disk to other hard disks, so the hard disk capacity for saving backup files needs to be larger.
passnow data backup
Step 5: Select the hard disk to be backed up in the (source) list, select the hard disk to save the backup in the (destination) list, and finally click (clone) and wait for the cloning to complete to successfully back up the computer hard disk files.
Select the hard disk that needs to back up and save data
Step 6: If you only need to transfer some important data in the hard disk, you can choose (Data Transfer).
Data transfer function of Renee Passnow
Step 7: Click on each disk drive letter (C/D/E/F, etc.) to locate files for transfer. It’s recommended to transfer them to an external disk. For instance, to transfer data from C to G drive, select C drive on the upper left, G drive on the upper right, select files in C drive, and click the middle Copy button. To delete a file, select it and click the middle Delete button. Be cautious as deletion is irreversible.
Schematic diagram of steps to transfer data
Tip: If you find any files are lost during the process of backing up or transferring data, please select the (Undeleter) option on the main function interface to perform data recovery operations.
data recovery function in Renee Passnow
After the data backup is completed, you can fix the missing Advapi32.dll error with peace of mind. Let’s continue to learn.

III. How to fix Advapi32.dll error in Windows system?

1. Replace the damaged Advapi32.dll file

We mentioned above that when the Advapi32.dll file is damaged, it may cause the problems shown in the article. Therefore, you can try to replace the damaged Advapi32.dll file to solve the current problem. The specific steps are as follows:
Step 1: Insert the Windows installation disk (DVD or U disk) into the computer. When starting up, press F2 or F10 or DEL or ESC shortcut keys continuously (varies with the computer brand) to enter the BIOS setting interface, set the first boot sequence to Windows installation disk, save the settings and restart the computer. Make the computer boot from the installation disk, and select the (Repair Computer) option on the Windows Installer “Install Now” interface to enter the recovery environment.
windows installation repair your computer
Step 2: After entering the recovery environment, select (Troubleshooting)>(Advanced Options)>(Command Prompt).
command prompt
Step 3: In the command prompt, enter the following command (D:\i386\advapi32.dl_C:\Windows\system32\) (where D:\ represents the drive letter of the installation disk; C:\ represents the drive of the disk where Windows is installed number) and press (Enter), then press (Y) and press (Enter) when asked if you want to overwrite the file. After the command is executed, restart the computer to check whether the problem is resolved.
Enter the corresponding command line

2. Use the SFC command to repair damaged system files

The SFC command can scan all protected system files and try to fix the problem, and Advapi32.dll is also a system file, so we can try to use the SFC command to fix the Advapi32.dll error. The specific steps are as follows:
Step 1: Insert the Windows installation disk (DVD or U disk) into the computer. When starting up, press F2 or F10 or DEL or ESC shortcut keys continuously (varies with the computer brand) to enter the BIOS setting interface, set the first boot sequence to Windows installation disk, save the settings and restart the computer. Make the computer boot from the installation disk, and select the (Repair Computer) option on the Windows Installer “Install Now” interface to enter the recovery environment. Click on Troubleshoot, Advanced Options and Command Prompt.
Step 2: In the command prompt, enter the following command (sfc /scannow /offbootdir=D:\ /offwindir=D:\Windows\) (D: is the drive letter of the disk where Windows is installed, and D:\Windows is the Windows file position of the folder) and press (Enter). After the command is executed, restart the computer to check whether the problem is resolved.
Enter the sfc command line

3. Use the Chkdsk program to check the hard drive

The Chkdsk tool is a command for the Windows system to check the current status of the disk. It can display the disk status, memory status and the discontinuous number of specified files in the specified path, and can also repair disk errors. It is very simple to repair the faulty hard disk with the help of Chkdsk tool. The specific operation steps are as follows:
Step 1: Insert the Windows installation disk (DVD or U disk) into the computer. When starting up, press F2 or F10 or DEL or ESC shortcut keys continuously (varies with the computer brand) to enter the BIOS setting interface, set the first boot sequence to Windows installation disk, save the settings and restart the computer. Make the computer boot from the installation disk, and select the (Repair Computer) option on the Windows Installer “Install Now” interface to enter the recovery environment. Click on Troubleshoot, Advanced Options and Command Prompt.
Step 2: In the command prompt, enter the following command (chkdsk C: /f) (C refers to the disk number of the hard disk to be repaired; /f will try to repair all errors found on the disk), and press the (Enter) key to Fix bugs. When the command prompt displays a confirmation message, press the (Y) key to schedule CHKDSK to scan your C drive system drive the next time you restart your computer. After the hard disk failure is repaired, restart the computer to check whether the problem is resolved.
Enter the chkdsk command line