ac1st21.dll
Overview
Download ac1st21.dll file for free for the Windows platform. This DLL is produced by Autodesk, Inc.. There are currently 2 versions available and the latest version is v21.0.52.0.
If a program or game requires ac1st21.dll, then Windows will check for the .dll file before launching the program. If any issue is detected, it will display an error and the program won't launch. A few examples of the errors are:
- This application failed to start because ac1st21.dll was not found.
- The program can't start because ac1st21.dll is missing from your computer.
- There was a problem starting ac1st21.dll. The specified module could not be found.
- The file 'ac1st21.dll' could not be loaded or is corrupt. Setup cannot continue.
- The code execution cannot proceed because ac1st21.dll was not found. Reinstalling the program may fix this problem.
- ac1st21.dll is either not designed to run on Windows or it contains an error. Try installing the program again using the original installation media or contact your system administrator or the software vender for support.
These errors are displayed when this DLL file is missing from your PC, has issues, or that it is corrupted. In such cases, the solution is to reinstall the DLL file on your computer or place it in the program or game that requires it.
Download
How to Fix ac1st21.dll Errors on Windows?
There are various ways in which you could fix errors for ac1st21.dll. Here are a couple of solutions:
- Download ac1st21.dll from this page and re-install it on your computer.
- Download and place the ac1st21.dll file in the folder of the program or game that requires it.
- Ensure that the application is up-to-date. If not, then download and install the latest update.
- Re-install the application or game.
- Update Windows to the latest available version as well as any drivers required by the program.
How to Install ac1st21.dll on my computer?
There are two ways in which you can install this DLL file on your computer. You can either copy the file to the installation folder of the application that requires the DLL or register it using Microsoft REGSVR. Here are the instructions for both the methods:
Method 1: Copy ac1st21.dll to the application's installation directory
- Quit the application or game that is showing the .dll error.
- Download the DLL file from the Downloads section of this page. It will be downloaded as a zip file.
- Extract the contents of the zip file to any location on your computer.
- Once extracted, you will find the ac1st21.dll file in it. Copy this file and to the installation directory of the program or game that requires it.
- Now launch the application to check if the issue is resolved.
Method 2: Register ac1st21.dll using Microsoft REGSVR
REGSVR is a command-line utility for Windows that can be used to register and unregister DLL files. We'll use this to register the DLL file downloaded from this page.
- Quit the application or game that is showing the .dll error.
- Download the DLL file from this page. It will be downloaded as a zip file.
- Extract the contents of the zip file to any location on your computer.
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Once extracted, you will find the ac1st21.dll file in it. Copy this file to your system directory. The location of the system directory depends on the DLL architecture and your OS:
- If your Windows is 64-bit, then the 64-bit DLL files should be copied to the C:\Windows\System32\ directory and the 32-bit DLL files should be copied to the C:\Windows\SysWOW64\ folder.
- On Windows 32-bit, the file should be copied to the C:\Windows\System32\ folder.
- Now search for Command Prompt, right-click on it and select Run as administrator.
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Type the following command and press Enter: regsvr32 ac1st21.dll
- If registering 32-bit DLL on a 64-bit Windows, then enter the following command instead: regsvr32 c:\windows\syswow64\ac1st21.dll
- Restart your computer and open the application or game to check if the problem is fixed.
