Do You Know What to do When You Have issues With Missing ac1st16.dll Files?

Fix Ac1st16.dll Error

Overview - What is ac1st16.dll?

Ac1st16.dll is a DLL file (dynamic link library file) that is almost exclusively used by AutoDesk applications. The DLL file is used by AutoDesk applications to view and display complex 2D and 3D drawings. It is also accessed when converting other types of file into AutoDesk files.

AutoDesk Inc. creates and supplies leading CAD software such as AutoCAD, AutoCAD LT, 3ds Max, Inventor, Maya and Revit Architecture. All of these programs may use ac1st16.dll as part of their rendering modules. There are also a number of free DWG file viewers available such as DWG TrueView that also uses ac1st16.dll. Ac1st16.dll is not harmful and is a legitimate file used by applications created by AutoDesk Inc.

Common Error Messages Seen in Connection With ac1st16.dll

If the file ac1st16.dll has been deleted or is either corrupt or damaged, you may see any one of the following error messages:

  • The file ac1st16.dll is missing
  • Cannot start application. A required component is missing: ac1st16.dll. Please install application again
  • Ac1st16.dll not found
  • This application failed to start because ac1st16.dll was not found. Re-installing the application may fix the problem

In most cases ac1st16.dll is loaded when the relevant AutoDesk application is started, in which case you will see a WinOS error message and the application will fail. In other cases, the application may start normally but then crash at the time the ac1st16.dll file is called. Both circumstances indicate that the file is either damaged or missing.

Solutions - How to Restore ac1st16.dll

In most cases, the file ac1st16.dll is installed along with an AutoDesk application such as AutoCAD. If you start receiving errors, then you can run the repair utility that comes with those programs. To invoke the repair facility, go to the "control panel" and choose "add remove programs". Look for the relevant application on the list and you will be given an opportunity to repair or uninstall. Choose "repair" and prepare to have your application CD or DVD ready.

If repairing your AutoDesk application doesn't solve the problem then you can try one of the following solutions:

  1. Many errors such as missing files are caused by users inadvertently deleting them. If this has occurred, the deleted file ac1st16.dll will be in the recycle bin. To recover a deleted item, right-click on the file and choose "restore".

  2. A virus program may have inadvertently recognised the file as a virus. If this has happened, it may have quarantined the file. Depending on your software, it may be possible to recover the file from quarantine. If not, you may have to reinstall your software.

  3. If repairing your installation of AutoCAD or other AutoDesk application doesn't solve the problem, then you may have to do a complete reinstall of the software. The best way to do this is to uninstall completely before rebooting your computer, and then running through a complete install again. This will repair damaged DLL files that are needed for the software to run correctly.

How does it fix all this?

Still Confused?

Didn't find what you're looking for?
Need more help?
Submit a support ticket