After investigating this issue, we discovered that there are actually several different underlying causes that might be at the root of this startup error. Here are several scenarios that you should consider: Now that we went over every potential culprit with the possibility of triggering this issue, let’s go over every verified fix that other affected users have successfully used to get to the bottom of this issue. 

1. Delete the Autorun key via Autoruns

If you’re experiencing startup errors linked to a particular file, your security suite may have deleted the malicious file that was a component of the infection, or there may be a remnant file that keeps getting called during startup even though the parent application is no longer installed on the computer. Note: When dealing with infections, it’s not uncommon for some security suites to miss some files. Even though a malicious file has been destroyed by a security program, startup items and registry keys can occasionally still be found on the system and cause the malicious file to run. Windows will automatically display a pop-up error whenever this occurs. There are a few approaches you can take in order to resolve an AutoIt Error ‘Line 0: Error, but let’s choose the simplest one. Note: Microsoft-approved software called Autoruns can locate, group, and remove unnecessary runonce, run, startup directories, and registry keys. In our situation, we may use it to find and delete the startup items (or registry keys) that are still using the deleted file. Here is a basic tutorial on how to set up and use Autoruns to fix Line 0 startup errors: Continue to the next method below if the problem is still unresolved or if you want to try an alternative strategy.

2. Eliminate a potential virus threat

Another thing that you should consider is a potential malware or virus infection that has successfully made its way among your Windows files. If you have an Antivirus, trigger a security scan and see if it manages to pinpoint and eliminate a virus infection. Additionally, you should also take the time to deploy a Malwarebytes scan in order to go after pesky adware programs that are able to camouflage themselves as legitimate system processes.  As an extra security layer, you can also try running the Microsoft Safety Scanner in Safe Mode. By doing this, you can use the most potent virus-removal tool Microsoft has created without worrying about meddling from third parties. The following is a fast guide for using Safe Mode to launch the Microsoft Safety scanner: If this approach wasn’t successful for you, try the next method below. 

3. Perform a clean boot

The “AutoIt Error Line 0” error code could be a result of a disagreement between an application or service and one or more Windows startup process. You can force Windows to boot with only the necessary startup apps and drivers to see if this is the case. This kind of startup (clean boot) will assist you in finding any software conflicts that may be the root of this specific problem. Here are the steps to follow in order to clean boot Windows and determine whether a third-party startup item or service is to blame for the startup error: Move on to the next technique below if this method has established that no application, service, or procedure from a third party is the source of the problem.

4. Deploy SFC and DISM scans

Affected people advise you to examine the faulty system files to discover if any malicious files are there. Corrupted files can result in issues with Windows like this one. This can occur at any time for unidentified reasons, but they are small ones that are simply fixable. By checking your computer for damaged files using the Command Prompt with administrator rights, you can resolve this. Pasting some commands that will complete the task will make it easy to accomplish this. Run SFC (System File Checker) and DISM (Deployment Image Servicing and Management) scan quickly one after the other to do this. You need to restart your computer after the procedure is finished to finish it. Make sure you are linked to a reliable internet connection before moving on to the procedures of this approach. Here are the procedures you need to do in case you don’t know how to scan your system for corrupted files: Continue to the next potential solution below if this strategy didn’t resolve your problem.

5. Clean install or Reinstall Windows

If you’ve read this far and you’re still getting the same ‘Line 0: Error Opening the File’ error, you obviously have a serious corruption problem that can’t be fixed in the usual way. To ensure that all instances of faulty system files are eliminated in this situation, you must reset all Windows components. The radical option, a clean install, which accomplishes the task but also deletes all personal data, including programs, games, media, and documents, is the one most users opt for. You should choose a repair install if you wish to take a less drastic action that will allow you to update your Windows components without harming any of your personal stuff (games, apps, images, papers, etc.). You’ll be able to keep all of your personal information via this process. If you want to carry out a repair install, go to this document for detailed information on how to do so.

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