Error 1001 when uninstalling or installing a program: A 1001 error may occur when attempting to update, repair, or uninstall a specific program on Windows. The problem is usually due to the fact that the previous installation of the program is damaged. There are so many reasons behind setup error 1001 like damaged or corrupt system files, missing DLL file, system recovered after virus / malware attack, incomplete software installation, incorrect PC shutdown , incorrect entries in the registry file, etc. Here I give a useful way to fix the installation error 1001. Try each method one after the other and determine if the error has been corrected or not.
Method 1: Fix using Advanced System Repair Tool
The majority of reasons the program failed are corrupt or damaged system files, such as DLL files, EXE files, system files etc. There are thousands of tiny system files for specific tasks. If any of the files are overwritten, deleted, or corrupted, you may get the Windows Installer 1001 error. Download and install Advanced System Repair Tool and analyze your PC. It has big database with 25 million files. It will find all damaged or deleted system files and reinstall them with the new one. After having optimized with Advanced System Repair Tool, try to install the software again.
Method 2: Run System File checker.
The System File Checker is a built-in Windows tool that scans entire system files and repairs them if a problem is detected. It is very easy to use this tool. Just open the command prompt as an administrator, type the following command, and press Enter.
Method 3: Apply Clean Boot
You can also try clean booting to install the software. When you open your PC in the minimum boot mode, the system boots only with minimal services and tasks. Here is the detailed guide to starting your PC in clean boot mode.
Method 4: System Restore
If you have created the system restore point earlier than this, this solution can change the life of your PC.
- Open the Start menu and type System Restore in the search menu.
- Select Create System Restore Point from the Find menu and open it.
- Now go to the System Protection tab and click the System Restore button.
- Now follow the instructions on the screen, select the appropriate recovery point, and click Next.
- Let the process finish and restart your PC. Most of the time, by installing and uninstalling various software, replace the system dll file and generate error 1001. But when you restore your PC with the same point, the problem is solved.