When trying to install some various programs, even some are non Windows, some users keep on getting an error code 1601 message saying something like this “Error Code: 1601 Windows Installer could not be accessed when attempting to install various programs”.
According to Microsoft forums, the Windows installer errors code is mainly caused by two reasons: one is that you are trying to install a program in safe mode; the other is that the Windows Installer is not properly installed on your PC. Anyhow, here you will get simple solutions to solve this Windows installer error code 1601 easily.
If you are at the first time to get the error code 1601, directly restart the computer and try another installation job again to see whether it solves the problem. In many cases, a temporary issue within the computer itself can bring in the happening of this Windows installer error. However, it is keeps on appearing over and over again as you install or uninstall a program, it might be a sign to tell you some unknown severe errors on your PC.
Then, you need to check and make sure the Windows Installer is properly installed and working correctly on your computer. To do this, follow these steps:
*Go to Start menu, type Services in the search box and press Enter.
*Scroll down to find the Windows Installer in the appearing list. Once you find it, double-click it.
*Check and make sure the service is started under “Service status” on the General tab.
*If the Windows Installer service is not already running, click Start, and then OK under Service status and follow the following steps to unregister & re-register it.
How to unregister and re-register the Windows Installer
*Click Start menu, type MSIEXEC /UNREGISTER in the search box, and then click OK.
*Then type MSIEXEC /REGSERVER in the search box again, and then click OK. After running this command, the Windows Installer will be re-registered successfully on your PC.
* Now, try to install the program again to see whether the error code 1601 has been solved or not.
If the Windows Installer error code 1601 still appears after the above unregister and re-register process, there might be some file corruptions existing on your PC. At this time, you should run a System File Checker scan to check and replace the missing/corrupted files on your PC. To do this, just go to Start, Run, type “sfc/scannow” in the box and press Enter to continue. Then, the file checker will thoroughly scan your whole system and automatically replace the missing/corrupted/broken system files. By the way, this simple process can also help to fix some errors like DriHWP32.dll not found error.
Sometimes, an error code 1601 will be caused by a virus infection. Once get onto the computer, viruses are able to stop you from installing some desired programs by removing some files, resetting some default PC settings… It is best that you can update your computer virus database to the latest one, and then completely scan the whole PC for any potential & existing threats. By the way, to realtime secure the PC, you should let your antivirus antispyware program running in the background all the time. This way, your computer won’t be exposed to some unknown threats.
Finally, to fix a Windows installer error 1601 you still have to repair computer registry errors. We know that no matter whenever you install or uninstall a program, it will automatically add or remove corresponding entries to this database. However, not all such entries will be completely removed as you uninstall a program, which means some related entries will be leftover in this database as you uninstall a program. Those entries may stop you from running the computer, or even install a small program successfully. To successfully install a program without an error code 1602, it is best that you can first thoroughly scan and fix all detected registry errors. Once the system has no problem to locate the required entries to install your programs, you will be able to install all programs correctly.
In a word, it is quite common for you to receive a Windows Installer error code 1601 in installing a program. However, the simple above solutions help you to easily troubleshoot the error and repair it immediately for you. So, why not starting performing them from now on if encounter difficulty in installing a program???
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