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[Solved] 1601 error from MSI.DLL 4.5 when trying to install programs.

1601 error from MSI.DLL 4.5 when trying to install programs.

I'm getting a 1601 error from MSI.DLL 4.5 when trying to install a couple of software programs.
The installion fails.Has anyone dealt with this issue?

Keys to the Problem 1601 error from MSI.DLL 4.5 when trying to install programs.

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1.       Is the issue specific to any particular program?
2.       What is the exact error message you get?
3.       Have you done any recent changes to the computer prior to the issue?
I would suggest you to perform the following methods and check if it helps.
Method 1: Fix problems with programs that can't be installed or uninstalled
Run Microsoft Fixit mentioned in the article.
Method 2: Error "Windows Installer service could not be accessed" occurs when you try to add or remove a program in Windows XP or Windows Server 2003
Registry disclaimer: Important this section, method, or task contains steps that tell you how to modify the registry.
However, serious problems might occur if you modify the registry incorrectly.
Therefore, make sure that
you follow these steps carefully.
For added protection, back up the registry before you modify it.
Then, you can restore the registry if a problem occurs.
For more information about how to back up and restore the registry, click the following article number
to view the article in the Microsoft Knowledge Base:

Tweak IE Options
  • Open Internet Explorer.
  • Go to "Tools > Internet Options > Advanced Tab".
  • Uncheck "Enable third-party browser extensions".
  • Click "Apply".
  • Reboot your computer.

Another Safe way to Fix the Problem: 1601 error from MSI.DLL 4.5 when trying to install programs.:



How to Fix 1601 error from MSI.DLL 4.5 when trying to install programs. with SmartPCFixer?

1. You can Download Error Fixer here. Install it on your computer. When you open SmartPCFixer, it will perform a scan.

2. After the scan is done, you can see the errors and problems which need to be repaired.

3. The Repair part is done, the speed of your computer will be much higher than before and the errors have been fixed. You can also use other functions in SmartPCFixer. Like dll downloading, junk file cleaning and print spooler error repair.

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