The “Windows Installer service could not be accessed” error message shows
up. This problem started once I downloaded a registry cleaner. Now I’m not an
able to use an Adobe file or download it.
In this excerpt from Answercast #88 I look at a problem on a computer after running a registry cleaner.
Error after running registry cleaner
Well, I do have an article “How do I fix the Windows Installer service could not be accessed?” and I’ll certainly start by pointing you there.
But, what I want to do is point out that this happened after you ran a registry cleaner.
This is exactly why I don’t recommend you run registry cleaners. They are simply too dangerous. They can simply cause too many problems of unknown origins.
Fully system backup
Now, what I hope you did was to have taken a full system backup prior to running the registry cleaner. If you had, you would simply be able to restore your machine to the state that it was in prior to running the registry cleaner and get on with your life.
If you are running the registry cleaner to resolve a specific problem, then let’s diagnose that problem instead of running a registry cleaner.
Periodic registry cleaning?
Finally, if you’re running a registry cleaner just because you think it’s good to clean your registry periodically? Well, this is why it’s not.
I actually have an article, “What’s the best registry cleaner?” and in my opinion the best registry cleaner is no registry cleaner at all. Again, specifically because this kind of thing happens.
(Transcript lightly edited for readability.)
Next from Answercast 88- How should I password protect an external drive?