Windows 10: What do these errors mean now

In the event manager

DmWapPushService: Failed to register WNF with EventAggregator for WAP messages received by SMS Router. Result: (0xC0020036).


Access to drivers on Windows Update was blocked by policy

:)

 

What do these registry errors mean?

I use ccleaner and as you probably know this has a tool to fix registry issues.

-> This is not quite correct. CCleaner has a tool that tries to fix what it claims are registry issues.

I don't want to mess with the registry more as I don't really understand it.

-> Good thinking. At the same time you should not let CCleaner mess with any of the more than 500,000 entries that the average registry has. It cannot possibly know what the correct values should be.

CCleaner is good at finding countless irrelevant registry errors and making a big noise about them in order to impress users, e.g. list registry keys that point at non-existing files. It's like your diary having an address for a deceased person. So what?
Is your diary corrupted?

When you allow CCleaner to fix things then it is a game of luck. Either the there is no visible effect or you end up with a damaged registry. The registry restore function is the only function I would use but then the native System Restore facility will
do this too.

In other words, I would never use any registry cleaning or optimising tool. They are a waste of money and sometimes dangerous.

If it ain't broke, don't fix it.

 

What do these registry errors mean?

Honestly, the best option is not to use a Registry Cleaner, they can brick your system as easily as they do anything else.

Without an in-depth knowledge of your system, the software installed on it, the software that has been uninstalled, it would be virtually impossible to say which registry entry(s) is causing this issue . . .