Hi, Thank you for posting in Microsoft Community. We understand how you feel about the situation. We're sorry for the trouble. Try the steps below and check if it helps. Step 1: Run the software setup file as an administrator and check if it helps. Right click on the setup file of the software that you are trying to install.
Step 2: a. Click Start, type "Local Security Policy" without quotes and press enter. Click on Software Restriction Policies. In the right pane, double click on the "enforcement". Click Ok and restart the computer and check if the issue is fixed. Hope this helps. How satisfied are you with this reply? Thanks for your feedback, it helps us improve the site. In reply to A.
User's post on February 16, I did not find this helpful. I tried step 1 a and b. Did not work. I get several links, but none of them say "Software restrictions Policies" I tried control panel Security and maintenance and tried "change user account control settings", which has a shield next to it, and nothing happens.
I'm currently working on the back-up restore part, but when I wanted to start on that I came across another issue. Time Machine hasn't been making back-ups since High Sierra was installed! It couldn't. If I told it to make a back-up it would start the process, say "preparing" and hang there. I was also unable to open the back-up folder on the Time Capsule, I could connect to the Time Capsule, saw the back-up folder for my iMac, but opening it was impossible.
So I'm hoping to restore that back-up overnight and wake up to a fully functioning machine, but I am afraid it won't do anything and I'll have to go the nuclear route tomorrow and do a clean install Oct 3, AM. Thanks for the follow up and for the the detailed explanation of the steps you have taken with Apple to fix this.
Despite talking to two senior advisors and having input from an engineer, I am basically getting nowhere. I had an almost laughable reply today from the engineer who said they couldn't support whatever problem I was having with VMWare. I had to point out yet again that the issue is with OS Incredible and infuriating. From what you describe, this doesn't look easily fixable at all. I really hope it is as the thought of a clean install sends shivers down my spine. I'll let you know if I actually manage to make any progress.
What you are describing definitely sounds like a bug. Supposedly, you get an alert and then you have 30 minutes to approve the extension. If an app later tries to load the extension again, you will get another 30 minute window to approve, but no more alerts.
Supposedly, any extensions that were already installed before the upgrade will be automatically approved. In practice, in For one thing, Apple is expecting 3rd party kernel developers to properly handle a failure to load the kernel and then give the user some feedback. Good luck waiting for that to happen. I don't necessarily disagree with my interpretation of Apple's approach. A kernel extension is really a modification of the operating system by someone who, in almost all cases, doesn't know how to do that properly.
For example, when Parallels stopped working in I run Mac guests exclusively. That ran fine for a few years but Yosemite and later versions were virtually unusable in a VM. I was just blown away by how much faster it is. And it is free, because I only run Mac VMs. I'm not going to apologize for Apple or even recommend High Sierra.
I'm still running Sierra on my primary machine and I intend to continue doing that until June, at least. I didn't update to Sierra until May of this year and even then I got hit by a nasty bug that wasn't fixed until Apple has a huge amount of leverage due to their total control over the platform.
You can complain about it if you want, but it won't do any good. Whether by accident or design, this is way things are going. It is better to support the developers who recognize this and are trying to continue to support their users in the environments of the future. I have upgraded my VMWare Fusion to Oct 3, PM. Then I restored my iMac from that same back-up.
I wasn't expecting this to solve my problem, but the Apple Tech suggested it for if I had the time and was curious what there results would be, so why not? The iMac restored overnight and I just woke up to an iMac that was exactly the same as it was yesterday, still not able to allow system extensions in 'Privacy and Security'.
So that was a waste of time. But hey, new datapoint. My Time Capsule has back-ups going back a few years, with the most recent being about an hour before installing High Sierra. So at the moment I'm restoring that back-up. If my research is correct, restoring this should give me back Sierra on the machine, not High Sierra. So this should basically temporarily solve the issue. If that solves it, yay.
If I get the same issues again, the only option left is the nuclear one. Clean install and pluck all my files from the new Time Machine Back-up I made yesterday. I restored the week old Time Machine Back-up, from before High Sierra was installed, that resulted in a perfectly working machine, but with outdated data. After making sure everything worked as it should, I went to the App Store and downloaded High Sierra again and installed it. First thing I tried was installing the drivers again, and three guesses what happened.
System Extension was Blocked, no Allow button, back to square 1. Played around with it a bit and it was exactly the same, not only the extension problem, but Time Machine couldn't connect to my Time Capsule and DMGs started making Finder Crash again.
So MacBook to the rescue. First thing I did was get my drivers, installed them, got the System Extension Blocked message, headed to Security and Privacy and lo and behold, there was an Allow button! Messed around with DMGs a bit, seemed to work fine, so I connected the USB drive with my latest Back-up after HS install and started putting all my files back manually, luckily that's an easy process since you just get your file structure in the back-up, so it's just a matter of dragging and dropping files back to where they should go.
Until last night. I was mostly done putting everything back, my files are back on there, the smaller apps were moved or redownloaded, just had a few more to go when I noticed an MacOS update on my macbook. So I headed over to the App Store on the iMac, no update.
Clicked the tab again "Error, could not connect You may find that USB devices that match the allowed device classes are incorrectly blocked.
In the device configuration profile, add the class GUID to the Allow installation of devices using drivers that match these device setup classes setting.
If the issue persists, repeat steps 1 to 3 to add the additional class GUIDs until the device can be installed. The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.
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