If Bluestacks is still not working on Big Sur, you might have to reinstall Bluestacks and other required components. BlueStacks is a popular Android emulator, but many users reported that BlueStacks is not opening on Mac Big Sur. My bluestacks not working on macos bigsur beta version 11 I thought beta could be good but now it is giving me many problems, but the most annoying is the android emulators. I cant open bluestacks it says system extension blocked and allow button is not coming in the system preferences and nox gets stuck at 99 and the csrutil hack on bluestacks.

In macOS Catalina, when my enterprise app (MyApp) tries to access Desktop folder first time, user would get prompt message '<MyApp> would like to access files in your Desktop folder' and once user clicks OK, MyApp entry can be seen in System Preferences -> Security & Privacy -> Privacy -> Files and Folders and MyApp will be able to access Desktop folder without any issues.
With Big Sur Beta, I don't see above prompt and I can't also manually add/update MyApp entry in System Preferences -> Security & Privacy -> Privacy -> Files and Folders. The only entry I can see for MyApp is in System Preferences -> Security & Privacy -> Privacy -> Full Disk Access which is disabled by default. Once I manually enable this FDA (Full Disk Access) setting, MyApp starts working properly.
Since I couldn't get much related info from Beta release notes, I would like to know whether there are major changes w.r.t. app access in Big Sur? Is FDA enable the only option for app access or can we have more granular control (i.e., allow access only to Desktop folder)?
Thanks

Big Sur is a terrific update to macOS. But, like any new operating system, it’s not without its problems. For example, Catalina caused many problems, some of them serious, for many users. Thankfully, for most of us, the problems we’re likely to run into are much less serious and usually have a straightforward fix. In this article, we’ll examine some of the most common macOS Big Sur issues and fixes.

12 macOS Big Sur issues

In this blog post, we’re covering the issues that may occur during Big Sur installation and after you've upgraded your Mac. If you’re interested in resolving a particular issue, just go through this list and choose the one that relates to you:

1. macOS Big Sur won’t download

If you see a message while you’re downloading Big Sur that says, 'macOS Big Sur download has failed,' there could be a number of reasons. Here’s what to do when macOS Big Sur won’t download.

Check your Internet connection.
Check Apple’s system status page. It could be that the download server is down or is very busy, and that’s why your download failed.
Make sure you have enough free space. Go to the Apple menu and choose About this Mac. Click on the Storage tab. You should have at least 16GB available in order to install Big Sur. If not, you’ll need to delete files.

Have you got enough free space?

It can be difficult to decide what files to remove and what to keep. However, there are many files on your Mac that take up several gigabytes of space that you probably don’t even realize are there. These include temporary files, cache, language support files, and many others. CleanMyMac X can identify those files and allow you to remove them with a couple of clicks, potentially clawing back gigabytes of space.

CleanMyMac X has a free version you can try, and this app is notarized by Apple.

More ideas when macOS Big Sur won’t download

Try connecting to your router with an Ethernet cable instead of by wifi if you can.
Look for the unfinished download file. Check your Downloads folder and Applications folder. When you find it, drag it to the Trash, empty it, restart your Mac, and try again.

2. macOS Big Sur won’t install

If the download completes successfully, but macOS Big Sur won’t install, there are a few things you should try.

Reboot your Mac in Safe Mode by holding down Shift while it boots. Then try and install Big Sur again.
Reset NVRAM. Shut down your Mac. Boot it while holding Cmd + Option + P + R. Release the keys when you hear the startup chime or see the Apple logo on screen.

Also, double-check that your Mac is compatible. The list of Macs on which Big Sur is supported is below:

Any Mac Pro or iMac Pro
MacBook Pro and MacBook Air 2013 and later
iMac and Mac mini 2014 and later
MacBook 2015 and later

If you see the 'Installation failed: an error occurred while installing the selected updates' message, the first thing you should do is restart your Mac. If this doesn't help, the problem is probably on Apple's side. Wait for some time, and try installing the macOS Big Sur again.

3. macOS Big Sur freezing

Your Mac freezes after the upgrade? Your apps and programs can actually be the reason why macOS Big Sur is freezing.

To quit the unresponsive app, press Command-Option-Esc. This will initiate a Force Quit menu. Click the app that makes your macOS freeze (it will usually have not responding status) and press Force Quit.

If the problem persists, running CleanMyMac X can help fix performance issues, including freezing. Here’s how you can quickly get your Mac back to normal:

Download CleanMyMac X (a free trial is available).
Install and launch the app. Go to the Maintenance feature.
Check the boxes next to the processes you want to run (we recommend selecting the first four fixes and Repair Disk Permissions).
Press Run.

CleanMyMac X is not a magic pill for all Mac problems, but it does fix things sometimes. It’s especially useful when you have a lot of conflicting software and want to clear up things a bit.

4. macOS Big Sur setup fails

This error occurs after your Mac has updated to Big Sur, but during the setup process. Here’s what to do when macOS Big Sur setup fails:

Hold down the Power button to force your Mac to shut down.
Press the power button again to start it up. It should now boot into Big Sur.

5. macOS Big Sur won’t boot

Bluestacks not working on mac big sur android

If you’ve successfully installed macOS Big Sur, congratulations! You’ve cleared the biggest hurdle. However, you may still run into problems, one of which might be that Big Sur fails to boot. Here’s a checklist to follow if macOS Big Sur won’t boot.

Check the power supply — this may sound ridiculously simple, but that’s why it’s at the top of the list. If you’re using a laptop, plug it into its charger. If it’s already plugged in, make sure the connection is secure at the wall and on your Mac. If you’re using a desktop Mac, make sure the power cable is secure.
Check the display — has your Mac failed to start up, or has it started up, but you just can’t see anything on the screen? Modern Macs don’t chime when they start up, so it can be difficult to tell. If you’re using a Mac mini or a Mac Pro or have a laptop connected to an external display with its lid closed, make sure it's not the display that’s the problem. Check the connections. Try rebooting with the display switched off and turn it on during start-up.
Try another user account — if the problem occurs after you type in your password to log in, try a different user account. If that works, the problem is likely to be login items or launch agents in your main user accounts.
Boot in Safe mode — if nothing else works, try booting in Safe mode by holding down Shift while it boots. That will boot your Mac with the bare minimum it needs to run and won’t load login items and launch agents. If that works, you know the problem is in third-party software that loads at boot time.

6. macOS Big Sur is running slow

This is perhaps the most common problem you’re likely to run into with Big Sur. It’s logical to assume that a new version of macOS should run faster than previous versions. And in some cases, that’s true. For example, Safari tends to speed up with every release. But new versions of the OS also put more pressure on system resources.

So, if you have a Mac that’s a few years old, you are likely to encounter that the macOS Big Sur is running slow. There is plenty you can do to mitigate that, though.

Things that can slow down your Big Sur experience:

Undetected apps running in the background (login items)
Extensions
Old apps

If you have a free minute to investigate, you can once again use CleanM

Bluestacks Not Working On Mac Big Sur