If you’ve ever watched Netflix movies on your Mac, then you most probably have netsession_mac installed on your computer. If you have seen this process running in the background, don’t worry because it is not a virus but a process used by certain websites and apps.
MacOS 10.14 Mojave is the best Mac operating system yet – but it’s not without its problems. Read on to find common macOS 10.14 problems and how to fix them. Some Adobe suites are still using 32-bit components, which can result in a warning message about an app not being optimized for use with your Mac. For the most part, these warning messages will not prevent the app from running.
However, some Mac users have been bothered by an error involving Netsession in macOS Mojave. According to the reports, the error says “netsession_mac” is not optimized for your Mac and needs to be updated. Users who reported this error say that the “netsession_mac” not optimized for your Mac error message appears whenever they try to launch a program.
The error message usually reads:
“netsession_mac” is not optimized for your Mac.
This app needs to be updated by its developer to improve compatibility.
The error doesn’t do much, except to prevent them from opening the program that they need. But it can be annoying, especially if you badly need the app or website you are trying to access.
Before we discuss how to resolve this problem, let’s take a look at the Netsession process so we can understand how it works and what to do with it.
What Is Netsession_Mac?
Most users don’t know what Netsession_mac is, so it is often mistaken as a virus. Netsession_mac is a legitimate process associated with Akamai Technologies, which is considered the largest content delivery network (CDN) in the world. This process ensures that you are able to download and stream content from the internet smoothly.
Most video-on-demand websites, such as Netflix, Hulu, and Amazon, rely on Netsession to deliver content via a stable and reliable network. Applications that need large software downloads, such as Adobe programs, also use Netsession.
Here are some of the software companies that use Akamai Netsession to deliver content to their customers. If you use any apps from these companies, then that’s probably how Netsession was installed on your Mac:
Netsession_mac may also show up under different name formats, such as rsmac_3744. Netsession uses Peer-to-Peer or P2P technology to deliver content using its many servers. This means that you’ll be sharing your computer resources with other people in the P2P network to make downloading and uploading content more reliable.
Although netsession_mac does not store personal information, some users are nevertheless bothered by having to share bandwidth with other users in the network.
What Causes the ‘Netsession_mac’ Not Optimized for Your Mac Error?
Whenever you encounter the “not optimized for your Mac” error, it means that you’re probably running an outdated application. In this case, the netsession_mac you have installed on your Mac is a 32-bit app. Apple has previously announced that it will be dumping 32-bit applications, starting with macOS Mojave.
Whenever users try to run 32-bit apps in macOS Mojave, they will be greeted by the “not optimized for your Mac” error and won’t be able to launch the app. This means that you won’t be able to open an app that uses netsession_mac. To confirm whether your netsession_mac is a 32-bit app, follow the steps below:
If the last column says no, then your netsession_mac is a 32-bit app. You can then simply uninstall Netsession from your Mac to fix this error.
How to Uninstall Akamai Netsession From Your Mac
The first question that might pop into your mind is, ‘Is it safe to uninstall Netsession?’ The answer is Yes. Deleting this software will not cause your app not to work. Akamai Netsession only facilitates the downloading and uploading of content within the P2P network. However, you might experience a drop in performance as the download speed slows down or becomes unreliable at times.
But if Netsession is preventing you from launching your apps, then deleting it would be the practical course of action.
There are four different ways to get rid of netsession_mac on your Mac. You can choose which uninstall method you prefer from the list below. Before you uninstall Netsession, make sure to back up your important files first just to be sure.
Method 1: Use the Akamai AdminTool.
This is the most straightforward way of removing Netsession from your computer. Simply locate the Akamai installation folder on your Mac and run the uninstaller from there. The installation folder is usually located at ~/Applications/Akamai/. Just double-click on the uninstaller to launch it, then follow the instructions on how to remove Netsession from macOS.
Method 2: Uninstall via Terminal.
If using the uninstaller doesn’t work for some reason, you can delete netsession_mac using a special command. To do this:
Wait until the process has completed, then close the Terminal.
Method 3: Uninstall Without the AdminTool.
If the AdminTool is missing, corrupted, or damaged, your option is to delete the application folder itself, the Netsession .plisst file, and all other components associated with Akamai. Follow the steps below to completely delete Netsession from your Mac even without the AdminTool:
launchctl unload ~/Library/LaunchAgents/com.akamai.client.plist
rm -rf ~/Applications/Akamai
rm -rf ~/Library/LaunchAgents/com.akamai.single-user-client.plist
rm -rf ~/Library/PreferencePanes/AkamaiNetSession.prefPane
Close Terminal once you have completed these steps. Completely delete these Akamai components and other junk files using Tweakbit MacRepair. Restart your computer afterwards and check if the netsession_mac error has been fixed.
Method 4: Prevent Netsession From Loading.
If you’re uncomfortable with deleting all these files or you plan to use Netsession in the future, you can choose to stop it from loading instead of uninstalling it completely. To do this, you just need to prevent the .plist file from loading on your Mac by following the steps below:
Summary
Akamai Netsession is useful for streaming movies and downloading large software smoothly and efficiently. But if your Mac is running macOS Mojave, you’ll probably encounter the “netsession_mac” not optimized for your Mac error because 32-bit apps, such as Akamai Netsession, are no longer supported.
You can use the above methods to safely remove Akamai Netsession from your Mac. Once netsession_mac has been uninstalled, you’ll be able to launch the apps that you need.
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After years of mountain-inspired operating systems, macOS Mojave feels like a catch of fresh air for Apple. Who wouldn’t be tempted to lay hands on its gorgeous Dark Mode? But as it often happens with new products, you should be aware of glitches, bugs, and all kinds of compatibility paradoxes. There are a few already known macOS Mojave problems that we will cover in this article.
Before September 2018 macOS Mojave was only available as a Beta via Apple developer account. It's been 7 months since it went public but if you want to get early access to future OS updates, you might consider becoming an Apple Developer. This privileged club costs $99 per year to join and in exchange, you'll be the first to lay your hands on Apple’s fresh releases.
List of most common Mojave problems
Here is the list of most common Mojave issues that have been reported so far.
1. macOS Mojave install stuckIs your Mac compatible with macOS Mojave?
One of the most reported macOS Mojave problems is a Mac getting stuck in the middle of the Mojave installation. A simple explanation — your Mac is just not technically fit to run Mojave. According to Apple, macOS 10.14 can be launched only on Macs not older than from 2012. If yours was released earlier — sorry, you’ll have to miss this update.
Below is the list of Mac models compatible with Mojave:
Try reinstalling macOS Mojave from scratch
Okay, let’s assume your Mac is fully compatible with macOS Mojave. But still you get something like 'Installation of macOS could not continue' on your screen. What’s causing the installation trouble then? If your Mojave update stuck or ends abruptly, you should go back to square one and do it properly this time around. The recommended procedure requires backing your Mac up and cleaning your Mac from “old baggage” that may interfere with the macOS update.
Step 1. Clean up your Mac from system junk
As a general rule, a fresh macOS requires a fresh hard drive. There are tons of outdated caches, app leftovers, plugins, and system logs on any given Mac. Not only they take a lot of space but may also be causing various kernel-level errors. To clear them away, use a dedicated Mac cleanup app — you’ll be able to delete hidden junk that you otherwise can’t access. Among many alternatives, the simpler solution is CleanMyMac X, which has proved quite effective in cleaning my MacBook Pro (15-inch, 512 GB).
Now your Mac is ready to install macOS Mojave on top of your current OS. What’s left is to prepare the data backup in case something goes wrong.
Mac mojave update. To join these meetings, start from the meetings list on the Meetings tab. Release date: August 2, 2017Version: 16.9.0.37Support for multiple emergency numbersSkype for Business on Mac now supports multiple emergency numbers when configured by your admin.Delegates can schedule meetings on behalf of delegatorsOutlook for Mac will now allow a delegate to schedule an online meeting on behalf of a delegator.
Step 2. Back up your Mac
Step 3. Reinstall macOS Mojave
Now, delete the previously downloaded macOS Mojave installation (find it in your Downloads) and restart your computer. Next up, re-download the installation file from your Apple Developer Account or from the Mac App Store.
What else you might try?
You have downloaded the macOS Mojave and still cannot go past “Preparing the installation…” window. Let’s admit, new macOS versions are often buggy and problematic but here are a few more ideas to try.
2. Can’t install the Mojave on an external drive
Some folks have reported they have ran into trouble trying to install macOS Mojave onto an external SSD drive. The installation would abort midway and eventually drop you back into High Sierra. As some bloggers have pointed out, the issue is caused by a USB-C adaptor connected to MacBook.
The solution suggested on Mac forums would be to connect the SSD via Thunderbolt 3 port. If you haven’t got a similar dock available, but your external drive has a Thunderbolt 1 or 2 port, try connecting it direct using a Thunderbolt 3 to 2 adaptor. Hopefully, this time it should work. One more suggestion is to go the radical way and perform a clean install of macOS 10.13 High Sierra and then go a one step up to macOS Mojave. 3. iCloud is not syncing properly
The first editions of macOS 10.14 Mojave seemed to be lacking some basic iCloud features which will likely be added in the next updates. One of those missing bits is Back to My Mac functionality (remote access to files and screen sharing). But the most annoying setback is iCloud not syncing properly.
How to fix it? First, sign out from the iCloud account and sign in back again.
Then, similarly, log in back to your account. If that doesn’t resolve the syncing issue, delete the iCloud-linked folder “Cloud Docs” in the Finder. This will cause your Mac to download iCloud drive files and re-establish the connection.
In addition to that you’d want to stop a couple of iCloud-related process in Activity Monitor. This will reboot iCloud syncing from the ground up.
Repeat the same steps for “bird” process.
Since iMessages syncing has been added to macOS Mojave (cool!) this too may not work properly after the update. To fix it, you must apply the ancient “switch it off and on again” principle that works equally well for your home appliances. Simply disable and then re-enable iMessages syncing via iCloud to get it going like it should
4. Bluetooth issues on macOS Mojave
Bluetooth connection not working on macOS 10.14 Mojave is a known issue too. The symptoms look like your Mac just wouldn’t connect to Bluetooth, or in some cases, refuse to turn itself off.
To address this injustice, it’s recommended to delete the Bluetooth plist file — don’t worry it will recreate itself upon the next Bluetooth launch. But just in case, copy the file to some safe location.
5. macOS Mojave crashing at login
This macOS Mojave problem is quite typical. With every new macOS you can always expect some degree of mis-coordination between the OS and Apple default apps. The same refers to your third-party apps that launch automatically upon startup — they may not even be yet supported in the current version of macOS Mojave. As a result, you see your MacBook running slow after the Mojave update. What you can do is this:
Disable the unwanted Login Items
So how can you fix macOS Mojave crashing at login? Luckily, this issue is nicely tackled with the previously mentioned CleanMyMac X. It allows you to remove Login Items one by one so you can see which app was causing the macOS to crash. Disabling Login items with CleanMyMac at first may seem like an extra step but it’s worth it.
Using the same tool you can also trim down the so-called Launch Agents or Daemons. These are small helper applications that run in the background and extend the functionality of the main app, like Skype. Once again, your logic is to switch off one app at a time to see if fixes the problem.
Delete specific plist files in Preferences
A user on MacRumors forum suggested another possible solution. This annoying macOS Mojave problem can be fixed by removing the potentially corrupted property list (plist) files in Preferences. These files contain individual user settings for various parts of the macOS (Finder, Desktop, Applications). Resetting them may be just the solution you need. To proceed, you will need to start your Mac in the Safe Mode.
To enter Safe Mode, hold down Shift when your Mac is booting up. Let go of the Shift key when you see Apple logo appearing on the screen.
1. Click Finder > Go > Go to Folder…
2. Paste in: ~/Library/Preferences/ Note: copy this entire folder 3. Delete plist files for Finder or Desktop. Restart your computer to see if that fixed the issue. If not, the optimal solution would be to revert to macOS High Sierra and wait for the next macOS Mojave updates from Apple. To go back to your previous macOS, install it from Time Machine backup that we are sure you had meticulously prepared. 6. Mac running slow after Mojave update
So you’ve successfully installed macOS 10.14 Mojave to find out that your Mac’s performance got worse. This maybe not a Mojave-specific issue, though. Normally, people judge the efficiency of their Mac by looking at speed of their most-used apps. If your Mac hangs while you’re using Skype, for example, this may be due to Skype conflicting with the Mojave, thus a completely an app-related problem. But, anyway, it’s a good idea to do a basic health check of your system.
Fixes for a slow performance on Mojave:
1. Clean up your Desktop
Remember, every desktop icon takes up RAM space. Fewer icons — the faster your Mac gets. When your Desktop is clean, restart your computer. Newly-introduced 'Desktop Stacks' feature on macOS Mojave lets you put those icons in order.
2. Update all your apps to their latest versions
As you’re reading this, macOS developers around the world are adjusting their apps before to macOS Mojave before it goes public. Update everything to the last version available — some apps have already been fixed.
3. Check your Activity Monitor
Go to Launchpad > Activity monitor. Quit apps and processes that take up the unfair amount of memory.
4. Remove system junk and app cache
Outdated cache files, redundant support files, and logs generated by all your apps can slow even a powerful Mac down to a crawl. Remember how fast and efficient your Mac was straight from the store? You can partially restore this original power by cleaning up your Mac from top to bottom, or from Finder to Library, if you like. CleanMyMac X is a great app that can clean all sort of junk and clutter from your hard drive.
Things that deserve being removed:
You can download a free CleanMyMac version here. It cleans all the items described above.
7. Quit apps keep showing in the Dock
The latest update to macOS Mojave introduced a new feature that leaves many of us, Apple fans, disappointed. Now the default behaviour of macOS Mojave is to show you 3 most recently used applications in the Dock. So if you have just quit an app and it still shows up in the Dock, it’s not a bug but a feature. Luckily, an easy reversible one.
After all, the Dock is a customizable corner of the macOS and it should be left to the user to decide what to put in there.
Right click on Skype icon in the Dock while holding Ctrl key.A menu will swipe up with some options.Step #3. Skype for business macos.
8. Third-party apps not working on macOS Mojave
The main problem here is 32-bit/62-bit distinction. Apple stated that macOS High Sierra is the last operating system to support 32-bit optimized applications. From then on, if an app isn’t updated for 64-bit architecture, you won’t be able to use it on Mojave. This is one of the reasons not to update and stay with the good old High Sierra on your Mac.
How to find apps that are not Mojave-compatible?
Before you upgrade to macOS Mojave, check for compatibility issues. Here's how to do that:
Now, look for the last column 64- bit in the window that opens. “Yes” indicates that the app in question is ready to run on macOS Mojave. Sadly enough, even some of Apple’s native 32-bit apps will not be supported on macOS Mojave. This includes Aperture, old version of iWork, and old version of Final Cut Studio.
Other notable 32-bit apps are Microsoft Office’s Powerpoint 2011, Outlook 2011, Word 2011, Excel 2011. The adequate answer to that is to update these apps to newer versions. Or you could also:
How to check 32-bit apps on macOS Mojave
However, if you've already upgraded to the new OS and need to check the incompatible software, you have to follow a bit different steps than mentioned above. In Mojave, 32-bit apps can be reviewed in System Information:
That's how you can get an overview of 32-bit apps on your Mac if Mojave is installed on your Mac. Developers are highly encouraged to migrate to 64-bit framework but it will take some time. So, if you need to remove the incompatible apps from your system, check a few tips below.
An app is 'not optimized for your Mac and needs to be updated'
When you see this rather discouraging message you may simply want to uninstall the app — a radical solution to the problem. To make things easier, the Uninstaller tool in CleanMyMac has a special tab that will show you all 32-bit apps you have on your Mac. From there you are one click away from deleting them all at once:
My app is 64-bit but still not working on Mojave
This happens too. In this case, you can download the app again and try to re-install it from scratch. There is a more elegant solution, though. CleanMyMac tool, mentioned in this article has a tool to reset the apps to their original state, notably, without losing your user settings.
Some Programs On Mojave Says Not Optimized For Your Mac Pro
Using this method I was able to successfully fix my Evernote app failing to sync after the last update.
Since we're talking app versions, one more use of this versatile program is to update your applications to the latest versions. Instead of googling for the latest version of app X, Y, Z, you can update everything in one shot — just what Updater tool in CleanMyMac X does.
9. Time machine is not working on Mojave
Many people report that after upgrading to macOS Mojave, Time Machine isn’t able to complete a backup. Unfortunately, this problem isn’t fixed yet, so keep an eye on software updates in the Mac App Store.
Before that, if you don’t want to risk losing your important files, consider some alternative backup options. You can transfer files to an external drive, iCloud, etc. For more information, check out this article about different ways to back up your Mac.
10. macOS Mojave battery problems
Since installing macOS Mojave the battery life of your MacBook has become shorter? Then it’s time to check what’s causing the battery drain on your Mac. Here’s how to do that:
From there you can see how much energy your programs are taking up. If it’s a lot, you may consider uninstalling some apps.
If you want to monitor your battery health and get alerts when something goes wrong, I recommend using CleanMyMac’s Menu. One click and you know the most resource-consuming apps, health indicators of your battery, hard drive, and memory.
You can also check an article about increasing Mac battery life, it’s full of useful tips.
11. Wi-Fi not working after installing Mojave
If you’re having troubles with connecting to the internet, try starting your Mac in Safe Mode and check the connection. If you’re not sure how to do that, here’s a detailed guide how to use Safe Mode.
If Wi-Fi works in Safe Mode on Mojave, then it means there’s an issue with an app or extension you installed. Make sure that all your apps are updated to the latest versions to avoid the compatibility issues. To do that quickly, use the Updater tool in CleanMyMac X utility. With its help, you can easily get the latest and the most reliable versions of all your applications.
Here’s how to use CleanMyMac’s Updater:
That’s it! Now you are up-to-date.
12. File thumbnails don’t show on the desktopSome Programs On Mojave Says Not Optimized For Your Mac Download
Some people reported that after installing Mojave, thumbnail previews of some files, such as photos and PDFs, don’t show up.
One thing you can try is removing the cache files by starting your Mac in Safe Mode, then shutting it down and restarting normally. But I recommend using CleanMyMac in this case. It helped me to get all my files previews back. After launching the app, go to System Junk to remove the caches, and then use Maintenance utility to Run Maintenance Scripts.
Some Programs On Mojave Says Not Optimized For Your Mac Computer13. Zero-day bug
A zero-day vulnerability has been revealed by a security researcher Patrick Wardle just after Mojave launch. This bug can allow an attacker to use a malicious app in order to steal your personal data, such as contact details from your Mac.
Patrick highlighted it on Twitter with a video that shows how he tries to access the address book on Mojave, and failing, before running a script simulating a malicious app which finally allows to access the address book and copying the data.
As macOS security is a hot topic, probably a day-zero bug will be fixed soon, as well other Mojave bugs and issues. Meanwhile, stay tuned — I’ll update the article once Apple releases an update that addresses this problem.
Some Programs On Mojave Says Not Optimized For Your Mac Download
With several drawbacks mentioned in this article, macOS 10.14 Mojave still looks like a great step ahead. It’s cool and more powerful than anyone thought possible. We’ll be updating this article as soon as new macOS Mojave issues get reported. Meanwhile, welcome to the Dark Side Mode!
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