Sep 28, 2018 That is solved. Hopefully you don’t have this issue. If you do, leave a comment, for it seemed like a rare, odd issue even for Apple! A critical software update is required for your Mac, a solution! To completely remove Flash Player is needed pop-ups, users will have to eliminate the associated adware from their computers. The easiest way to do that is by employing security software, although manual elimination is also an option. The instructions provided cover the PUP elimination procedure. A Flash Player Update is Required to View this.
This article is intended for enterprise and education network administrators.
Apple products require access to the Internet hosts in this article for a variety of services. Here's how your devices connect to hosts and work with proxies:
- I had the same exact 'critical update' problem. I think I'm unable to update because I migrated my settings over from an old iMac, and the network interface isn't set up properly. So entering my wifi key doesn't make any difference because the network settings are incorrect. There's no way to get into network settings from this screen.
- On your computer, open Chrome. At the top right, look at More.; If an update is pending, the icon will be coloured: Green: An update was released less than 2 days ago.; Orange: An update was released about 4 days ago.; Red: An update was released at least a week ago.
- The most recent software update for some Kindle e-readers provides updates needed to continue using some services. This update should automatically download and install when your Kindle is charging and connected to a Wi-Fi network. If it doesn't, you may need to manually install the update to regain access to some services.
- Network connections to the hosts below are initiated by the device, not by hosts operated by Apple.
- Apple services will fail any connection that uses HTTPS Interception (SSL Inspection). If the HTTPS traffic traverses a web proxy, disable HTTPS Interception for the hosts listed in this article.
Make sure your Apple devices can access the hosts listed below.
Apple Push Notifications
W2 and 1099 software for mac. Learn how to troubleshoot connecting to the Apple Push Notification service (APNs). For devices that send all traffic through an HTTP proxy, you can configure the proxy either manually on the device or with a configuration profile. Beginning with macOS 10.15.5, devices can connect to APNs when configured to use the HTTP proxy with a proxy auto-config (PAC) file.
Device setup
Access to the following hosts might be required when setting up your device, or when installing, updating or restoring the operating system.
Hosts | Ports | Protocol | OS | Description | Supports proxies |
---|---|---|---|---|---|
albert.apple.com | 443 | TCP | iOS, tvOS, and macOS | Yes | |
captive.apple.com | 443, 80 | TCP | iOS, tvOS, and macOS | Internet connectivity validation for networks that use captive portals. | Yes |
gs.apple.com | 443 | TCP | iOS, tvOS, and macOS | Yes | |
humb.apple.com | 443 | TCP | iOS, tvOS, and macOS | Yes | |
static.ips.apple.com | 443, 80 | TCP | iOS, tvOS, and macOS | Yes | |
tbsc.apple.com | 443 | TCP | macOS only | Yes | |
time-ios.apple.com | 123 | UDP | iOS and tvOS only | Used by devices to set their date and time | -- |
time.apple.com | 123 | UDP | iOS, tvOS, and macOS | Used by devices to set their date and time | -- |
time-macos.apple.com | 123 | UDP | macOS only | Used by devices to set their date and time | -- |
Device Management
Network access to the following hosts might be required for devices enrolled in Mobile Device Management (MDM):
Hosts | Ports | Protocol | OS | Description | Supports proxies |
---|---|---|---|---|---|
*.push.apple.com | 443, 80, 5223, 2197 | TCP | iOS, tvOS, and macOS | Push notifications | Learn more about APNs and proxies. |
gdmf.apple.com | 443 | TCP | iOS, tvOS, and macOS | MDM server to identify which software updates are available to devices that use managed software updates. | Yes |
deviceenrollment.apple.com | 443 | TCP | iOS, tvOS, and macOS | DEP provisional enrollment. | -- |
deviceservices-external.apple.com | 443 | TCP | iOS, tvOS, and macOS | -- | |
identity.apple.com | 443 | TCP | iOS, tvOS, and macOS | APNs certificate request portal. | Yes |
iprofiles.apple.com | 443 | TCP | iOS, tvOS, and macOS | Hosts enrollment profiles used when devices enroll in Apple School Manager or Apple Business Manager through Device Enrollment | Yes |
mdmenrollment.apple.com | 443 | TCP | iOS, tvOS, and macOS | MDM servers to upload enrollment profiles used by clients enrolling through Device Enrollment in Apple School Manager or Apple Business Manager, and to look up devices and accounts. | Yes |
setup.icloud.com | 443 | TCP | iOS only | Required to log in with a Managed Apple ID on Shared iPad. | -- |
vpp.itunes.apple.com | 443 | TCP | iOS, tvOS, and macOS | MDM servers to perform operations related to Apps and Books, like assigning or revoking licenses on a device. | Yes |
Software updates
Make sure you can access the following ports for updating macOS, apps from the Mac App Store, and for using content caching.
macOS, iOS, and tvOS
Network access to the following hostnames are required for installing, restoring, and updating macOS, iOS, and tvOS:
Hosts | Ports | Protocol | OS | Description | Supports proxies |
---|---|---|---|---|---|
appldnld.apple.com | 80 | TCP | iOS only | iOS updates | -- |
gg.apple.com | 443, 80 | TCP | iOS, tvOS, and macOS | iOS, tvOS, and macOS updates | Yes |
gnf-mdn.apple.com | 443 | TCP | macOS only | macOS updates | Yes |
gnf-mr.apple.com | 443 | TCP | macOS only | macOS updates | Yes |
gs.apple.com | 443, 80 | TCP | macOS only | macOS updates | Yes |
ig.apple.com | 443 | TCP | macOS only | macOS updates | Yes |
mesu.apple.com | 443, 80 | TCP | iOS, tvOS, and macOS | Hosts software update catalogs | -- |
ns.itunes.apple.com | 443 | TCP | iOS only | Yes | |
oscdn.apple.com | 443, 80 | TCP | macOS only | macOS Recovery | -- |
osrecovery.apple.com | 443, 80 | TCP | macOS only | macOS Recovery | -- |
skl.apple.com | 443 | TCP | macOS only | macOS updates | -- |
swcdn.apple.com | 80 | TCP | macOS only | macOS updates | -- |
swdist.apple.com | 443 | TCP | macOS only | macOS updates | -- |
swdownload.apple.com | 443, 80 | TCP | macOS only | macOS updates | Yes |
swpost.apple.com | 80 | TCP | macOS only | macOS updates | Yes |
swscan.apple.com | 443 | TCP | macOS only | macOS updates | -- |
updates-http.cdn-apple.com | 80 | TCP | iOS, tvOS, and macOS | -- | |
updates.cdn-apple.com | 443 | TCP | iOS, tvOS, and macOS | -- | |
xp.apple.com | 443 | TCP | iOS, tvOS, and macOS | Yes |
App Store
Access to the following hosts might be required for updating apps: Best ripping software.
Hosts | Ports | Protocol | OS | Description | Supports proxies |
---|---|---|---|---|---|
*.itunes.apple.com | 443, 80 | TCP | iOS, tvOS, and macOS | Store content such as apps, books, and music | Yes |
*.apps.apple.com | 443 | TCP | iOS, tvOS, and macOS | Store content such as apps, books, and music | Yes |
*.mzstatic.com | 443 | TCP | iOS, tvOS, and macOS | Store content such as apps, books, and music | -- |
itunes.apple.com | 443, 80 | TCP | iOS, tvOS, and macOS | Yes | |
ppq.apple.com | 443 | TCP | iOS, tvOS, and macOS | Enterprise App validation | -- |
Content caching
Access to the following host is required for a Mac that uses macOS content caching:
Hosts | Ports | Protocol | OS | Description | Supports proxies |
---|---|---|---|---|---|
lcdn-registration.apple.com | 443 | TCP | macOS only | Content caching server registration | Yes |
App notarization
Starting with macOS 10.14.5, software is checked for notarization before it will run. In order for this check to succeed, a Mac must be able to access the same hosts listed in the Ensure Your Build Server Has Network Access section of Customizing the Notarization Workflow:
Hosts | Ports | Protocol | OS | Description | Supports proxies |
---|---|---|---|---|---|
17.248.128.0/18 | 443 | TCP | macOS only | Ticket delivery | -- |
17.250.64.0/18 | 443 | TCP | macOS only | Ticket delivery | -- |
17.248.192.0/19 | 443 | TCP | macOS only | Ticket delivery | -- |
Certificate validation
Apple devices must be able to connect to the following hosts to validate digital certificates used by the hosts listed above:
Hosts | Ports | Protocol | OS | Description | Supports proxies |
---|---|---|---|---|---|
crl.apple.com | 80 | TCP | iOS, tvOS, and macOS | Certificate validation | -- |
crl.entrust.net | 80 | TCP | iOS, tvOS, and macOS | Certificate validation | -- |
crl3.digicert.com | 80 | TCP | iOS, tvOS, and macOS | Certificate validation | -- |
crl4.digicert.com | 80 | TCP | iOS, tvOS, and macOS | Certificate validation | -- |
ocsp.apple.com | 80 | TCP | iOS, tvOS, and macOS | Certificate validation | -- |
ocsp.digicert.com | 80 | TCP | iOS, tvOS, and macOS | Certificate validation | -- |
ocsp.entrust.net | 80 | TCP | iOS, tvOS, and macOS | Certificate validation | -- |
ocsp.verisign.net | 80 | TCP | iOS, tvOS, and macOS | Certificate validation | -- |
Firewalls
If your firewall supports using hostnames, you may be able to use most Apple services above by allowing outbound connections to *.apple.com. If your firewall can only be configured with IP addresses, allow outbound connections to 17.0.0.0/8. The entire 17.0.0.0/8 address block is assigned to Apple.
HTTP proxy
You can use Apple services through a proxy if you disable packet inspection and authentication for traffic to and from the listed hosts. Exceptions to this are noted above. Attempts to perform content inspection on encrypted communications between Apple devices and services will result in a dropped connection to preserve platform security and user privacy.
- See a list of TCP and UDP ports used by Apple software products.
- Find out which ports are used by Profile Manager in macOS Server.
- Learn about macOS, iOS, and iTunes server host connections and iTunes background processes.
- Customize the Notarization Workflow.
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Manually run Software Update on Mac OS X Leopard
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- Leopard | Software Update
If you want to manually check for Mac OS X and/or application updates for a Mac running Mac OS X Leopard, you can launch Software Update. For the most part, Software Update on Mac OS X Leopard works in much the same way as it does on Mac OS X Tiger.
What's new in Mac OS X Leopard?Instead of installing an update one by one and then showing you the status in Software Update (a behavior in Mac OS X Tiger), Software Update in Leopard will download all the updates you have selected and then installs them. See the following link that describes how Software Update works in Tiger. Pay close attention to the image in step five.
Another change in Leopard is that you can allow Software Update to automatically check for new updates in the background. It will then notify when a new update is available. You can choose to install the updates immediately, defer it to a later time, or tell Software Update to ignore the update.
Manually running Software Update
- Choose Software Update from the Apple Menu. You'll see a a check for new software will initiate.
If during the check updates are identified, a list will be created that shows the available updates. Software Update displays information about a particular update. Just click on an item to view its description in the lower pane. Some update will show a left pointing arrow, an indication that in order for the update to be installed your Mac, a restart will be required - Select the items you want to install (uncheck the items you don't want to install)
- Click Install on the lower right corner. Notice that in this example there are eleven updates hence the button states 'Install 11 Items'. The button automatically updates based on the number of updates that will be installed. This will change based on the checking / unchecking of boxes or the number of updates identified the next time you run Software Update.
- A box will pop up asking you to enter you Mac Admin user name and password
(I've have removed the name in the image below) - You'll see a progress of the update in that it will first download updates as follows:
- The next round of screens will depend on whether or not a restart is required or not.
(a) If a restart is required you will be shown the following box. If you click 'Restart', the install will proceed.
After this screen, Software Update will transition to a procedure that takes over control of your Mac, installs the updates, then restarts.
(b) If a restart is not required, the install will proceed as follows (note that the following screens are from another run of Software Update, not the one shown above):
If you click 'OK', Software Update will subsequently check if any other updates are available. It does this because you might not have selected to install a particular update or because some updates show up after prior ones have been installed. Notice that it places a green checkbox to the ones that have already been installed. - Once all updates have been installed, Software Update will show the following:
This will be shown immediately after all updates that do not require a reboot have been installed or after Software Update is re-run following the installation of updates that required your Mac to be rebooted.
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