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'I was trying to update my iPhone 7 to latest iOS 14 version but the download and install option in 'software update' was greyed out. How can I fix this?'

All Enterprise Keyword options are greyed out. I just did a migration from SPO to SP13 on-prem. When I go in, I can see the keywords have been moved over, but the area to add them is greyed out. I went into the options for one of the libraries, and checked the Enterprise Keyword settings, and it is enabled, but also greyed out.

• Allow your device to inquire Apple’s servers for the new version. The upcoming iOS release is briefly presented on the Software Update screen. At the end of the description you can find the Download and Install button. How To Solve Greyed Out Download and Install Button Normally, a tap on it kick-starts the upgrade process.
• Now and then these standard user accounts are deleted and new ones are added as students come and go. Now, I have tried to install Python 3.6.2 for ALL users from within the administrator account, hoping that the students then can start all the installed components from within their standard user accounts.

Upgrading iPhone to the latest iOS 14brings many newest features and security improvements. However, some users have experienced issue with the Download and Install button grayed out and they're unable to do the iOS 14 update.Before getting yourself into a complete flap, the easy and useful tips below will get you out of the crap.

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1. Check Internet Connectivity

The Download and Install button may be grayed out if your iPhone is connected with cellular data or a poor WiFi. Thus, you'd better check your iPhone's internet connectivity and ensure the device is connected with a strong Wi-Fi network before upgrading to iOS 14. Here's what you need to do:

1.1 Use Wi-Fi Instead of Cellular Data

If your iPhone is on cellular connection when upgrading to iOS 14, you should see a notification 'This update requires a Wi-Fi network connection to download'. To switch to a Wi-Fi connection, just go to Settings > Wi-Fi and toggle the Wi-Fi on.

Once you are connected to a Wi-Fi network, go to Software Update and now the Download and Install option should work as normal.

1.2 Turn Off WiFi and Turn It Back On

If you're connected to WiFi but the Download and Install button is still greyed out, poor Wi-Fi connectivity is to blame. You can open the Safari app and open some websites to test the internet. If the internet is not running properly, you can try to turn off WiFi and then turn it back on.

1.3 Disable Wi-Fi Assist

If Wi-Fi Assist is turned on, your iPhone will automatically switch to cellular data when the Wi-Fi network is poor. In this situation, you shouldgo to Settings > Cellular Data > Wi-Fi Assist and turn it off.

1.4 Reset Network Settings

Another workaround is to reset network settings when the Download and Install button is still greyed out. After that, all relevant network settings on your iPhone will be reset to factory defaults.

To do that, open the Settings app and head to 'General'. Thentap on 'Reset > Reset Network Settings'. Enter your device's passcode when prompted and confirm the action.

1.5 Switch to Another iPhone

If there is still the problem of 'iOS 14 Download and Install button grayed out' after resetting network settings, you can try to perform the iOS 14 update on a different iPhone to check if the issue occurs due to the network issue.

2. Check iPhone Storage Space

Large storage will be occupied to install a new iOS update. If there is not enough storage available on your iPhone, the Download and Install button may be grayed out during the iOS 14 update. So another constructive suggestion we offer to you is to check your iPhone storage space. Here're how to do that:

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Go to Settings > General > iPhone Storage and you will see the remaining storage on the device. It is recommended to reserve at least 1GB before upgrading.

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3. Check Battery Percetage on iPhone

In general, when updating to the latest version of the iOS, the power is one of the key factors that cannot be ignored. If you do not follow the instructions, it may cause great potential damage to your iOS device. The iPhone power is so important that Apple itself will not allow users to do the iOS 14 update when the device has less than 50% of battery charge remaining.

So before updating, make sure that the device has enough power, or it's better to plug the device directly into the power supply using original Apple lightning cable.

4. Download and Install iOS 14 with iTunes

The steps described above show you basic tricks to get rid of the 'Download and Install' button grayed out issue. Some users may still find this issue when they intend to install iOS 14. If so, use iTunes instead.

In some cases, iTunes is a great alternative to update iOS. For example,there is not enough storage space on the iPhone, there is no Wi-Fi around to do the iOS update, etc. Not much to say, let's show you how to use iTunes to download and install iOS 14 on your iPhone.

Preparation before iOS 14 update:

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• A Windows or Mac OSX computer and USB cable.
• The latest version of iTunes.

Download and Install iOS 14 with iTunes:

1. Lauch iTunes on your computer and ensure it is upgraded to the latest version.

2. Connect your iPhone to the computer via USB cable. Unlock the device and tap on 'Trust' on its screen when prompted.

3. In the upper left corner, the device icon will appear. Click on it and go to the Summary page.

4. On the summary interface, click on 'Check for Update' and you will have your iPhone updated to the latest iOS 14.

5. Update to iOS 14 with Reliable 3rd-Party Tool

Now you shall know how to download and install iOS 14with iTunes. But you may encounter different kinds of issues when using iTunes for the update. To avoid the problems, you can use FoneGeek iOS System Recovery to execute the whole update process without any interruption. No data will get lost after the iOS 14 upgrade. Besides iOS update, it can also fix various iOS issues arise during or after the update. This program stands out in this industry for its perfect performance.

Step 1. Get this program downloaded to your computer, then install and launch it. From the main interface, select 'Standard Mode' to proceed.

Step 2. Connect your iPhone to the computer using lightning cable and click on 'Next'. The latest firmware package will be listed for you to download.

Step 3.Click on 'Download' and follow the on-screen steps. When the whole process is finished, the iOS 14 firmware will be downloaded and installed on your iPhone.

Write In the End

Hope you have resolved the Download and Install button grayed out issue and have the newest iOS 14 installed on your iPhone. Before upgrading to iOS 14, it is recommend to back up your iPhone to avoid unexpected data loss. Instead of using iTunes or iCloud, you can try another reliable tool developed by FoneGeek - Free iOS Backup & Restore. Using it, you can flexibly backup WhatsApp, contacts, photos, messages, etc. on your iPhone and selectively restore data without overwriting the existing files on the device.

By Fay J. Melton

Posted on Aug 08, 2019, 22:27:41

Fay J. Melton has explored the area of technology and software for more than 5 years and he is enthusiastic about helping users solve various technology issues.

When you download an app or a piece of software on your Mac, the file is usually downloaded as a DMG file. DMG files serve as containers for apps in macOS. You just need to double-click the downloaded DMG file, drag the app to the Applications folder, then unmount the installer. This way, the installation process has been simplified and users don’t have to suffer the hassle of installation wizards that are plaguing Windows users.

Although the installation process sounds simple, it is much more complicated than that. The contents of the DMG goes through a checksum process to verify that the file is 100% intact and that it hasn’t been tampered with. Once the file has been verified, it is then decompressed. DMG files are designed for macOS and you can’t run them on Windows devices.

DMG files make app installations on macOS a lot quicker and easier. However, there have been several reports from users about the .dmg file not opening on Mac. There are different versions to this error, but the end scenario is the same: for some reason, users are unable to open the .dmg file on Mac. This guide will discuss why some users have trouble opening a DMG file and how to resolve this issue.

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Unable to Open .DMG File on Mac

Installing a DMG file on Mac should be as easy as double-clicking the file and dragging the app to the Applications folder. However, the process is not as smooth for some Mac users because they are not able to open the DMG file to start with. According to user reports, the download process was completed and there were no issues with unzipping. But when it comes to opening the unzipped files, nothing happens. Some users who encounter this issue get the resource temporarily unavailable error while others noted no activity happening no matter how many times the file is clicked.

Others encounter this error message when opening the DMG file:

There is no default application specified to open the document.

When the user tries to open it, either the options are grayed out or nothing happens when any of the options are clicked. This error has caused the affected Mac users to be frustrated. The users who encountered this error tried to redownload the file using a different Mac and the DMG file seems to be working fine, which means that the problem lies with the device itself. But what causes DMG files to not open on Mac?

Why Your .DMG File Is Not Opening on Mac

Some users noted that they cannot open the .dmg file on Mac after updating to Catalina, but there are also those who encountered this error when running an older version of macOS. This means that the problem is not unique to Catalina but it is something that affects the entire macOS system.

Here are some of the possible reasons why some users are having trouble opening DMG files:

• If your Mac is running Catalina, check the version of the app you are trying to open. Catalina no longer supports 32-bit apps. So if you’re trying to download and install a 32-bit app, then you might not be able to install it on Catalina.
• If you have poor or unstable internet connection, it is possible that the file was not downloaded completely, resulting in errors when accessing the file.
• If you downloaded the file from an untrustworthy source, it might be a fake DMG file or it could be loaded with malware.
• It is also likely that the DMG file you downloaded is corrupted. An interrupted download process and malware infection are the two leading causes of file corruption.

Hence, before you start the troubleshooting process, here are some things you need to consider:

• Download the file once again using a different internet connection. Try using a wired connection if possible.
• Scan the file for malware infection, especially if the file was downloaded from an untrustworthy source.
• Download the file from another source. If the app is not available on the Mac App Store, visit the developer’s website and download the installer from there instead.
• If you’re running macOS Catalina, make sure that you are downloading the 64-bit version of the app.

How to Open .DMG File on Mac

If you’re having trouble opening the DMG file on Mac, here are some of the things you can do:

Method #1. Use DiskImageMounter.

1. After downloading the DMG file, right-click or Command + click on the file.
2. Choose Open With from the menu, then select DiskImageMounter.
3. Depending on the size of your file, you should see the mounted Disk Image appear on your Desktop.
4. If you don’t see the Disk Image, choose Other from the right-click menu.
5. Navigate to /System/Library/CoreServices/DiskImageMounter.app
6. The DMG file should now be mounted.

Method #2. Mount the .DMG File via Terminal

If the right-click menu is grayed out or nothing happens when you click any of the Open With options, you can try mounting the file using Terminal instead. Drag the file to the Desktop and follow the steps below:

1. Open the Terminal app by going to Finder > Applications > Utilities.
2. In the Terminal window, type in the following command and press Enter: cd ~/Desktop
3. Next, type in this command, then press Enter: hdiutil attach filename.dmg
4. Replace filename.dmg with the actual .dmg file name.
5. After executing the two command lines, your .dmg file will now be mounted on your Mac.

Method #3: Use a Third-Party Tool.

If you cannot open the DMG file using the two methods above, you can try using a third-party utility instead. Here are some of the apps you can try:

Summary

Installing applications on macOS is a lot simpler compared to installing programs on Windows, thanks to the DMG file. However, it is normal to run into errors when opening a DMG file, especially if the file has been corrupted or has not been completely downloaded on your device. If this is the case, you can try any of the three methods listed above to open the problematic DMG file.