Home » Alerts » A Few Common OS X El Capitan Problems and Their Solutions

The new version of Mac OS X, the El Capitan keeps almost the same overall look as OS X Yosemite, but it has included a handful of new features. This is a good change for Apple users because now they can enjoy both the new OS X and iOS 9, which functions seamlessly just as Yosemite and iOS 8 last year.


But as you know that with every new update, users face a lot of new issues. So this article is about those problems and their possible solutions.

Problem #1 If you receive a “download failed” message

To release a new operating system direct that runs on the Apple server is always a problem because it’s very large program to install run. It’s the reason that the download is slow or even temporarily stops. Often users will notice that it will run much faster one day or two day later.

If you face this issue, your Internet connection and slow speed may be responsible for that so to avoid this issue, try to use a wired Ethernet connection because in most of the cases it may fix the issues. Because a hardwired connection is a lot more reliable than a wireless connection, so try it on an Ethernet whenever possible. Newer Retina MacBook Pros and MacBook Airs don’t have Ethernet port so try to get adapters which let you to plug in an Ethernet cable into one of the Thunderbolt ports.

Problem # 2 El Capitan Gmail bug in Mail App

Some Mac users have reported that Mail app behaves differently after updating OS X El Capitan specifically with Exchange and Gmail accounts. If both Gmail and exchange accounts are not working correctly since the launch of Mac Mavericks in the native mail app client, follow the following instructions to fix the El Capitan Gmail bug in mail app:

  1. Open default Mail app on your El Capitan, and then go to “Preferences” option from the “Mail” menu.
  2. Go to the “Accounts”, and choose the email account which is causing issues, then click on the “Advanced” tab.
  3. Search the box named “Automatically detect and maintain account settings”.
  4. Now check or uncheck it and then re-launch Mail app.


Problem # 3 Mac Won’t Start

It’s very frustrating to struggle in turning on your Mac and it won’t start up even if putting your hard efforts. You see a blue or gray screen, a kernel panic, a flashing Problem # mark, an icon of a broken folder, or a computer that just sits there, instead of seeing the Finder. To fix this problem, verify that:


  1. Confirm the power cord to make sure that you have a good connection from your Mac to the wall outlet.
  2. If the wall outlet is working well and you still have no power, replace the power cord or adapter. Now it may work fine.
  3. Disconnect all accessories and peripherals which all are plugged in to the computer.
  4. If you have recently installed any of the solid drive or hard drive, verify that they are installed properly and are compatible with your system. If possible, try to reinstall the original memory or drive into the machine to verify if the behavior persists afterwards.
  5. After trying all these steps, if your Mac still won’t start, you may need to visit an Apple Store.

Problem # 4 you receive Error Message “Downloaded .app is damaged and can’t be opened”


By default, Mac OS X security does not allow all .app extensions to be installed. Sometime it may be a security issue that you see an error message and it can’t be corrected “Downloaded .app is damaged and can’t be opened”.

  1. Click on the Apple icon, and chose System Preferences.
  2. In General tab under “Allow apps downloaded from”, check Security & Privacy settings.
  3. Check the box beside the option of “Mac App store and identified developers” or “Anywhere”.

Problem # 5 VPN Doesn’t Work

Many users made a complaint that the VPN on their Mac is not working while using the Beta version of El Capitan. If you are struck in the same situation, try out the following way to figure it out with Mac built-in VPN client. Follow the below written steps to fix it:

  1. Launch System Preferences App from Launchpad > then Select Network on System Preferences Window.
  2. To add new network, click “+”button > Select the interface (VPN) > Select VPN type (PPTP for mine) > Name your new network > Click Create.


  1. Fill in the information about your VPN:

Keep Configuration stay at Default state (step 1 within the image) > Input the address of your VPN server (step 2 within the image) > Input the              Account number or name of your VPN (step 3 within the image) > Set Encryption to Automatic (128 bit or 40 bit)(step 4 within the image) > Click        Authentication Settings to enter User Authentication page and then input your VPN’s password (step 5 within the image)> and finally click OK to          confirm it.

  1. Click Advanced button (step 6 within the image) > Check the box next “Send all traffic over VPN connection” > Click OK.
  2. Click Apply (step 7 within the image) > Connect.



Fill in Info about Your VPN and Check All Traffic Over VPN Connection