​​What to do if Dropbox won’t install

Occasionally, the Dropbox desktop application may fail to install on your Linux, Mac, or Windows computer. Most likely, the installation failed because:

  • The installer did not download correctly
  • You’re not connected to the Internet, or your connection was disrupted
  • Your antivirus software or firewall blocked the installation
  • Your computer doesn’t meet the minimum system requirements

For each case, the simplest solution is to retry the download and installation. These instructions work on all computers (Linux, Mac, and Windows):

  1. Re-download the Dropbox installer.
  2. Re-try the installation.

If you retry installation but still encounter an error, try using the Dropbox offline installer.

  1. Download the offline installer.
  2. Re-try the installation.
  3. If the error persists, temporarily disable any antivirus software and then repeat the offline installer steps.

If this fixes the issue, you'll need to contact your antivirus provider for more assistance. If this doesn’t fix the issue, check the following:

If you’re encountering network issues, the most likely cause is one of the following:

If none of the above fixes address the problem you’re seeing, check each of the following advanced troubleshooting items:

I can’t install a previous version of the Dropbox desktop app

If you're trying to install a previous version of the Dropbox desktop app, you'll likely encounter one of these error messages:

  • You already have a more recent version of Dropbox installed on your machine.
  • This installer is no longer supported. Please download a new version from /downloading.

If you're encountering an error message, or if you're having trouble installing a previous version of the Dropbox desktop app, visit our downloads page and install the latest version.

We don't recommend using previous versions, as the latest version includes the most up-to-date fixes, features, and security updates.

I can’t use Dropbox on a corporate network

The Dropbox app may not install or sync on corporate networks. If you’re not sure if Dropbox is supported on your corporate network, contact your company's network administrator to find out.

Some corporate networks are behind HTTP proxy servers that use NTLM authentication. Dropbox currently doesn't support this kind of proxy authentication. However, some users have reported some success using an intermediate proxy, such as NTLMAPS or cntlm, to get Dropbox running on their network.

My desktop app build isn’t working as expected

Sometimes the desktop app may not work as expected. To fix any unexpected behavior you see on the app, the best first step is to update to the latest stable version of the app. 

How you update the app depends on the version you're currently running. Generally, you're running a version called a “stable build” or a “beta build.” The stable build is the current version of the app; beta builds are still in a testing phase and include the latest updates to the app.

Follow the steps below to check which kind of build you're using:

  1. Hover your cursor over the Dropbox icon in the system tray or menu bar. The app version appears in the format “Dropbox XX.XX.X.”
  2. Compare the version number you see to the most recent entry on the "Desktop client builds" Forum thread. The title of the post will tell you if you're running a stable or beta build.

Your version number matches an older stable build

If you're running an older stable build, updating to the latest stable build should fix the behavior you're seeing. To install the latest stable build:

  1. Locate the latest "Stable Build" post on the Dropbox Community.
  2. Click Offline Installer next to your operating system to download the latest stable build.
  3. Once downloaded, run the installer.

Once installed, the desktop app may take some time to reindex your files and sync any changes.

Your version number matches a beta build

In general, versions formatted as “xx.4.xx” are stable builds, while those formatted as “xx.3.xx” are beta builds. If you're running a beta build, turning off auto-updates for beta builds and updating to the latest stable build should fix the behavior you're seeing. To install the latest stable build:

  1. Sign in to dropbox.com.
  2. Click your avatar.
  3. Click Settings.
  4. Choose Profile.
  5. Under Preferences, uncheck the box next to Include me in early releases.
  6. Locate the latest "Stable Build" post on the Dropbox Community.
  7. Click Offline Installer next to your OS to download the latest stable build.
  8. Once downloaded, run the installer.

Once installed, the desktop app may take some time to reindex your files and sync any changes. If the issue you’re experiencing was fixed by updating a beta build, you may want to continue to use the stable build.

Your version number matches the current stable build

If you're running the current stable build, the behavior may come from an interaction with another app or with your operating system. Please read the other sections in this article to learn more.

I’ve tried everything in this article, but I’m still having trouble—what should I do?

If you've tried all of the above troubleshooting measures but you're still encountering an install failure, or if you're seeing an error message with a specific code number, contact Dropbox support.

Note: You can get the full text of the error by clicking the blue link within the error message pop-up. This will open a file with the full text of the error; the last line is the specific error code.

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