Error A12E1 when installing the Creative Cloud Desktop application or updating or installing Creative Cloud applications

We've encountered the following issues:

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Sorry, there seems to be a problem with the installation process (Error code: A12E1). For troubleshooting tips, visit our customer support page.

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Note: The example below is the most common version of the error, although the text around the error code does have multiple forms.

Note for Mac OS users: You can receive this error when you attempt to install on a drive formatted with the HFS+ Case Sensitive file system. The HFS+ Case Sensitive file system is not supported for installation of Adobe Creative Cloud. The following solutions don't resolve the issue. It's necessary to install on a drive that has been formatted with a supported file system. For more information on case-sensitive drives, see here.

1. Open the Task Manager (Press Ctrl+Shift+Esc).
2. Click the Processes tab, check for the following processes
   • AAM Updates Notifier.exe
   • AAM Registration Notifier.exe
     
3. Highlight any found and click End Process.
4. Attempt the installation again.

1. Open the Activity Monitor (Applications > Utilities).
2. Check for the following processes:
   • AAM Updates Notifier
   • AAM Registration Notifier
     
3. Highlight any found, click the Force a Process to Quit button, and choose Quit.
4. Attempt the installation again.
   

This step closes down potential third-party conflicting processes which are not listed in Solution 1.

Windows

1. Click Start > Control Panel.
2. Double-click Programs and Features.
3. Select Adobe Creative Cloud and click Uninstall.
4. Follow the onscreen instructions.
5. Use the Creative Cloud desktop app to download and install the application.
6. Attempt the process again.

Mac OS

1. Go to Applications > Utilities > Adobe Installers.
2. Run the Adobe Creative Cloud Installer to uninstall.
3. Follow the onscreen instructions.
4. Use the Creative Cloud desktop app to download and install the application.
5. Attempt the process again.
   

Caution:

Make sure to quit all Adobe Creative Cloud applications and terminate all CC processes before running the Creative Cloud Cleaner Tool.

Windows

Note: These instructions include navigating to hidden folders. Review these instructions to access them: Show hidden files, folders, filename extensions

Note: The folder locations below are for 32-bit Windows. On a 64-bit OS, use 'Program Files (x86)' instead of 'Program Files'.

1. Choose Start > Control Panel.
2. Double-click Programs and Features, select Adobe Creative Cloud, and click Uninstall.
3. Follow the onscreen instructions.
4. Follow the instructions after clicking the Adobe Creative Cloud Cleaner Tool link to remove the Creative Cloud desktop app.
5. Verify that the following folders have been removed:
   • C:Program FilesAdobeAdobe Creative Cloud
   • C:Program FilesCommon FilesAdobeAAMUpdateInventory
   • C:Program FilesCommon FilesAdobeAdobeApplicationManager
     
   • C:Program FilesCommon FilesAdobeOOBE
     
   • C:ProgramDataAdobeAAMUpdater
   • C:Users[Your User Name]AppDataLocalAdobeAAMUpdater
   • C:Users[Your User Name]AppDataLocalAdobeOOBE
     
6. To download and install, click the Creative Cloud Desktop app.
   

macOS

Note: The User Library folder is hidden on Mac OS 10.7 and later. Review these instructions to access it: Access hidden user library files

1. Go to Applications > Utilities > Adobe Installers.
2. Double-click Adobe Creative Cloud.
3. Follow the onscreen instructions.
4. Follow the instructions after clicking the Adobe Creative Cloud Cleaner Tool link to remove the Creative Cloud desktop app.
5. Verify that the following folders have been removed:
   • Applications/Utilities/Adobe Creative Cloud
   • Applications/Utilities/Adobe Application Manager
   • Library/Application Support/Adobe/AAMUpdater
     
   • Library/Application Support/Adobe/AAMUpdateInventory
     
   • Library/Application Support/Adobe/OOBE
     
   • Users/[Your User Name]/Library/Application Support/Adobe/AAMUpdater
   • Users/[Your User Name]/Library/Application Support/Adobe/AAMUpdateInventory
     
   • Users/[Your User Name]/Library/Application Support/Adobe/OOBE
     
6. To download and install, click the Creative Cloud Desktop app
   

Use the Windows Certificate Manager (certmgr.msc) to check if the 'VeriSign Class 3 Public Primary Certificate Authority – G5' certificate exists in 'Trusted Root Certificate Authorities.' You can find more information about the Certificate Manager here: View or manage your certificates

If it is missing, install this certificate manually from Licensing and Use of Root Certificates - Symantec

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