Photoshop CC is installed and updated by the Creative Cloud desktop app, so an installation failure is often a Creative Cloud problem rather than a Photoshop program problem. Start by recording the exact error code, restarting the computer, closing Adobe background processes, and checking the network and security software. If that does not work, repair Creative Cloud, then uninstall and reinstall it; reserve the Creative Cloud Cleaner Tool for persistent corruption or incomplete installation records.
What the installation failure means
The message “Photoshop CC installation failed” is a general result, not a diagnosis. Creative Cloud downloads the installer, authenticates your account, checks permissions, writes shared Adobe components, and then installs Photoshop. A failure in any of those stages can appear as a Photoshop error even though the damaged component is the Creative Cloud desktop app, an old installation record, a blocked connection, or a system permission.
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Click More Information on the error dialog when that option is available. Write down the complete code and any file, folder, registry value, or certificate named in the details. The code determines which branch of the troubleshooting process is most appropriate, while the installation log can identify the exact operation that failed.
Do not repeatedly click Install without changing anything. Each attempt can leave another partial record, making a later repair or cleanup more difficult.
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Before changing Creative Cloud
Restart and close Adobe processes
- Save work in every application and restart Windows or macOS.
- After signing in, quit Creative Cloud from its menu rather than immediately starting Photoshop.
- Open Task Manager on Windows or Activity Monitor on macOS and close Adobe processes that remain active. For an A12E1 failure on Windows, specifically look for
AAM Updates Notifier.exeandAAM Registration Notifier.exe. On macOS, close the corresponding AAM Updates Notifier and AAM Registration Notifier processes. - Start Creative Cloud again and retry Photoshop once.
A background process that is stuck, holding a file open, or using an old installation session can prevent the new installer from replacing shared files. Restarting clears many temporary locks without removing your applications or preferences.
Check the connection and security controls
Use a stable connection, preferably wired or a reliable private Wi-Fi network. A weak or frequently changing connection can interrupt downloads and authentication. If the computer is on a company or school network, ask the administrator for the required proxy and firewall settings instead of bypassing policy.
- Temporarily test whether antivirus or endpoint-security software is blocking Creative Cloud, following your organization’s security rules.
- Check both the local software firewall and any corporate hardware firewall.
- Confirm that a proxy is not requiring credentials Creative Cloud cannot supply.
- Retry after reconnecting to a network that does not drop during large downloads.
Re-enable any protection that you disable for testing. If installation succeeds only when a control is disabled, have the administrator create an approved exception rather than leaving the computer unprotected.
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Confirm administrator access
Repairing or removing Creative Cloud requires administrator privileges. On a personally managed computer, sign in with an administrator account or provide the administrator credentials when Windows or macOS requests them. On a managed device, permissions may be controlled by an IT policy; an administrator must perform the repair or approve it.
Repair Creative Cloud first
Repair is the least disruptive corrective action. It replaces damaged Creative Cloud components while preserving the installation context when possible.
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- Download or open Adobe’s Creative Cloud desktop app uninstaller.
- Run the uninstaller with administrator privileges.
- When the utility offers choices, select Repair rather than uninstalling immediately.
- Allow the process to finish, restart the computer if requested, and sign in to Creative Cloud.
- Open the Apps section, locate Photoshop, and select Install or Update.
If Repair completes but the same code returns, do not keep repeating Repair. Move to a clean reinstall, which removes the damaged desktop-app installation and downloads a fresh copy.
Uninstall and reinstall Creative Cloud
Uninstalling Creative Cloud is more disruptive than Repair, but it is reversible: the desktop app and Photoshop can be downloaded again. The process does not mean that your Adobe account is deleted. Back up custom Photoshop plug-ins, actions, brushes, workspaces, and presets if they are stored outside your normal synchronized locations.
- Run the Creative Cloud uninstaller as an administrator.
- Choose Uninstall only after Repair has failed.
- Accept a restart if the utility requests one.
- After restarting, download a fresh Creative Cloud desktop-app installer from Adobe and run it.
- Sign in with the account that owns the Photoshop entitlement.
- In Creative Cloud, open Apps, select Photoshop, and start the installation.
Keep the computer connected until the desktop app and Photoshop finish installing. Interrupting a download, forcing a shutdown, or deleting Creative Cloud folders manually can create the incomplete records that require deeper cleanup.
Repair versus uninstall and reinstall
| Path | When to use it | Disruption | What it changes |
|---|---|---|---|
| Repair | The first failure or a damaged Creative Cloud component is suspected | Low; keeps the existing installation context when possible | Replaces or fixes Creative Cloud files |
| Uninstall and reinstall | Repair fails or the desktop app will not start correctly | Moderate; Creative Cloud is removed and downloaded again | Removes the desktop-app installation and creates a fresh one |
Use the Creative Cloud Cleaner Tool for persistent corruption
The Creative Cloud Cleaner Tool is an advanced utility, not the normal first step. Use it when Repair and a standard reinstall fail, when an old or incomplete installation record keeps returning, or when damaged files prevent Creative Cloud from connecting to Adobe servers.
The tool can remove old or incomplete Adobe software, clean corrupted installation files, and repair host-file entries that block Adobe-server connections. Because it performs deeper cleanup than the uninstaller, read each prompt carefully and select only the Adobe components you intend to remove.
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- Back up Photoshop presets, plug-ins, actions, and any locally stored project files.
- Close Creative Cloud and all Adobe applications.
- Download the current Creative Cloud Cleaner Tool from Adobe and run it with administrator privileges.
- Review the product list and choose the Creative Cloud or Photoshop-related entries associated with the failed installation.
- Allow the cleanup to complete, then restart the computer.
- Install the current Creative Cloud desktop app, sign in, and install Photoshop from the Apps panel.
Do not use the Cleaner Tool merely because an installation is slow. It is appropriate when ordinary repair cannot remove the damaged state; on a work computer, involve IT before running it.
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| Approach | Depth of cleanup | Technical risk | Best use |
|---|---|---|---|
| Standard uninstall and reinstall | Removes the Creative Cloud desktop app and installs a fresh copy | Lower; uses the supported uninstaller workflow | Repair failed but installation records are otherwise normal |
| Cleaner Tool | Removes old or incomplete Adobe records, corrupted installer files, and selected host-file entries | Higher; advanced utility that can remove more Adobe data | Persistent corruption, repeated incomplete-installation errors, or blocked Adobe-server connections |
Find the Photoshop installation logs
When the error code is unclear, inspect the installation logs before making more changes. The logs contain detailed information about the operation that failed, including affected files or registry values.
Windows 64-bit
Open C:Program Files (x86)Common FilesAdobeInstallers.
Windows 32-bit
Open C:Program FilesCommon FilesAdobeInstallers.
macOS
Open /Library/logs/Adobe/Installers/.
Look for Install.log or compressed log.gz files. Open the file created or modified at the time of the failed attempt and search for terms such as error, failed, denied, permission, or the error code shown in Creative Cloud. A path in the log can reveal a locked file; a registry or permission message points to an administrator or security-policy issue; a network or certificate message points to connectivity, proxy, or trust-store troubleshooting.
Save a copy of the relevant log before another install attempt overwrites the most useful entries. Provide that file, the exact code, operating-system version, and the steps already tried when escalating to Adobe or IT.
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Fix error 1
Adobe associates Creative Cloud error 1 with a corrupted Creative Cloud desktop app or damaged Adobe files. Follow the escalation sequence rather than trying to install Photoshop independently:
- Restart the computer and close Adobe background processes.
- Run the Creative Cloud uninstaller and select Repair.
- If error 1 returns, uninstall Creative Cloud, restart, install a fresh desktop app, sign in, and retry Photoshop.
- If the clean reinstall still fails, run the Creative Cloud Cleaner Tool, restart, and reinstall Creative Cloud again.
If the log names a specific permission or file-access failure, resolve that condition before repeating the sequence.
Fix A12E1
A12E1 can be caused by AAM notifier processes that remain active during installation. On Windows, close AAM Updates Notifier.exe and AAM Registration Notifier.exe; on macOS, close their corresponding notifier processes. Restart and try the Creative Cloud installation again.
If A12E1 persists, reinstall the Creative Cloud desktop app and use the Cleaner Tool when the ordinary reinstall cannot remove the incomplete state. On macOS, also check the startup volume format: Adobe says Creative Cloud installation is unsupported on a case-sensitive HFS+ volume. Moving the installation to a supported, non-case-sensitive startup volume is required in that situation; changing a live volume’s format generally involves backup, erase, and restore, so obtain administrator or IT assistance first.
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Fix error 304
Error 304 can indicate outdated Creative Cloud components or a certificate-trust problem. First install or update to the current Creative Cloud desktop app, then retry Photoshop.
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If updating Creative Cloud does not resolve 304, Adobe directs users to install these DigiCert root certificates in the operating system’s trusted certificate store:
- DigiCert High Assurance EV Root CA
- DigiCert Trusted Root G4
Use the certificate-management procedure appropriate to your operating system and organization. On a managed computer, IT should verify the certificates and policy rather than downloading certificate files from an unapproved source. Creative Cloud installs in its default location; do not move its folders manually while diagnosing 304.
Fix “Adobe Creative Cloud is missing or damaged”
This message can result from crashing background processes, slow communication between Creative Cloud components, migrating a computer without the latest desktop app, or third-party software removing Adobe files.
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- Run the Creative Cloud uninstaller and choose Repair.
- If the message returns, uninstall and reinstall the current Creative Cloud desktop app.
- Use the Cleaner Tool only if repair and reinstall do not restore the missing components.
Review antivirus, cleanup, and endpoint-management software if files disappear again after a successful reinstall. A repeated removal indicates an external process that must be reconfigured or handled by IT.
When to involve IT or Adobe support
Self-service troubleshooting is appropriate when you administer the computer, control its network, and can provide administrator credentials. Escalate before making deeper changes when the device is company-managed, uses a mandatory proxy or hardware firewall, blocks certificate changes, or prevents you from running an administrator-level repair.
- Give IT the exact error code and the time of the failure.
- Include the relevant
Install.logorlog.gzfile. - Describe whether Repair, a standard reinstall, or the Cleaner Tool was used.
- Identify any antivirus, endpoint-security, proxy, or firewall product that may inspect downloads.
- For macOS A12E1 cases, state whether the startup volume is case-sensitive HFS+.
Support can then distinguish a damaged local installation from a permissions, network, certificate, or unsupported-file-system condition without asking you to repeat every step.
Quick Recap
A compact decision path
- Record the displayed code and open More Information.
- Restart, close Adobe background processes, and retry on a stable connection.
- Check antivirus, firewall, proxy, and administrator access.
- Run the Creative Cloud uninstaller and select Repair.
- If Repair fails, uninstall Creative Cloud, restart if requested, install a fresh copy, sign in, and install Photoshop.
- If corruption or incomplete records persist, run the advanced Cleaner Tool and reinstall.
- Use the correct Windows or macOS log path to identify an unresolved file, permission, network, or certificate cause.
- Follow the error-specific branch for error 1, A12E1, error 304, or “missing or damaged.”
- Escalate to IT when the computer, network, certificates, or permissions are centrally controlled.
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