Error 146: Move File Failure – SSD vs HDD Path Issues

Adobe Error 146 occurs during the final staging phase of an application installation or update when the Creative Cloud installer cannot move extracted payload files from the temporary staging directory to the target drive location. This failure frequently appears on multi-drive systems where the operating system temporary directory is located on a primary solid-state drive (SSD) while the custom installation path points to a secondary hard disk drive (HDD), external volume, or separate internal partition.

Fast Fix

Open the Creative Cloud desktop app, navigate to Preferences > Apps, and set the Install location back to the default system drive (Default or C:\Program Files\Adobe). If the install succeeds, you can safely configure external media caches and scratch disks post-installation rather than forcing core program binaries onto a secondary storage volume.

Quick Status Snapshot

• Severity: Medium (prevents application deployment or updates; existing projects and assets remain untouched)
• Platforms: Windows 10, Windows 11, macOS
• Scope: Cross-volume file system operations, staging-to-target path routing, and disk format permissions
• Action Required: Revert install directory paths, verify cross-drive permissions, or clear temporary staging caches

Diagnostic Path

Follow this diagnostic checklist to determine why the file move operation failed:

1. Verify Drive Configuration:
   • Are you installing to a secondary internal HDD, an external SSD, or a mapped network drive? Creative Cloud core applications require local, non-removable NTFS (Windows) or APFS (macOS) volumes.
2. Check the Installation Log for the Source/Destination Path:
   • Open Install.log and search for Error 146 or fatal error 146. The log will show both the source path (usually in %temp% on the primary SSD) and the target destination path on the secondary drive.
3. Test Cross-Drive Manual File Operations:
   • Manually copy and paste a large file from your primary system drive to the target folder on the secondary HDD. If Windows returns an I/O error, write-protection warning, or long freeze, the underlying issue is disk latency, file system corruption, or a drive format conflict.

What Error 146 Means

When installing or updating an app, Creative Cloud performs a three-stage deployment:

1. It downloads compressed packages from Adobe servers.
2. It decompresses the payloads into the system’s temporary directory (typically located on your fast boot SSD: C:\Users\<User>\AppData\Local\Temp).
3. It moves the unpacked binaries and assets to the final application folder.

On a single drive, moving a file is an instantaneous metadata pointer update. Across different physical drives (such as moving from a primary SSD to a secondary HDD), the operating system must perform a complete read-write-delete operation across volume boundaries. If the secondary drive is slow to respond, formatted in an incompatible file system (such as exFAT or FAT32), locked by security software, or experiences an I/O timeout, the file transfer fails mid-operation. The installer aborts to prevent a corrupted, half-written installation, returning Error 146.

Common Causes

• Cross-Volume Transfer Timeouts: Moving large video libraries or core binaries from a high-speed NVMe boot drive to a mechanical HDD can trigger an I/O write timeout in the installer service.
• Incompatible File Systems: Secondary drives formatted in exFAT, FAT32, or ReFS lack the NTFS security descriptors, hard links, and permission structures required by Adobe software.
• Temporary Directory Clutter: Lingering partial files from previous installation attempts in the temp directory block subsequent move operations. For general extraction and write-permission blocks, consult Error 127: Extracting Files – Permission Denied on Program Files.
• Existing File Collisions: If the target folder already contains an orphaned file of the same name that cannot be overwritten during the move, the installer halts. If a file collision is indicated in the logs, see Error 145: Troubleshooting ‘File Already Exists’ Conflicts.

Diagnostic Contrast

Error Code	Primary Mechanism	Failure Location
Error 146	Cross-Volume Move Failure	Fails when transferring uncompressed files from the temp drive to the destination drive.
Error 145	File Collision / Existing Asset	Fails because a file with the target name already exists in the destination folder.
Error 107	Raw Storage Capacity	Fails during extraction due to insufficient space on the extraction drive.

If your system runs out of overall disk space during extraction rather than failing the move operation, refer to Error 107: Resolving ‘Out of Disk Space’ Errors During Extraction.

Resolution Steps

Step 1: Terminate Creative Cloud Background Processes

1. Press Ctrl + Shift + Esc (Windows) or open Activity Monitor (macOS).
2. End all tasks named:
   • Adobe Creative Cloud
   • Adobe Desktop Service
   • AdobeIPCBroker
   • CoreSync
   • CCXProcess

Step 2: Reset Install Location to Default System Drive

1. Launch the Creative Cloud desktop app.
2. Click your profile icon in the top-right corner and select Preferences.
3. Under the Apps tab, find Install location.
4. Change the dropdown menu to Default (e.g., C:\Program Files\Adobe on Windows or /Applications on macOS).
5. Click Done and retry installing the application.

Step 3: Clear Temporary File Staging Directories

1. Press Win + R, type %temp%, and press Enter.
2. Delete any folders prefixed with Adobe, {CreativeCloud}, or ACC_.
3. Press Win + R, type temp, and press Enter to clear the Windows root temporary directory (C:\Windows\Temp).
4. Empty the Recycle Bin / Trash and restart your system.

Advanced / Professional Checks

If you must install on a secondary physical drive due to system SSD capacity constraints:

• Verify Drive Formatting: Open Disk Management in Windows. Ensure the secondary drive partition is formatted strictly as NTFS with standard 4KB allocation units. Dynamic disks, spanned volumes, and exFAT partitions will consistently fail cross-drive deployments.
• Inspect the Exact Move Failure in Install.log: Navigate to C:\Program Files (x86)\Common Files\Adobe\Installers\Install.log. Search for FATAL and 146. Review the specific file path where the move operation was rejected. If background security software blocked the file move, see Error 108: Conflict with Existing Software – How to Identify the Process.
• Clean Residual Install Data with the Adobe Cleaner Tool: If the installer misidentifies available drive paths due to corrupted installation databases, use the official Adobe Creative Cloud Cleaner Tool to scrub old installation records. For detailed removal instructions, see Manual Uninstallation: How to Use the Adobe Cleaner Tool.

Hard Stops and Escalation

Stop troubleshooting and revert to standard storage paths if:

• The secondary drive is an external USB enclosure, SD card, or network-attached storage (NAS) share. Adobe Creative Cloud desktop applications do not support installation on removable or network volumes.
• The secondary drive reports SMART errors, bad sectors, or drops offline during heavy I/O operations, indicating physical hardware degradation.