How to Clean Adobe Premiere Pro Media Cache Files (.mcf and .pek)
Location & Quick Verdict
%AppData%\Adobe\Common\Media Cache Files
Premiere Pro creates peak (.pek) waveform files and conformed video streams in Media Cache Files for every imported video.
How Windows Manages Adobe Premiere Pro Media Cache Files (.mcf and .pek) on NTFS & NVMe Drives
Windows 10 and Windows 11 maintain hidden system directories and root-level allocation files at %AppData%\Adobe\Common\Media Cache Files to handle shell thumbnail databases, prefetcher launch traces, hibernation power states, and user-profile scratch storage. Because many of these paths are marked with +H (Hidden) or +S (System) attributes or guarded by SYSTEM ACL permissions, standard folder size scans often miss them entirely.
Over time, orphaned temporary files, stale Explorer DataCache_* buckets, and uncompacted virtual storage allocations inside %AppData%\Adobe\Common\Media Cache Files lock up 10.0 GB – 85.0 GB of primary C: drive space. Cleaning Adobe Premiere Pro Media Cache Files (.mcf and .pek) using the proper administrative method restores drive headroom safely.
# Inspect current disk footprint of Adobe Premiere Pro Media Cache Files (.mcf and .pek) (Read-Only)
$target = "$env:APPDATA\Adobe\Common\Media Cache Files"
Get-ChildItem -Path $target -Recurse -Force -ErrorAction SilentlyContinue |
Measure-Object -Property Length -Sum |
Select-Object Count, @{Name="SizeGB";Expression={[math]::Round($_.Sum / 1GB, 2)}}
Manual Cleaning Instructions
- 1 In Premiere Pro, go to Edit > Preferences > Media Cache.
- 2 Click 'Delete' next to Remove Media Cache Files, choosing 'Delete all media cache files'.
- 3 Or delete the contents of %AppData%\Adobe\Common\Media Cache Files manually.
Note: If Windows alerts that a file is in use or locked by a background process, close the associated task in Task Manager before deleting, or use SWEEPR Cleaner to release locked handles safely.
Sub-Folders & Cache Locations Breakdown for Adobe Premiere Pro Media Cache Files (.mcf and .pek)
Modern Windows applications and system services split their disk footprint across multiple sub-directories (`Cache_Data`, `Service Worker\CacheStorage`, `Code Cache`, `GPUCache`, and `Crashpad\reports`). Review which sub-folders inside Adobe Premiere Pro Media Cache Files (.mcf and .pek) are safe to purge and which files remain protected:
| Sub-Folder / Cache Location | Storage Role | Typical Footprint | Deletion Safety |
|---|---|---|---|
| %AppData%\Adobe\Common\Media Cache Files | Primary System Scratch, Thumbnail/Icon DB or Virtual Allocation | 10.0 GB – 85.0 GB | 🟢 100% Safe (Unlocked Files) |
| %LocalAppData%\Temp & C:\Windows\Temp | Orphaned Installer Extraction & Session Scratch Files | 1.5 GB – 18.0 GB | 🟢 100% Safe |
| %LocalAppData%\Microsoft\Windows\Explorer (thumbcache_*.db) | Cached File Explorer Image & Video Thumbnail Databases | 250 MB – 3.0 GB | 🟢 100% Safe (Rebuilds Automatically) |
| User Documents, Desktop & Registry Hives | Personal Files, Boot Configuration & System Certificates | Protected | 🔒 Protected — Never Touched |
Frequently Asked Questions
Is it safe to delete Adobe Premiere Pro Media Cache Files (.mcf and .pek)?
Yes, 100% safe. Completely safe to delete. Premiere Pro easily regenerates audio waveforms when projects are reopened.
How much storage space will cleaning Adobe Premiere Pro Media Cache Files (.mcf and .pek) free up?
Users typically reclaim 10.0 GB – 85.0 GB on Windows 10 and Windows 11 systems depending on update frequency and active cache retention in %AppData%\Adobe\Common\Media Cache Files.
Why does Windows say some files in Adobe Premiere Pro Media Cache Files (.mcf and .pek) are "In Use" when I try to delete them?
Active background processes (such as explorer.exe, svchost.exe, or running desktop apps) hold open file handles to current session scratch files. Skipping locked files—or letting SWEEPR Cleaner clean unlocked items automatically—is normal and completely safe.
Where is Adobe Premiere Pro Media Cache Files (.mcf and .pek) located on Windows 10 and Windows 11?
It is stored at %AppData%\Adobe\Common\Media Cache Files. You can paste that path directly into the Windows Run dialog (Win + R) or File Explorer address bar to inspect it.
Manual File Explorer vs. 1-Click SWEEPR Cleanup
| Feature | Manual Deletion | SWEEPR Cleaner |
|---|---|---|
| Locked File Handling | Fails on locked processes | Safe background release |
| Accidental Deletion Risk | Moderate (easy to delete wrong folder) | Zero (strict rules & hashes) |
| Safety Undo Rollback | None (Shift+Del is permanent) | 7-Day Automatic Rollback |
| Time Required | 10–20 minutes per app | < 60 seconds across 40+ areas |
Related Windows Cleanup Guides & Hidden Space Hogs
Clean Adobe Premiere Pro Media Cache Files (.mcf and .pek) Automatically
SWEEPR Cleaner safely clears Adobe Premiere Pro Media Cache Files (.mcf and .pek) along with 40+ other hidden app folders and leftover files in one click—covering up to 5 devices (Windows, Mac, Android & iOS) with a 7-day undo safety net.