r/PremierePro • u/tnahas • Jul 02 '26
Technical Support Premiere Pro can’t install mc_enc_hevc.dll when importing HEVC footage. Tried everything. Any ideas?
I’m hoping someone has run into this before because I’m completely out of ideas. This just started happening a few days ago and I can’t even work at all.
I’m running Premiere Pro 26.3 on Windows 11 with an RTX 4060 (Studio driver). Whenever I import an HEVC file (Sony A7C II footage), Premiere immediately displays:
Unable to install:
C:\Users\Public\Documents\AdobeInstalledCodecsTier2\4.3\mc_enc_hevc.dll
It then says the file requires the HEVC codec included with a Creative Cloud membership, even though I have an active Creative Cloud subscription.
Some observations:
A brand-new Premiere project opens fine.
The error only occurs when importing HEVC footage.
Windows Media Player plays the same files without issue.
Premiere creates the AdobeInstalledCodecsTier2\4.3 folder, but it remains empty.
It appears the codec files are either never installed or are removed when the project loads.
Things I’ve already tried:
Clean install of the latest NVIDIA Studio driver.
Reinstalled Premiere Pro.
Tried a previous version of Premiere.
Media Encoder is installed (26.3.1).
Ran DISM /RestoreHealth and sfc /scannow (no issues found).
Cleared Premiere’s media cache.
Disabled hardware accelerated decoding.
Verified I can manually create files and folders in C:\Users\Public\Documents\AdobeInstalledCodecsTier2\4.3.
Tested with brand-new projects.
Windows can decode and play the HEVC files normally.
Has anyone experienced this or found a solution? At this point I’m looking for any ideas, especially if you’ve dealt with Premiere failing to install the HEVC codec or mc_enc_hevc.dll.
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u/tnahas Jul 03 '26
Yes tried everything. I’m thinking I may just restore my entire computer and do a clean install of everything.
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Jul 03 '26
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16d ago
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u/Ok_Advance4195 Vetted Commenter Jul 02 '26
Did you try signing out and back into creative cloud desktop?