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1 Message


100 Points

Tuesday, June 6th, 2023 11:18 PM


Recover foldershield encrypted files from a previous Windows 10 installation

Hello All,

I have a Windows 10 laptop on which I use the TrendMicro Maximum Security product. I used the Folder Shield feature to protect some folders (on the D: drive) against unauthorized changes. The contents of those folders show a lock icon next to each filename to show me that they are protected (*encrypted) by FolderShield.

Now, I had to reformat the C: drive and to reinstall the Windows 10 from scratch. I can access the files on the D: drive, but I cannot open the files that were previously protected by the FolderShield of the previous installation. When I try checking the file ownership properties' I get a message saying that the file cannot be decrypted.

What can I do to access my previously FolderShield protected files? I reinstalled my TrendMicro Maximum Security product and re-associated the new Windows installation with my TM license.

Thank you in advance for your help.



211 Messages


5.3K Points

6 months ago


From what I know, FolderShield does not encrypt files or folder in order to protect them.

See here:

Brand User

Trend Security Expert


29 Messages


630 Points

6 months ago

Hi @claudiubotezatu 


Right on the dot! You are correct, the Trend Micro Folder Shield do not decrypt or hinders users from accessing any files that is added from the previous Trend Micro Solder Shield.



Hi @dundaru


It is likely that the encryption keys or credentials required to decrypt the file were lost during the formatting process. Unfortunately, formatting a Windows OS typically results in the loss of all data, including encryption keys and credentials. 


Please check if the scenarios that you are having is the same with this website, for you to be able to follow the trouble shooting provided "How to Remove Padlock or Lock Icon from Files on Windows 10 -". Don't worry I already checked this website and it is safe to visit. 


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