i moved libre to a windows 11 laptop . now files are denied
??
You installed LibreOffice on the new computer or did you simply moved files?
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Is starting LibreOffice your problem or accessing your own documents created with LibreOffice? If your own files are denied, check, of you are the owner of your files. I’ve seen cases, where the user of the old computer was still “owner” and access for the new user on new computer needs to be granted by admin.
Please see this page, Defender Controlled folder access exception for LibreOffice - The Document Foundation Wiki
If you are using a different antivirus then you would have to add LibreOffice (soffice.bin) to the Allowed list for that anti virus.