Previews are not being generated when requested

[simone_zini97]

Verison: 11.0

Windows 10 21H1

I deleted the previews from windows explorer and then when I asked to generate standard previews it went on fast as if they were already there. Now if I change picture in the library I see it's generating them as I go throught the album

[johnrellis]

Did you exit LR before deleting the previews?

[simone_zini97]

I am not sure, however I have fixed the issue by delting everything, except the catalog and the pictures obviously