Dear Fabrice, helpful links, thank you very much. Best wishes, Tomáš Tue, Nov 17, 2020 ve 03:42:35PM -0500 Fabrice L napsal(a): # Hi, # # The solution is rather simple, check here: # [3]https://support.apple.com/en-us/HT202491 # or # [4]https://support.apple.com/en-ca/guide/mac-help/mh40616/macAfter # # # Le 17 nov. 2020 à 15:23, Tomas Hala <[1]tomas.hala@mendelu.cz> a écrit : # Hi all, # # one student of mine asked me for a help with installation TeXlive # (from [2]http://www.tug.org/mactex/mactex-download.html) # on her MacBook Air 16 with macOS Catalina. # # Despite the fact that the site states # "All install packages are developer-signed and notarized by Apple.", # she got: # "Cannot be opened because its from unidentified developer, MacOS cannot # verify that this app is free from malware." # # What could it be? # I have got no experience with MacOS, so I would like to ask for some # hints how we can fix it.