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    MSI release?
    J

    I’m looking forward to deploying PowerArchiver 2023 to my users. Can you tell us when the MSI will be available for download and distribution?

    Thanks.

    Tech Support
    Missing Icons
    LuxorL

    Just tried using the Modern (Windows 10) Icon set and seeing a few missing icons in both PowerArchiver Burner and PowerArchiver Encryption screens . They are all there in the Minimalistik icon set and the only difference I can see is the former is blue and the latter grey. In version 22.00.9

    powerarc_2023-09-18_17-00-19.png

    powerarc_2023-09-18_17-01-05.png

    Tech Support
    Security vulnerabilities in 7zip / Update for PowerArchiver and PACL libraries?
    BigMikeB

    Hi there,

    there were some security issues fixed in 7zip:
    https://www.zerodayinitiative.com/advisories/ZDI-23-1165/
    https://www.zerodayinitiative.com/advisories/ZDI-23-1164/

    As it seems, that PowerArchiver and PACL use the 7zip libraries, could you please update them to the latest version?

    Tech Support
    Virtual Drive
    E

    Hi,

    From where I get PAVD2023.EXE? PowerArchiver 2023 tries to open it.
    But it seems, it tries to download PAVD2021.EXE.

    Thanks

    Tech Support
    Better ZPAQ support
    W

    I noticed that the version of ZPAQ used is older than the latest released 7.15 https://mattmahoney.net/dc/zpaq.html also there seems to be a newer fork that adds several features https://github.com/fcorbelli/zpaqfranz

    It would be useful to implement this latest version (it also maintains the same syntax and behavior as the latest official release if used the -715 flag) and add when opening a zpaq file a choice of the version of the files to show (e.g. as dummy folders represented the various versions present). Since any previous changes are stored with this format, it is possible to extract a snapshot of a certain date/version.

    Tech Support
    Bug with "Encrypt Archive" action
    W

    If I open a password-protected zipper file (created with WinRAR but I think that’s irrelevant), open it with PowerArchiver and run “Remove Encryption” on the same file, then reopen it and add a password with “Encrypt Archive,” the resulting archive will be protected with the old ZipCrypto algorithm and not AES as indicated.
    (this can be verified, for example, by trying to open the archive files with Windows Explorer, which does not support the AES algorithm)

    Tech Support
    PA 21.00.18 Action / Test behaves oddly for me on .PA files
    Brian GregoryB

    PA 21.00.18 running on Windows 7 64 bit.
    I made a big .PA file and thought I’d check it was made correctly with Menu / Actions / Test.
    Discovered:
    a) PA always issues a UAC prompt to do this!
    b) PA always says there are many errors in PA files.

    Tech Support

    PA Comparison with WinZip is unfair

    Tech Support
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    • D
      deipotent
      last edited by

      On the main PA web page you claim

      “Create unlimited sized ZIP files with fast and strong compression that outperforms WinZip.”

      While this is probably true, and PA does create slightly smaller ZIP archives. WinZip has a crucial advantage over PA in that it automatically detects if the archive will be bigger than 4GB or contain over 65535 files. This is why the ZIP archives are slightly bigger.

      PA has to have this option set by the user before the archive is created.

      Don’t get me wrong, I prefer PA and it is my main archiver, but I think PA should also have this feature.

      1 Reply Last reply Reply Quote 0
      • K
        klumy
        last edited by

        I support this wish ;)

        1 Reply Last reply Reply Quote 0
        • spwolfS
          spwolf conexware
          last edited by

          Hi,

          PowerArchiver has an option “Make large ZIP archive”, which will automatically detect if you need to use 4.5 spec format for large archives. If you check this option, and create smaller file than 4 GB- PowerArchiver will correctly detect that you do not need PkWare 4.5 format and will use 2.0 format instead.

          That has nothing to do with compression size, they both store same header info, PowerArchiver just creates smaller archives…

          thanks for the thought…

          D A 2 Replies Last reply Reply Quote 0
          • D
            deipotent @spwolf
            last edited by

            Why bother having this option in the first place then ? There’s no point.

            You might as well enable this option by default, and remove the option from the GUI. Insted you could replace it with an option “Notify if Zip64 archive created” which, if enabled, would display a message telling the user that “…a Zip64 archive was created. This will only be compatible with other applications that support the Zip64 standard.”

            spwolfS 1 Reply Last reply Reply Quote 0
            • A
              awo @spwolf
              last edited by

              @spwolf:

              PowerArchiver has an option “Make large ZIP archive”, which will automatically detect if you need to use 4.5 spec format for large archives. If you check this option, and create smaller file than 4 GB- PowerArchiver will correctly detect that you do not need PkWare 4.5 format and will use 2.0 format instead.

              But in this thread, you wrote: “Flag makes PA create archives in PkZip 4.5 format, and a lot of other archives can not read files create with 4.5 format…”. Isn’t that a contradiction? :confused:

              1 Reply Last reply Reply Quote 0
              • spwolfS
                spwolf conexware @deipotent
                last edited by

                @deipotent:

                Why bother having this option in the first place then ? There’s no point.

                You might as well enable this option by default, and remove the option from the GUI. Insted you could replace it with an option “Notify if Zip64 archive created” which, if enabled, would display a message telling the user that “…a Zip64 archive was created. This will only be compatible with other applications that support the Zip64 standard.”

                Option was originally made long time ago - when nobody but PA and PkWare had support for creating large archives, so most likely by creating this kind of archive you would not be able to share it with anyone.

                We were already planning to remove it from PA 2005 since by now there are enough programs that support PkWare 4.5 to make it redundant.

                thanks!

                D 1 Reply Last reply Reply Quote 0
                • D
                  deipotent @spwolf
                  last edited by

                  I still don’t fully understand because in your original reply you said that PA would use 2.0 format when possible, only using the new 4.5 standard (ie. Zip64) when the resultant archive would be larger than 4GB or it contained more than 65535 files in it.

                  If this is the case, then there was never really a need for this option in the first place.

                  From a previous post by you a while back, you said that if this option was not enabled and you tried to create an archive greater than 4GB or with more than 65535 files, it would create a broken archive.

                  I’m confused……

                  Does PA automatically detect if 4.5 standard should be used, or not ?

                  TBGBeT 1 Reply Last reply Reply Quote 0
                  • TBGBeT
                    TBGBe @deipotent
                    last edited by

                    With the flag NOT checked, PA uses 2.0 format and does not check if this results in an invalid archive.

                    With the flag checked, PA uses 2.0 format unless Archive would be greater than 4GB - in which case it uses 4.5 format. Checking the number of files 65535 is easy to understand.

                    Just wondering, without performing the compression first - how does PA “guess” the (not yet) generated Archive size ? Presumably this also depends on the actual compression options : maximum, normal, store etc.

                    D spwolfS 2 Replies Last reply Reply Quote 0
                    • D
                      deipotent @TBGBe
                      last edited by

                      @TBGBe:

                      With the flag NOT checked, PA uses 2.0 format and does not check if this results in an invalid archive.

                      With the flag checked, PA uses 2.0 format unless Archive would be greater than 4GB - in which case it uses 4.5 format. Checking the number of files 65535 is easy to understand.

                      Just wondering, without performing the compression first - how does PA “guess” the (not yet) generated Archive size ? Presumably this also depends on the actual compression options : maximum, normal, store etc.

                      Now I get it. Has someone checked that PA automatically creates a 4.5 format archive with an archive that ends up larger than 4GB but has less than 65535 files ?

                      spwolfS 1 Reply Last reply Reply Quote 0
                      • spwolfS
                        spwolf conexware @TBGBe
                        last edited by

                        I personally dont have technical knowledge of how does our zip component do that - originally we were not too trusty if it will actually correctly work (if it will be able to correctly guess which format to use) but after few years of using it - it works fine. Without looking at ZIP header/central directory info, I would guess it is done “on the fly” - since header information is different for each file.

                        So if you leave “Make large zip archive” checked, PowerArchiver will automatically detect if 4.5 format needs to be used or not. It might seem as if option is not needed anymore, but again - at the time we introduced it, it was needed or at least we thought it was so.

                        In any case, you are safe to leave it checked and it will work perfectly fine.

                        thanks,

                        1 Reply Last reply Reply Quote 0
                        • spwolfS
                          spwolf conexware @deipotent
                          last edited by

                          @deipotent:

                          Now I get it. Has someone checked that PA automatically creates a 4.5 format archive with an archive that ends up larger than 4GB but has less than 65535 files ?

                          Yep, it has been working fine for 2.5 years now. As mentioned above, I think it is done on the fly so once treshold is reached, 4.5 format is used.

                          thanks,

                          1 Reply Last reply Reply Quote 0
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