I recently upgraded from Windows 10 to Windows 11. 7zipis still installed at the latest version and opens as a stand alone, but it's no longer in my right click menu. I have uninstalled and re-installed, but it's not embedding. Are there tips or work arounds for this? Thanks!
Hi Igor, I did, see screenshot I uploaded on September 3rd with calculated hashes. It makes no sense to upload a ZIP file here. CRC hashes are not comparable between version 24/25 and older versions as it seems recent versions 24/25 don't include the folder to calculate the hash. I think only filenames and data are taken into account to calculate the hash. My question: is this on purpose or is this a bug? Will this be corrected in updates/new versions?
I user command : wondersoft@wondersoftdeMac-mini-2 Format7zF % make -j -f ../../cmpl_mac_arm64.mak And it can build the shard library of 7z. Now i need to compile the static version , what should i do . Thanks.
i edited my previous reply so you cna understand it, i am not gonna write more replies because i barely discovered just a few seconds ago that this forum indicates when was the last time every edited reply was edited, so i want to clarify that ignore my 2 last replies, and i want that only answer my post if you understand it, i want to clarify that i am sorry for all the inconveniences caused, i will eventually edit this reply to make it clear so when it gets clear if it is not clear yet; answer...
i edited my previous reply so you cna understand it, i am not gonna write more replies because i barely discovered just a few seconds ago that this forum indicates when was the last time every edited reply was edited, so i want to clarify that ignore my 2 last replies, and i want that only answer my post if you understand it, i want to clarify that i am sorry for all the inconveniences caused
i edited my previous reply so you cna understand it, i am not gonna write more replies because i barely discovered just a few seconds ago that this forum indicates when was the last time every edited reply was edited, so i want to clarify that ignore my 2 last replies, and i want that only answer my post if you understand it
i edited my previous reply so you cna understand it
i eidted my previous reply so you cna understand it
i eidted my previous reply so you cna understand it
i eidted my previous rpely so you cna understand it
I did that change in " 7-zip Options... ", and i don ́t remember how?, i am not even sure if i did it, after i left clicked an exe extension file and in the Windows that appeared showing "Show more options" i left clicked "Show more options" and then in the window that appeared left clicked in "Properties" to the left of " Description: " it says: " 7z SFX "
I did that change in " 7-zip Options... ", and i don ́t remember how?, i am not even sure if i did it, after i left clicked an exe extension file and in the Windows that appeared showing "Show more options" i left clicked "Show more options" and then in the window that appeared left clicked in "Properties" to the left of " Description: " it says: " 7z SFX "
I did that change in " 7-zip Options... ", and i don ́t remember how?, i am not even sure if i did it, after i left clicked an exe extension file and in the Windows that appeared showing "Show more options" i left clicked "Show more options" and then in the window that appeared left clicked in "Properties" to the left of " Description: " it says: " 7z SFX "
I did that change in " 7-zip Options... ", and i don ́t remember how?, i am not even ure if i did it, after i left clicked an exe extension file and in the Windows that appeared showing "Show more options" i left clicked "Show more options" and then in the window that appeared left clicked in "Properties" to the left of " Description: " it says: " 7z SFX "
I did that change in " 7-zip Options... ", and i don ́t remember how?, after i left clicked an exe extension file and in the Windows that appeared showing "Show more options" i left clicked "Show more options" and then in the window that appeared left clicked in "Properties" to the left of " Description: " it says: " 7z SFX "
I did that change in " 7-zip Options... ", and i don ́t remember how?, after i left clicked an exe extension file and in the Windows that appeared showing "Show more options" i left clicked "Show more options" and then in the window that appeared left clicked in "Properties" to the left of " Description: " it says: " 7z SFX "
Hello, unfortunately I tried the same and found that per default all new files were left unencryted - so may Igor please explain HOW this could be avoided/configured for having a useful GUI within adding files to an encryted archives encryted as well? ;->)
I want to be able to make a .7z archive of files by right click and "Add to <filename>.7z</filename>" option in the context menu BUT... I want to do this by using the same password everytime with filename ecryption enabled. I was wondering if there is a registry edit or something alike to do this
This is either some serious trolling or wanglin has no idea how any of this works.
Ha, I didn't know forceuid;forcegid didn't need parameters. But in that case it does need uid=x,guid=x. dmesg gives me: CIFS: ignoring forceuid mount option specified with no uid= option CIFS: ignoring forcegid mount option specified with no gid= option But the noperm does seem to do the trick !!!! (and no need for uid=x,guid=x) Yeah.... Thanks a million 👍 So command that worked: mount -t cifs //192.168.2.254/Rik /mnt/share88 -o credentials=/root/.smbcredentials,noperm,vers=2.1,iocharset=utf8,file_mode=0777,dir_mode=0777...
Question formats 7z and zx test corruption
I wrote that instead of setting uid=1000;gid=1000 set options: forceuid;forcegid, noperm, dynperm, guest, so something like this (forceuid and forcegid don't take arguments): mount -t cifs //192.168.2.254/Rik /mnt/share88 -o credentials=/root/.smbcredentials,forceuid,forcegid,vers=2.1,iocharset=utf8,file_mode=0777,dir_mode=0777 mount -t cifs //192.168.2.254/Rik /mnt/share88 -o credentials=/root/.smbcredentials,noperm,vers=2.1,iocharset=utf8,file_mode=0777,dir_mode=0777 mount -t cifs //192.168.2.254/Rik...
BTW. I see that the extraction under different user is successful BUT... The time is not set. The original file in the test.7z is from pi@space01:/mnt/share $ ls a -ltr -rwxrwxrwx 1 pi pi 0 Oct 6 13:59 a* When extracting under different user (with error): rik@space01:/mnt/share$ ls a -ltr -rwxrwxrwx 1 pi pi 0 Oct 7 11:03 a So the "Cannot set file attribute" is from setting the time. Why would that not be possible under Linux when the permissions are 777? I can do a touch on the file on that share...
BTW. I see that the extraction under different user is successful BUT... The time is not set. The original file in the test.7z is from pi@space01:/mnt/share $ ls a -ltr -rwxrwxrwx 1 pi pi 0 Oct 6 13:59 a* When extracting under different user (with error): rik@space01:/mnt/share$ ls a -ltr -rwxrwxrwx 1 pi pi 0 Oct 7 11:03 a So the "Cannot set file attribute" is from setting the time. Why would that not be possible under Linux when the permissions are 777? I can do a touch on the file on that share...
During mount forceuid/gid was already used. From dmesg: enabling forceuid mount option implicitly because uid= option is specified I tried it for another user and it really only gives an error when the user is forced to a different user than the one from the 7zz process. For extra information. It's a WD MyCloud NAS. I mount the share as mount -t cifs //192.168.2.254/Rik /mnt/share88 -o credentials=/root/.smbcredentials,uid=1000,gid=1000,forceuid=1000,forcegid=1000,vers=2.1,iocharset=utf8,file_mode=0777,dir_mode=0777...
Instead of setting uid=1000;gid=1000 in samba mount you may try other options to support any user: forceuid;forcegid, noperm, dynperm, guest.
O WOW. Yes, that works. Thanks. Normally the NAS is mounted as root but with all the permissions. -rwxrwxrwx root root When 7zz tries to change the permissions they stay at root 777 and it produces an error (not permitted). When I mount the NAS with the suggested uid=1000,gid=1000 it mounts as user pi. -rwxrwxrwx pi pi Then when extracting, it doesn't produce the error, but the permissions stay 777 because the NAS enforces that. Weird that 7zz produces an error when it detects user root and not for...
@Rik Add uid=1000;gid=1000 to your mount samba share options.
You should know password from source you get that packed encrypted file.
are you crazy? in your world, you just need "tar" only, but in my world, I use 7zip compress log files etc over to 20% even less, it's not only save my disk space, and also save out network traffic, yes, it's save many power and my time
Can the 7z file corruption test only be performed with 7-Zip? Can no other compression software perform this test? For example, WinRAR. I use 7Zip and several other programs, including WinRAR and WinZip.
In modern society, we must learn to trade space for time. Consider the cost of a 1TB solid-state drive or a 1TB mechanical hard drive. Compression software algorithms should not be used. For file compression, simply set it to store only the files. This approach compresses and decompresses quickly. Even with the best compression algorithms, the space savings compared to storing files as-is are less than 0.1%. Sometimes files actually grow larger due to compression, slowing down the process, wasting...
However I don't know it may works though. I have tried it and it works as intended. Any LF file is converted to CRLF in repository. Commited and pushed two files in a fork, one via browser and one via git. You can check for yourself here. Whether you clone or download it, they will be CRLF files. I even got warning from git then commiting: $ git add hello.1 warning: LF will be replaced by CRLF in hello.1. The file will have its original line endings in your working directory. $ git commit -m"add...
I'm having trouble decoding a block of LZMA2 data using the C# API. As far as I can tell, it should be something like this (and skipping the reading of 5 bytes in Decoder.Init()): MemoryStream source_stream = new MemoryStream( data.SourceData!, false ); MemoryStream destination_stream = new MemoryStream( data.DestinationData!, true ); SevenZip.Compression.LZMA.Decoder decoder = new SevenZip.Compression.LZMA.Decoder(); uint8[] settings = GetOldProperties( data.DictionarySize ); decoder.SetDecoderProperties(...
I did created the .gitattributes now. However I don't know it may works though.
With me it behaves differently. After renaming the bb folder to aa, I only see one aa folder with two files in it. So basically the two folders are merged into one. After that when trying to add a file, I get the error message "Error Creating File" "Not implemented".
With me it behaves differently. After renaming the bb folder to aa, I only see one aa folder with two files in it. So basically the two folders are merged into one. After that when trying to add a file, I get the error message "Not implemented".
I don't know how this `.editorconfig' file works but you may want to have a look at `.gitattributes'. Something like: * text auto eol=crlf *.ttt eol=crlf *.txt eol=crlf I have to admit I don't get what actually `auto' does and how it works, as it's pretty magical, but putting `eol=crlf' will make sure line ending in repository is CRLF. Does the Wine User will affected? No problem with that. Seems to work with 'your' translations just fine.
I created back in September 29, 2025 repository in GitHub which I will called 7-Zip Language Pack. However for some circumstances, Here is the link: https://github.com/PopuriAO29/7zip-lang These repository only allowed for Windows Users who do want use CR+LF Line Ending. However, Starting in 24.00 Beta, the Language text files changed as LF File (with the exception of Japanese since it uses CR+LF). Users who have Notepad2e (found at here) or use old version Notepad2 can also change Line Ending, selecting:...
Correction : Hello I found a a bug. If in a Zip there is 2 folders aa and bb (with file in each folder). If you rename the folder bb in aa. It will rename it. But now if you add a file in the zip file, 7-zip will close on his own You can test with the attached Test.zip file the previous one was not good
Bug when rename folder while folder name already taken
Thanks for report! I'll fix that issue with another way in next version of 7-Zip.
Enabling MSVC's LTCG or Clang's LTO breaks SfxSetup.sfx, because the changing of the start and end IDs is moved to compile-time. This makes the code try to parse its own executable as the configuration file. The attached patch fixes this.
File is processed so: encrypted -> AES -> compressed -> LZMA2 -> uncompressed. Read https://7-zip.org/recover.html you must create another 7z archive with same password but without compression (Store method). And use procedure as described here: https://7-zip.org/recover.html Then you will get compressed data where first 16 bytes in lzma2 are incorrect, because you have no AES-IV headers from the end of archive. So you must parse lzma2 stream up to next LZMA2 recovery point (end of chunk). And then...
File is processed so: encrypted -> AES -> compressed -> LZMA2 -> uncompressed. Read https://7-zip.org/recover.html you must create another 7z archive with same password but without compression (Store method). And use procedure as described here: https://7-zip.org/recover.html Then you will get compressed data where first 16 bytes in lzma2 are incorrect, because you have no AES-IV headers from the end of archive. So you must parse lzma2 stream up to next LZMA2 recovery point (end of chunk). And then...
File is processed so: encrypted -> AES -> compressed -> LZMA2 -> uncompressed. Read https://7-zip.org/recover.html you must create another 7z archive with same password but without compression (Store method). And use procedure as described here: https://7-zip.org/recover.html Then you will get compressed data where first 16 bytes in lzma2 are incorrect, because you have no AES-IV headers from the end of archive. So you must parse lzma2 stream up to next LZMA2 recovery point (end of chunk). And then...
File is processed so: encrypted -> AES -> compressed -> LZMA2 -> uncompressed. Read https://7-zip.org/recover.html you must create another 7z archive with same passwordm but without compression (Store method). And use procedure as described here: https://7-zip.org/recover.html Then you will get compressed data where first 16 bytes in lzma2 stream that are incorrect, because you have no AES-IV headers from the end of archive. So you must parse lzma2 stream up to next LZMA2 recovery point (end of chunk)....
File is processed so: encrypted -> AES -> compressed -> LZMA2 -> uncompressed. You must change 7-Zip source code to exclude LZMA2 stage. Then you process only with AES stage to get compressed data. It's descibed in recover page description. Then you will get compressed data where first 16 bytes in lzma2 stream are incorrect, because you have no AES-IV headers from the end of archive. So you must parse lzma2 stream up to next LZMA2 recovery point (end of chunk). And then you can decompress lzma2 stream...
File is processed so: encrypted -> AES -> compressed -> LZMA2 -> uncompressed. You must change 7-Zip source code to exclude LZMA2 stage. Then you process only with AES stage to get compressed data. It's вуысшиув in recover page description. Then you will get compressed data where first 16 bytes in lzma2 stream are incorrect, because you have no AES-IV headers from the end of archive. So you must parse lzma2 stream up to next LZMA2 recovery point (end of chunk). And then you can decompress lzma2 stream...
File is processed so: encrypted -> AES -> compressed -> LZMA2 -> uncompressed. You must change 7-Zip source code to exclude LZMA2 stage. Then you process only with AES stage to get compressed data. It's ышьшдфк ещ зкщсувгку in recover page description. Then you will get compressed data where first 16 bytes in lzma2 stream are incorrect, because you have no AES-IV headers from the end of archive. So you must parse lzma2 stream up to next LZMA2 recovery point (end of chunk). And then you can decompress...
Аile is processed so: encrypted -> AES -> compressed -> LZMA2 -> uncompressed. You must change 7-Zip source code to exclude LZMA2 stage. Then you process only with AES stage to get compressed data. It's ышьшдфк ещ зкщсувгку in recover page description. Then you will get compressed data where first 16 bytes in lzma2 stream are incorrect, because you have no AES-IV headers from the end of archive. So you must parse lzma2 stream up to next LZMA2 recovery point (end of chunk). And then you can decompress...
Any advice of where i can start?
Start of archive is correct, but end of archive is incorrect or corrupted. If you know correct password, it's possible to try to recover some data from start of archive, but it's very difficult task for such case. It can recover 0% or 0.1% or 1% or 10-50% of original data after hard work for programmer.
End of archive is incorrect and corrupted. If you know correct password, it's possible to try to recover some data from start of archive, but it's very difficult task for such case. It can recover 0% or 0.1% or 1% or 10-50% of original data after hard work for programmer.
02A291D330: 63 08 27 88 39 B3 B4 19 BD CB D1 CB 19 45 E0 A9 02A291D340: 8F 8C 42 85 43 FA 5F 60 DE E9 5A 1F FE A8 34 1B 02A291D360: 45 8A F4 66 0F 06 DA 17 2B 4F C3 DE CA CC 49 15 02A291D370: FA 18 DE AB D3 F4 91 4A 6E 85 C2 ED F5 77 95 FA 02A291D380: 1F
show at least 64 last bytes.
02A291D370: FA 18 DE AB D3 F4 91 4A 6E 85 C2 ED F5 77 95 FA 02A291D380: 1F
7-Zip supports rar extraction
look last bytes of archive in hex
For the Millionth Time And I’m Surely Not the Only One
It is most likely not - the zero length of the file may indicate that its data flow was overwritten, as well as damaged headlines can indicate an error for the error of the file system. Here it is worth seeing whether there are any errors in the file system by launching the administrator from the contain OS console CHKDSK program with the command chkdsk diskletter: /v and see what it will lead to the log. This operation is performed in reading and changes to the file system, but if it finds errors...
It is most likely not - the zero length of the file may indicate that its data flow was overwritten, as well as damaged headlines can indicate an error for the error of the file system. Here it is worth seeing whether there are any errors in the file system by launching the administrator from the contain OS console CHKDSK program with the command *chkdsk disk: /v * and see what it will lead to the log. This operation is performed in reading and changes to the file system, but if it finds errors reports...
It is most likely not - the zero length of the file may indicate that its data flow was overwritten, as well as damaged headlines can indicate an error for the error of the file system. Here it is worth seeing whether there are any errors in the file system by launching the administrator from the contain OS console CHKDSK program with the command *chkdsk <disk_letter>: /v *</disk_letter> and see what it will lead to the log. This operation is performed in reading and changes to the file system, but...
I am experiencing an issue with some password-protected 7zip files that were accidentally deleted from a folder. After using a file recovery tool, I managed to restore them, but encountered two different situations: The files retained their original names but show as 0KB in size. The files retained their original sizes (e.g., 11,052,148KB) but display header error messages when I try to open them. HEADERS: 0000000000: 37 7A BC AF 27 1C 00 04 93 4E 78 5C 3B D3 91 A2 0000000010: 02 00 00 00 26 00 00...
Cannot open .7z archive - Headers Error
Cybersecurity Maturity Model Certification (CMMC) compliance has become an essential part of some US government contracts. Part of that compliance will include encrypting files using a FIPS 192 compliant application. This library would help achieve that goal.
Hi Igor, first of all, i really appreciate your hard work for so many years! You have built an incredible software which is used and loved by many millions of people worldwide. I would like to assure you that no matter what you do going forward, your legacy with 7zip has been cemented in the anals of time as one of the most useful and trusted software ever! But these honest compliments do not go wasted on my (i am just a big fan of your software since over 2 decades!) support for the feature request...
Hi Igor, first of all, i really appreciate your hard work for so many years! You have built an incredible software which is used and loved by many millions of people worldwide. I would like to assure you that no matter what you do going forward, your legacy with 7zip has been cemented in the anals of time as one of the most useful and trusted software ever! But these honest compliments do not go wasted on my (i am just a big fan of your software since over a decade!) support for the feature request...
7zip is undoubtedly an amazing software and essential tool for many people. it would be really nice to include some basic quality of life improvements. the first that comes to mind and which i miss the most every single time that i open 7zip is... dark mode! i have dark mode enabled on my Windows PC overall, but 7zip doesn't play along and it does not have the built-in setting. Could someone please consider this feature addition? Thank you for all your hard work. It's much appreciated.
it is my first time using 7-zip app but unfortunately it requires me to give password. anyone to help me please
I've just saw legacyupdate.net site whereas the message as shown this: "Our code signing certificate is expiring. We’re looking at free options, but may need to purchase the same certificate again for 369ドル USD. Your support is appreciated to help us reach this goal and continue working on Legacy Update for another 2 years." LegacyUpdate version is 1.12, whereas the certificate digital sign will be expired on October 2, 2025. That is where it signed two years. For my contrast about 7-Zip License,...
7-zip crashes upon folder delete
You can extract directory with full path and then move directory after extraction.
I combine this split 7 zip files, and when i try to open the file it said password incorrect/error what can i do to fix this?
Suppose I have a .7z archive file with contents: myarchive.7z\folder\subfolder\file.txt myarchive.7z\folder\subfolder\furthersubfolder\file2.txt I would like to use commandline to extract the "subfolder" folder to a given output directory (the equivalent of just dragging and dropping "subfolder" from the .7z GUI into the "output" folder in File Explorer). However, I cannot figure out how to do this. Basically, I want to get the following output: output\subfolder\furthersubfolder\file.txt output\subfolder\file.txt...
OK. Windows with D: drive present. 1. In 7-zip settings, change Working folder to D:\ and uncheck "Use for removable drives only" 2. Download the TXZ file to D:\ 3. Open it in 7-zip 4. Open TAR file inside 7-zip (doubleclick TAR file) 5. Try to delete the "doc" directory inside the "usr" directory. Confirm. 6. Halfway the operation the error appears: "The system cannot find the file specified" 7. When clicking OK 7-zip crashes. Only problem now is, I can't reproduce the bug anymore. It's gone. Well...
OK. Windows with D: drive present. 1. In 7-zip settings, change Working folder to D:\ and uncheck "Use for removable drives only" 2. Download the TXZ file to D:\ 3. Open it in 7-zip 4. Open TAR file inside 7-zip (doubleclick TAR file) 5. Try to delete the "doc" directory inside the "usr" directory. Confirm. 6. Halfway the operation the error appears: "The system cannot find the file specified" 7. When clicking OK 7-zip crashes. Only problem now is, I can't reproduce the bug anymore. It's gone. Well...
Please describe all your actions instead of video file.
File is from: https://slackware.nl/people/alien/slackbuilds/chromium-ungoogled/pkg64/15.0/chromium-ungoogled-140.0.7339.185-x86_64-1alien.txz
Can anybody reproduce this?
Crash deleting files in txz archive with custom temp folder