WinRAR 5.50 (64-bit)

# Bugs fixed:
- if ZIP archive contained an archive comment shorter than 24 characters, the comment page was not displayed in archive properties in Windows Explorer;
- 'WinRAR x *.rar' command crashed if complete .part1.rar, .part2.rar, ..., .partN.rar volume set was found when expanding *.rar mask.

* Tidied up main tool bar for easier access to sharing operations e.g. send to cloud or folder
* Security update Fixed an issue regarding file shredding when encrypting files
* Other minor UI bug fixes
* Free upgrade for all version 6 users

# Bugs fixed:
- RAR exited with code 6 (file open error) instead of expected code 10 (no files found) if file name specified for archiving did not exist;
- WinRAR could issue an excessive sound notification in the middle of archiving if sound was enabled in WinRAR settings and "Put each file to separate archive" option turned on;
- WinRAR did not delete a temporary file if ZIP archive modification was aborted, because ZIP archive had the read-only attribute;
- WinRAR crashed if "Print file" command was applied to a file or folder without extension.

- Switch -scul can be used to process big endian UTF-16 list files, provided that they have the correct byte order mark. Previously it supported only little endian file lists.
- 5.40 beta 1 did not work on CPU without SSE2 instruction set.
- It could take excessively long time to cancel WinRAR "Repair" command on some corrupt archives.
- If "Generate archive name by mask" option was used and archive was created in a system protected folder requiring privileges elevation, mask was added to archive name twice.

No change log.

- "Name encoding" submenu in "Options" menu allows to select encoding for archived file names. This selection affects archive browsing and extraction commands. You can use Ctrl+E keyboard shortcut to access this menu quickly. It can be useful when unpacking an archive without Unicode file names.
- If RAR recovery volumes (.rev files) are present in the same folder as usual RAR volumes, archive test command verifies .rev contents after completing testing .rar files. If you wish to test only .rev files without checking .rar volumes, you can select .rev files in WinRAR file list and apply "Test" only to them or run: rar t arcname.part1.rev in the command line.
- While NTFS file system permits file names with trailing spaces and dots, a lot of Windows programs fail to process such names correctly. If "Allow potentially incompatible names" option in "Advanced" page of extraction dialog is turned off, WinRAR removes trailing spaces and dots, if any, from file names when extracting. This option is turned off by default. Command line RAR also removes trailing spaces and dots when extracting unless -oni switch is specified.
- Previously "Synchronize archive contents" update mode (-as command line switch) aborted if some of archiving folders could not be read. Now WinRAR continues performing the operation and preserves archived files matching unreadable folders.
- WinRAR Shift+Del delete command can be used to delete folders containing non-standard file names with trailing spaces and dots. Usual delete to Recycle Bin also as Shift+Del in previous WinRAR versions cannot delete such folders. Unlike Del command, Shift+Del removes files permanently, they are not moved to Recycle Bin. No additional prompts are issued for files with read-only and system attributes.
- You can drag folders from folder tree panel and drop them to other programs or Desktop to copy or unpack them. Drag the archive icon in tree panel root to unpack the entire archive.
- "New folder" button in extraction dialog proposes a new folder name based on archive name instead of generic "New Folder".
- Command line RAR version information:
* if -iver switch is specified, RAR displays the version number and quits. You can run just "RAR -iver";
* "x86" or "x64" is displayed in Windows RAR version information both for -iver and in the copyright title for other commands.
- If -p switch is used without optional <pwd> parameter, a password can be also set with file redirection or pipe. For example: rar -p myarc.rar myfiles < psw.txt
- Command line RAR treats 'arcname.partN' as 'arcname.partN.rar' if 'arcname.partN' does not exist and 'arcname.part#.rar' exists. For example, it is allowed to run: RAR x arcname.part01 to start extraction from arcname.part01.rar
- Improvements in 7z archives support:
* "Solid" status is correctly detected and reported for 7z archives in WinRAR "Info" command;
* dictionary size is displayed for LZMA and LZMA2 7z archives in WinRAR "Info" command;
* unknown packed size for files inside of 7z solid block is denoted as '?' instead of '0' when browsing the archive contents in WinRAR.
- Maximum comment length for RAR archives is increased from 64 to 256 KB. Since SFX script commands are stored in archive comment, it allows a longer main and license text in SFX archives.
- Size of default WinRAR viewer font is scaled up properly in Windows high DPI mode.
- Minimum supported Windows version is Windows XP SP3 now. WinRAR will not run in Windows XP without service packs.
- "Settings/File list/Allow all uppercase names" option is removed. This option was intended to simplify transition from MS DOS to Windows and is not needed anymore.
# Bugs fixed:
- WinRAR 5.31 x64 "Compress and email" command did not work with Microsoft Outlook x64;
- if WinRAR 5.31 version for one of right to left languages was installed in Windows with English or other not right to left system language, WinRAR could change Windows Explorer layout to right to left;
- if archive was stored in a folder without "Write" permission and if archive contents was extracted with drag and drop to a writable folder, WinRAR issued an unnecessary privileges elevation prompt.

- Information about the critical vulnerability in WinRAR self-extracting archives published in news in September and October 2015 is incorrect. Unfortunately mass media failed to recognize that what was described as WinRAR vulnerability is Windows OLE vulnerability patched in November 2014: Even if unpatched, this Windows OLE vulnerability does not introduce new risk factors for WinRAR SFX archives. No patches for WinRAR are needed.
- Added extraction of multipart ZIP archives created by 7-Zip.
- Added extraction of files split to multiple parts with .001, .002, ..., extensions. You can open .001 file as a usual archive and then unpack its contents. WinRAR will combine all parts and save them to extracted file. All parts must be stored in the same folder before starting extraction. "001" item is included to "Associate WinRAR with" list in "Settings/Integration" dialog.
- WinRAR file list allows to use mouse Back and Forward buttons or Alt+Left and Alt+Right keyboard shortcuts to navigate in recently visited folders.
- Folder wildcards are allowed in RAR command line in file names to archive. For example: rar a backup c:ackup2015** will archive all '2015*' folders in c:ackup. Use -r switch to search for '2015*' also in c:ackup subfolders.
- "Extract" button in SFX archive is changed to "Pause" when extraction is started, so it is possible to pause SFX extraction and resume it later.
- "Skip encrypted" option in "Find files" dialog to silently skip encrypted archives while performing search command.
- Archive test command works for tar.gz, tar.bz2 and tar.xz archives. Since TAR format does not provide file data checksums, WinRAR checks only validity of GZIP, BZIP2 or XZ container.
- Adding a new string to WinRAR diagnostic messages window could be slow and affect the operation performance in case of thousands of errors. Now it works fast regardless of errors number.
- New 'R' object for -sc switch defines encoding of console RAR messages sent to redirected files and pipes. For example: rar lb -scur data > list.txt will produce Unicode list.txt with archived file names.
- Sleep time parameter in -ri<priority>[:<sleep_time>] switch is adjusted to lower its impact to RAR performance and especially to recovery record related operations. Higher sleep time values are needed to reduce the system load to same level as in previous versions.
- Console RAR "l" and "v" commands display file time in YYYY-MM-DD format.
- When extracting RAR and ZIP archives created in Unix, WinRAR maps decomposed Unicode characters to precomposed. Such conversion is required for some Unix and OS X archives to correctly unpack non-English archived names in Windows. It works for Windows versions starting from Windows Vista.
- Modification time is set for all folders created when unpacking.7z archives. Previous versions set it only for non-empty folders.
- WinRAR prevents a computer to go to sleep by inactivity timeout until current operation, such as archiving, extraction or another archive processing, is done.
- Total progress bar is displayed when extracting .arj, .lzh and .cab archives (except multivolume archives).
- Progress bar is displayed when deleting files after archiving and when clearing "Archive" attribute of archived files.
- "Test" command also verifies contents of NTFS alternate data streams in RAR 3.x - 5.x archives. Previously their contents was checked only during extraction command.
# Bugs fixed:
- console RAR crashed instead of displaying an overwrite prompt when attempting to add files to already existing volumes;
- console RAR "lt" command did not display seconds in file timestamp;
- WinRAR failed to decompress .xxe files if they did not include "section N of xxencode" string in the body;
- WinRAR could not restore contents of NTFS alternate data stream saved with -os switch if it was split between different volumes.

# Bugs fixed:
- "Print file" command did not work with HTML files in Windows 10;
- if relative path to report file was specified, "Generate report" command created a report file in WinRAR start folder instead of current WinRAR folder;
- in some cases text scaling in SFX archive main and license dialogs in high DPI mode did not work, so text size was smaller than expected;
- changes in broken archive processing to handle invalid ZIP, ARJ and ISO archives more reliably;
- RAR "l" and "v" list commands added unneeded spaces after file names shorter than 12 characters.

# Information about the critical vulnerability in WinRAR self-extracting archives recently published in news is incorrect. Unfortunately mass media failed to recognize that what was described as WinRAR vulnerability is Windows OLE vulnerability patched in November 2014: Even if unpatched, this Windows OLE vulnerability does not introduce new risk factors for WinRAR SFX archives.
# "Import/Export" commands:
- WinRAR performs the additional validation of Settings.reg contents for "Import settings from file" command to prevent importing Registry keys unrelated to WinRAR settings;
- WinRAR specifies the full path to regedit.exe tool to prevent running copies of "regedit" from other folders.
# Bugs fixed:
- If 'file' and 'file.exe' were present in the same folder and user double clicked on 'file', WinRAR could start 'file.exe' instead;
- "Generate report" command could create a report in wrong folder, not that with selected files;
- RAR could crash when unpacking .rar archives with corrupt file headers. Fixed now.

- It is allowed to specify environment variables in path to external viewer in WinRAR "Settings/Viewer" dialog.
- Folder wildcards behavior is changed, so command like: rar a backup c:ackup2015** will search for '2015*' folders only in c:ackup. Add -r switch if you wish to search also in all c:ackup subfolders.
- If wrong password is specified when extracting an encrypted file in RAR5 archive, WinRAR will not create folders contained in file path. Previous versions created file path folders even if file extraction failed because of wrong password.
# Bugs fixed:
- "Delete files after archiving" option of default compression profile was ignored in drag&drop operations in previous beta.

- WinRAR treats .txz archive extension as .tar.xz and opens .txz contents in a single step.
- If you drag a file from another application to WinRAR holding Shift button, a file will be deleted after archiving. Previous versions ignored Shift state here.
- WinRAR ignores "Turn PC off when done" option in case of read and write errors if user pressed Cancel in repeat read or repeat write dialogs.
# Bugs fixed:
- archive comment is displayed also in empty ZIP archives. Previous versions did not display it if ZIP archive did not contain any files;
- Explorer window containing a temporary folder with unpacked file could be opened when attempting to view an archived file in a corrupt ZIP archive. File entry in a corrupt ZIP could have a wrong "hard drive" icon.

# SFX module sets sfxstime environment variable, which contains the module start time in "YYYY-MM-DD-HH-MM-SS-ms" format. You can specify it in Path command if you need to generate a time based unique installation path, such as "Path=myapp-%sfxstime%".
# Fewer password requests in following cases in "Convert archives" command:
- if "Convert archives" is applied to archive with encrypted file names, which contents is currently displayed in WinRAR;
- if archive produced by "Convert archives" includes encrypted file names.
# Bugs fixed:
- RAR volumes renamed from standard .part1.rar, .part2.rar to .001, .002 are recognized and processed correctly now. Previous beta opened them as set of usual split files, not as RAR volumes;
- reports produced with "Generate report" command contained invalid CRC32 checksums for non-archived files;
- "rar x arcname.rar d:" command unpacks files to d: current folder. Previous version unpacked them to d: root folder;
- archive comment was not encrypted if added to archive with encrypted headers using "c" command without -hp switch. This beta encrypts an archive comment in such case.

- Added extraction of multipart ZIP archives created by 7-Zip.
- Added extraction of files split to multiple parts with .001,.002, ..., extensions. You can open .001 file as a usual archive and then unpack its contents.
- WinRAR file list allows to use mouse Back and Forward buttons or Alt+Left and Alt+Right keyboard shortcuts to navigate in recently visited folders.
- Folder wildcards are allowed in RAR command line in file names to archive.
- "Extract" button in SFX archive is changed to "Pause" when extraction is started, so it is possible to pause SFX extraction and resume it later.
- "Skip encrypted" option in "Find files" dialog to silently skip encrypted archives while performing search command.
- Archive test command works for tar.gz, tar.bz2 and tar.xz archives. Since TAR format does not provide file data checksums, WinRAR checks only validity of GZIP, BZIP2 or XZ container.
- Adding a new string to WinRAR diagnostic messages window could be slow and affect the operation performance in case of thousands of errors. Now it works fast regardless of errors number.
- New 'R' object for -sc switch defines encoding of console RAR messages sent to redirected files and pipes.
- Sleep time parameter in -ri<priority>[:<sleep_time>] switch is adjusted to lower its impact to RAR performance and especially to recovery record related operations. Higher sleep time values are needed to reduce the system load to same level as in previous versions.
- Console RAR "l" and "v" commands display file time in YYYY-MM-DD format.
- When extracting RAR and ZIP archives created in Unix, WinRAR maps decomposed Unicode characters to precomposed.
- Modification time is set for all folders created when unpacking .7z archives. Previous versions set it only for non-empty folders.
- WinRAR prevents a computer to go to sleep by inactivity timeout until current operation, such as archiving, extraction or another archive processing, is done.
- Total progress bar is displayed when extracting .arj, .lzh and .cab archives (except multivolume archives).
- Progress bar is displayed when deleting files after archiving and when clearing "Archive" attribute of archived files.
- "Test" command also verifies contents of NTFS alternate data streams in RAR 3.x - 5.x archives. Previously their contents was checked only during extraction command.
# Bugs fixed:
- console RAR crashed instead of displaying an overwrite prompt when attempting to add files to already existing volumes;
- console RAR "lt" command did not display seconds in file timestamp;
- WinRAR failed to decompress .xxe files if they did not include "section N of xxencode" string in the body;
- RAR could not restore contents of NTFS alternate data stream saved with -os switch if it was split between different volumes.