// Status=edited

For 64-bit Windows 10 and later: Download and execute the package file
{win64}. Install _WSJT-X_ into its own directory, for example
`C:\WSJTX` or `C:\WSJT\WSJTX`, rather than the conventional location +
`C:\Program Files ...\WSJTX`. All program files relating to _WSJT-X_
will be stored in the chosen installation directory and its
subdirectories. Logs and other writeable files are normally found in
the directory +
`C:\Users\<username>\AppData\Local\WSJT-X`.

TIP: Your computer may be configured so that this directory is
     "`invisible`".  It's there, however, and accessible.  An
     alternative (shortcut) directory name is
     `"%LocalAppData%\WSJT-X\"`.

* The built-in Windows facility for time synchronization may 
  not be adequate.  We recommend the program _Meinberg NTP Client_: see
  {ntpsetup} for downloading and installation instructions. Recent
  versions of Windows are now shipped with a more capable Internet
  time synchronization service that is suitable if configured
  appropriately. We do not recommend SNTP time setting tools or others
  that make periodic correction steps; _WSJT-X_ requires that the PC
  clock be monotonically increasing and smoothly continuous.

NOTE: Having a PC clock that appears to be synchronized to UTC is not
      sufficient.  "`Monotonically increasing`" means that the clock
      must not be stepped backwards. "`Smoothly continuous`" means
      that time must increase at a nearly constant rate, without
      steps.  Any necessary clock corrections must be applied by
      adjusting the rate of increase, thereby correcting
      synchronization errors gradually.

[[OPENSSL]]

* _WSJT-X_ uses the _OpenSSL_ libraries for TLS network connections.
Current _WSJT-X_ Windows installers include the required _OpenSSL_
runtime DLLs. If they are missing or cannot be loaded, you may see the
following error message when using features such as _SuperFox_
verification, *Update Hamlib*, _LoTW_ downloads, or _eQSL_ uploads.

image::LoTW_TLS_error.png[align="center",alt="SSL/TLS"]

If you installed _WSJT-X_ from the official Windows installer, first
try updating to the latest installer package. Reinstalling the same
package may help if files in the local installation were removed or
damaged. The _OpenSSL_ DLLs must match the Qt libraries used to build
the program and are normally installed with _WSJT-X_, so installing
unrelated system-wide _OpenSSL_ DLLs is not the recommended fix.

TIP: If you cannot update or reinstall _WSJT-X_, or do not have an
     Internet connection on the computer used to run
     _WSJT-X_ {VERSION_MAJOR}.{VERSION_MINOR}, you can download
     the _LoTW_ file manually. Go to
     https://lotw.arrl.org/lotw-user-activity.csv in a web browser,
     download the file, then move it to the _WSJT-X_ log files
     directory. This directory can be opened by selecting
     *File|Open log directory* from the main menu.

* _WSJT-X_ expects your sound card to do its raw sampling at 48000 Hz.
  To ensure that this will be so when running under recent versions of
  Windows, open the system's *Sound* control panel and select in turn
  the *Recording* and *Playback* tabs. Click *Properties*, then
  *Advanced*, and select *16 bit, 48000 Hz (DVD Quality)*. Switch off
  all audio enhancement features for these devices.

* You can uninstall _WSJT-X_ by clicking its *Uninstall* link in the
Windows *Start* menu, or by using *Uninstall a Program* on the
*Windows Control Panel | Programs and Features* option or in
*File | Settings | Apps*.
