diff --git a/README.md b/README.md
index 38212943..50466ad7 100644
--- a/README.md
+++ b/README.md
@@ -359,7 +359,9 @@ You don't have to do anything manually!
 1. Online.net API (https://online.net/)
 1. MyDevil.net (https://www.mydevil.net/)
 1. Core-Networks.de (https://core-networks.de)
+1. NederHost API (https://www.nederhost.nl/)
 1. Zone.ee (zone.eu) API (https://api.zone.eu/v2)
+
 And:
 
 **lexicon DNS API: https://github.com/Neilpang/acme.sh/wiki/How-to-use-lexicon-dns-api
diff --git a/acme.sh b/acme.sh
index d81812fe..1887bc90 100755
--- a/acme.sh
+++ b/acme.sh
@@ -9,6 +9,9 @@ PROJECT_ENTRY="acme.sh"
 PROJECT="https://github.com/Neilpang/$PROJECT_NAME"
 
 DEFAULT_INSTALL_HOME="$HOME/.$PROJECT_NAME"
+
+_WINDOWS_SCHEDULER_NAME="$PROJECT_NAME.cron"
+
 _SCRIPT_="$0"
 
 _SUB_FOLDERS="dnsapi deploy"
@@ -19,8 +22,8 @@ LETSENCRYPT_STAGING_CA_V1="https://acme-staging.api.letsencrypt.org/directory"
 LETSENCRYPT_CA_V2="https://acme-v02.api.letsencrypt.org/directory"
 LETSENCRYPT_STAGING_CA_V2="https://acme-staging-v02.api.letsencrypt.org/directory"
 
-DEFAULT_CA=$LETSENCRYPT_CA_V1
-DEFAULT_STAGING_CA=$LETSENCRYPT_STAGING_CA_V1
+DEFAULT_CA=$LETSENCRYPT_CA_V2
+DEFAULT_STAGING_CA=$LETSENCRYPT_STAGING_CA_V2
 
 DEFAULT_USER_AGENT="$PROJECT_NAME/$VER ($PROJECT)"
 DEFAULT_ACCOUNT_EMAIL=""
@@ -1974,7 +1977,7 @@ _save_conf() {
   _sdkey="$2"
   _sdvalue="$3"
   _b64encode="$4"
-  if [ "$_b64encode" ]; then
+  if [ "$_sdvalue" ] && [ "$_b64encode" ]; then
     _sdvalue="${B64CONF_START}$(printf "%s" "${_sdvalue}" | _base64)${B64CONF_END}"
   fi
   if [ "$_s_c_f" ]; then
@@ -3665,8 +3668,12 @@ issue() {
     _cleardomainconf "Le_ChallengeAlias"
   fi
 
-  Le_API="$ACME_DIRECTORY"
-  _savedomainconf "Le_API" "$Le_API"
+  if [ "$ACME_DIRECTORY" != "$DEFAULT_CA" ]; then
+    Le_API="$ACME_DIRECTORY"
+    _savedomainconf "Le_API" "$Le_API"
+  else
+    _cleardomainconf Le_API
+  fi
 
   if [ "$_alt_domains" = "$NO_VALUE" ]; then
     _alt_domains=""
@@ -4500,6 +4507,16 @@ renew() {
 
   . "$DOMAIN_CONF"
   _debug Le_API "$Le_API"
+
+  if [ "$Le_API" = "$LETSENCRYPT_CA_V1" ]; then
+    _cleardomainconf Le_API
+    Le_API="$DEFAULT_CA"
+  fi
+  if [ "$Le_API" = "$LETSENCRYPT_STAGING_CA_V1" ]; then
+    _cleardomainconf Le_API
+    Le_API="$DEFAULT_STAGING_CA"
+  fi
+
   if [ "$Le_API" ]; then
     if [ "$_OLD_CA_HOST" = "$Le_API" ]; then
       export Le_API="$DEFAULT_CA"
@@ -4909,35 +4926,107 @@ _installcert() {
 
 }
 
+__read_password() {
+  unset _pp
+  prompt="Enter Password:"
+  while IFS= read -p "$prompt" -r -s -n 1 char; do
+    if [ "$char" = $'\0' ]; then
+      break
+    fi
+    prompt='*'
+    _pp="$_pp$char"
+  done
+  echo "$_pp"
+}
+
+_install_win_taskscheduler() {
+  _lesh="$1"
+  _centry="$2"
+  _randomminute="$3"
+  if ! _exists cygpath; then
+    _err "cygpath not found"
+    return 1
+  fi
+  if ! _exists schtasks; then
+    _err "schtasks.exe is not found, are you on Windows?"
+    return 1
+  fi
+  _winbash="$(cygpath -w $(which bash))"
+  _debug _winbash "$_winbash"
+  if [ -z "$_winbash" ]; then
+    _err "can not find bash path"
+    return 1
+  fi
+  _myname="$(whoami)"
+  _debug "_myname" "$_myname"
+  if [ -z "$_myname" ]; then
+    _err "can not find my user name"
+    return 1
+  fi
+  _debug "_lesh" "$_lesh"
+
+  _info "To install scheduler task in your Windows account, you must input your windows password."
+  _info "$PROJECT_NAME doesn't save your password."
+  _info "Please input your Windows password for: $(__green "$_myname")"
+  _password="$(__read_password)"
+  #SCHTASKS.exe '/create' '/SC' 'DAILY' '/TN' "$_WINDOWS_SCHEDULER_NAME" '/F' '/ST' "00:$_randomminute" '/RU' "$_myname" '/RP' "$_password" '/TR' "$_winbash -l -c '$_lesh --cron --home \"$LE_WORKING_DIR\" $_centry'" >/dev/null
+  echo SCHTASKS.exe '/create' '/SC' 'DAILY' '/TN' "$_WINDOWS_SCHEDULER_NAME" '/F' '/ST' "00:$_randomminute" '/RU' "$_myname" '/RP' "$_password" '/TR' "\"$_winbash -l -c '$_lesh --cron --home \"$LE_WORKING_DIR\" $_centry'\"" | cmd.exe >/dev/null
+  echo
+
+}
+
+_uninstall_win_taskscheduler() {
+  if ! _exists schtasks; then
+    _err "schtasks.exe is not found, are you on Windows?"
+    return 1
+  fi
+  if ! echo SCHTASKS /query /tn "$_WINDOWS_SCHEDULER_NAME" | cmd.exe >/dev/null; then
+    _debug "scheduler $_WINDOWS_SCHEDULER_NAME is not found."
+  else
+    _info "Removing $_WINDOWS_SCHEDULER_NAME"
+    echo SCHTASKS /delete /f /tn "$_WINDOWS_SCHEDULER_NAME" | cmd.exe >/dev/null
+  fi
+}
+
 #confighome
 installcronjob() {
   _c_home="$1"
   _initpath
   _CRONTAB="crontab"
+  if [ -f "$LE_WORKING_DIR/$PROJECT_ENTRY" ]; then
+    lesh="\"$LE_WORKING_DIR\"/$PROJECT_ENTRY"
+  else
+    _err "Can not install cronjob, $PROJECT_ENTRY not found."
+    return 1
+  fi
+  if [ "$_c_home" ]; then
+    _c_entry="--config-home \"$_c_home\" "
+  fi
+  _t=$(_time)
+  random_minute=$(_math $_t % 60)
+
   if ! _exists "$_CRONTAB" && _exists "fcrontab"; then
     _CRONTAB="fcrontab"
   fi
+
   if ! _exists "$_CRONTAB"; then
+    if _exists cygpath && _exists schtasks.exe; then
+      _info "It seems you are on Windows,  let's install Windows scheduler task."
+      if _install_win_taskscheduler "$lesh" "$_c_entry" "$random_minute"; then
+        _info "Install Windows scheduler task success."
+        return 0
+      else
+        _err "Install Windows scheduler task failed."
+        return 1
+      fi
+    fi
     _err "crontab/fcrontab doesn't exist, so, we can not install cron jobs."
     _err "All your certs will not be renewed automatically."
     _err "You must add your own cron job to call '$PROJECT_ENTRY --cron' everyday."
     return 1
   fi
-
   _info "Installing cron job"
   if ! $_CRONTAB -l | grep "$PROJECT_ENTRY --cron"; then
-    if [ -f "$LE_WORKING_DIR/$PROJECT_ENTRY" ]; then
-      lesh="\"$LE_WORKING_DIR\"/$PROJECT_ENTRY"
-    else
-      _err "Can not install cronjob, $PROJECT_ENTRY not found."
-      return 1
-    fi
-
-    if [ "$_c_home" ]; then
-      _c_entry="--config-home \"$_c_home\" "
-    fi
-    _t=$(_time)
-    random_minute=$(_math $_t % 60)
     if _exists uname && uname -a | grep SunOS >/dev/null; then
       $_CRONTAB -l | {
         cat
@@ -4965,6 +5054,16 @@ uninstallcronjob() {
   fi
 
   if ! _exists "$_CRONTAB"; then
+    if _exists cygpath && _exists schtasks.exe; then
+      _info "It seems you are on Windows,  let's uninstall Windows scheduler task."
+      if _uninstall_win_taskscheduler; then
+        _info "Uninstall Windows scheduler task success."
+        return 0
+      else
+        _err "Uninstall Windows scheduler task failed."
+        return 1
+      fi
+    fi
     return
   fi
   _info "Removing cron job"
@@ -5292,13 +5391,17 @@ _precheck() {
 
   if [ -z "$_nocron" ]; then
     if ! _exists "crontab" && ! _exists "fcrontab"; then
-      _err "It is recommended to install crontab first. try to install 'cron, crontab, crontabs or vixie-cron'."
-      _err "We need to set cron job to renew the certs automatically."
-      _err "Otherwise, your certs will not be able to be renewed automatically."
-      if [ -z "$FORCE" ]; then
-        _err "Please add '--force' and try install again to go without crontab."
-        _err "./$PROJECT_ENTRY --install --force"
-        return 1
+      if _exists cygpath && _exists schtasks.exe; then
+        _info "It seems you are on Windows,  we will install Windows scheduler task."
+      else
+        _err "It is recommended to install crontab first. try to install 'cron, crontab, crontabs or vixie-cron'."
+        _err "We need to set cron job to renew the certs automatically."
+        _err "Otherwise, your certs will not be able to be renewed automatically."
+        if [ -z "$FORCE" ]; then
+          _err "Please add '--force' and try install again to go without crontab."
+          _err "./$PROJECT_ENTRY --install --force"
+          return 1
+        fi
       fi
     fi
   fi
diff --git a/dnsapi/README.md b/dnsapi/README.md
index 5b3e2a08..de3148cf 100644
--- a/dnsapi/README.md
+++ b/dnsapi/README.md
@@ -1296,7 +1296,21 @@ acme.sh --issue --dns dns_cn -d example.com -d www.example.com
 
 The `CN_User` and `CN_Password` will be saved in `~/.acme.sh/account.conf` and will be reused when needed.
 
-## 68. Use Zone.ee DNS API
+## 68. Use NederHost API
+
+Create an API token in Mijn NederHost.
+
+Set your API key:
+```
+export NederHost_Key='xxx'
+```
+
+To issue a certificate run:
+```
+acme.sh --issue --dns dns_nederhost -d example.com -d *.example.com
+```
+
+## 69. Use Zone.ee DNS API
 
 First, you'll need to retrive your API key. Estonian insructions https://help.zone.eu/kb/zoneid-api-v2/
 
@@ -1312,7 +1326,6 @@ acme.sh --issue -d example.com -d www.example.com --dns dns_zone
 ```
 
 `ZONE_Username` and `ZONE_Key` will be saved in `~/.acme.sh/account.conf` and will be reused when needed.
-
 # Use custom API
 
 If your API is not supported yet, you can write your own DNS API.
diff --git a/dnsapi/dns_hostingde.sh b/dnsapi/dns_hostingde.sh
index 50aa142f..1819e639 100644
--- a/dnsapi/dns_hostingde.sh
+++ b/dnsapi/dns_hostingde.sh
@@ -28,6 +28,7 @@ dns_hostingde_rm() {
 
 _hostingde_apiKey() {
   HOSTINGDE_APIKEY="${HOSTINGDE_APIKEY:-$(_readaccountconf_mutable HOSTINGDE_APIKEY)}"
+  HOSTINGDE_ENDPOINT="${HOSTINGDE_ENDPOINT:-$(_readaccountconf_mutable HOSTINGDE_ENDPOINT)}"
   if [ -z "$HOSTINGDE_APIKEY" ] || [ -z "$HOSTINGDE_ENDPOINT" ]; then
     HOSTINGDE_APIKEY=""
     HOSTINGDE_ENDPOINT=""
diff --git a/dnsapi/dns_nederhost.sh b/dnsapi/dns_nederhost.sh
new file mode 100755
index 00000000..0954ab65
--- /dev/null
+++ b/dnsapi/dns_nederhost.sh
@@ -0,0 +1,131 @@
+#!/usr/bin/env sh
+
+#NederHost_Key="sdfgikogfdfghjklkjhgfcdcfghjk"
+
+NederHost_Api="https://api.nederhost.nl/dns/v1"
+
+########  Public functions #####################
+
+#Usage: add  _acme-challenge.www.domain.com   "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
+dns_nederhost_add() {
+  fulldomain=$1
+  txtvalue=$2
+
+  NederHost_Key="${NederHost_Key:-$(_readaccountconf_mutable NederHost_Key)}"
+  if [ -z "$NederHost_Key" ]; then
+    NederHost_Key=""
+    _err "You didn't specify a NederHost api key."
+    _err "You can get yours from https://www.nederhost.nl/mijn_nederhost"
+    return 1
+  fi
+
+  #save the api key and email to the account conf file.
+  _saveaccountconf_mutable NederHost_Key "$NederHost_Key"
+
+  _debug "First detect the root zone"
+  if ! _get_root "$fulldomain"; then
+    _err "invalid domain"
+    return 1
+  fi
+  _debug _sub_domain "$_sub_domain"
+  _debug _domain "$_domain"
+
+  _info "Adding record"
+  if _nederhost_rest PATCH "zones/$_domain/records/$fulldomain/TXT" "[{\"content\":\"$txtvalue\",\"ttl\":60}]"; then
+    if _contains "$response" "$fulldomain"; then
+      _info "Added, OK"
+      return 0
+    else
+      _err "Add txt record error."
+      return 1
+    fi
+  fi
+  _err "Add txt record error."
+  return 1
+
+}
+
+#fulldomain txtvalue
+dns_nederhost_rm() {
+  fulldomain=$1
+  txtvalue=$2
+
+  NederHost_Key="${NederHost_Key:-$(_readaccountconf_mutable NederHost_Key)}"
+  if [ -z "$NederHost_Key" ]; then
+    NederHost_Key=""
+    _err "You didn't specify a NederHost api key."
+    _err "You can get yours from https://www.nederhost.nl/mijn_nederhost"
+    return 1
+  fi
+
+  _debug "First detect the root zone"
+  if ! _get_root "$fulldomain"; then
+    _err "invalid domain"
+    return 1
+  fi
+
+  _debug _sub_domain "$_sub_domain"
+  _debug _domain "$_domain"
+
+  _debug "Removing txt record"
+  _nederhost_rest DELETE "zones/${_domain}/records/$fulldomain/TXT?content=$txtvalue"
+
+}
+
+####################  Private functions below ##################################
+#_acme-challenge.www.domain.com
+#returns
+# _sub_domain=_acme-challenge.www
+# _domain=domain.com
+_get_root() {
+  domain=$1
+  i=2
+  p=1
+  while true; do
+    _domain=$(printf "%s" "$domain" | cut -d . -f $i-100)
+    _sub_domain=$(printf "%s" "$domain" | cut -d . -f 1-$p)
+    _debug _domain "$_domain"
+    if [ -z "$_domain" ]; then
+      #not valid
+      return 1
+    fi
+
+    if _nederhost_rest GET "zones/${_domain}"; then
+      if [ "${_code}" = "204" ]; then
+        return 0
+      fi
+    else
+      return 1
+    fi
+    p=$i
+    i=$(_math "$i" + 1)
+  done
+  return 1
+}
+
+_nederhost_rest() {
+  m=$1
+  ep="$2"
+  data="$3"
+  _debug "$ep"
+
+  export _H1="Authorization: Bearer $NederHost_Key"
+  export _H2="Content-Type: application/json"
+
+  if [ "$m" != "GET" ]; then
+    _debug data "$data"
+    response="$(_post "$data" "$NederHost_Api/$ep" "" "$m")"
+  else
+    response="$(_get "$NederHost_Api/$ep")"
+  fi
+
+  _code="$(grep "^HTTP" "$HTTP_HEADER" | _tail_n 1 | cut -d " " -f 2 | tr -d "\\r\\n")"
+  _debug "http response code $_code"
+
+  if [ "$?" != "0" ]; then
+    _err "error $ep"
+    return 1
+  fi
+  _debug2 response "$response"
+  return 0
+}