diff --git a/docs/atl/reference/atl-http-utility-functions.md b/docs/atl/reference/atl-http-utility-functions.md
index 3ca6645867..1ea9cbb95b 100644
--- a/docs/atl/reference/atl-http-utility-functions.md
+++ b/docs/atl/reference/atl-http-utility-functions.md
@@ -273,7 +273,7 @@ inline void SystemTimeToHttpDate(
 The system time to be obtained as an HTTP format string.
 
 *strTime*<br/>
-A reference to a string variable to receive the HTTP date time as defined in RFC 2616 ([http://www.ietf.org/rfc/rfc2616.txt](http://www.ietf.org/rfc/rfc2616.txt)) and RFC 1123 ([http://www.ietf.org/rfc/rfc1123.txt](http://www.ietf.org/rfc/rfc1123.txt)).
+A reference to a string variable to receive the HTTP date time as defined in RFC 2616 ([https://www.ietf.org/rfc/rfc2616.txt](https://www.ietf.org/rfc/rfc2616.txt)) and RFC 1123 ([https://www.ietf.org/rfc/rfc1123.txt](https://www.ietf.org/rfc/rfc1123.txt)).
 
 ## See also
 
diff --git a/docs/atl/reference/atl-text-encoding-functions.md b/docs/atl/reference/atl-text-encoding-functions.md
index 95e98e97cf..6861869e01 100644
--- a/docs/atl/reference/atl-text-encoding-functions.md
+++ b/docs/atl/reference/atl-text-encoding-functions.md
@@ -267,7 +267,7 @@ Returns TRUE on success, FALSE on failure.
 
 ### Remarks
 
-The "B" encoding scheme is described in RFC 2047 ([http://www.ietf.org/rfc/rfc2047.txt](http://www.ietf.org/rfc/rfc2047.txt)).
+The "B" encoding scheme is described in RFC 2047 ([https://www.ietf.org/rfc/rfc2047.txt](https://www.ietf.org/rfc/rfc2047.txt)).
 
 ## <a name="bencodegetrequiredlength"></a> BEncodeGetRequiredLength
 
@@ -291,7 +291,7 @@ The number of characters required for a buffer that could hold encoded data of *
 
 ### Remarks
 
-The "B" encoding scheme is described in RFC 2047 ([http://www.ietf.org/rfc/rfc2047.txt](http://www.ietf.org/rfc/rfc2047.txt)).
+The "B" encoding scheme is described in RFC 2047 ([https://www.ietf.org/rfc/rfc2047.txt](https://www.ietf.org/rfc/rfc2047.txt)).
 
 ## <a name="escapexml"></a> EscapeXML
 
@@ -419,7 +419,7 @@ Returns TRUE on success, FALSE on failure.
 
 ### Remarks
 
-The "Q" encoding scheme is described in RFC 2047 ([http://www.ietf.org/rfc/rfc2047.txt](http://www.ietf.org/rfc/rfc2047.txt)).
+The "Q" encoding scheme is described in RFC 2047 ([https://www.ietf.org/rfc/rfc2047.txt](https://www.ietf.org/rfc/rfc2047.txt)).
 
 ## <a name="qencodegetrequiredlength"></a> QEncodeGetRequiredLength
 
@@ -443,7 +443,7 @@ The number of characters required for a buffer that could hold encoded data of *
 
 ### Remarks
 
-The "Q" encoding scheme is described in RFC 2047 ([http://www.ietf.org/rfc/rfc2047.txt](http://www.ietf.org/rfc/rfc2047.txt)).
+The "Q" encoding scheme is described in RFC 2047 ([https://www.ietf.org/rfc/rfc2047.txt](https://www.ietf.org/rfc/rfc2047.txt)).
 
 ## <a name="qpdecode"></a> QPDecode
 
@@ -481,7 +481,7 @@ Returns TRUE on success, FALSE on failure.
 
 ### Remarks
 
-The quoted-printable encoding scheme is described in RFC 2045 ([http://www.ietf.org/rfc/rfc2045.txt](http://www.ietf.org/rfc/rfc2045.txt)).
+The quoted-printable encoding scheme is described in RFC 2045 ([https://www.ietf.org/rfc/rfc2045.txt](https://www.ietf.org/rfc/rfc2045.txt)).
 
 ## <a name="qpdecodegetrequiredlength"></a> QPDecodeGetRequiredLength
 
@@ -502,7 +502,7 @@ The number of bytes required for a buffer that could hold a decoded string of *n
 
 ### Remarks
 
-The quoted-printable encoding scheme is described in RFC 2045 ([http://www.ietf.org/rfc/rfc2045.txt](http://www.ietf.org/rfc/rfc2045.txt)).
+The quoted-printable encoding scheme is described in RFC 2045 ([https://www.ietf.org/rfc/rfc2045.txt](https://www.ietf.org/rfc/rfc2045.txt)).
 
 ## <a name="qpencode"></a> QPEncode
 
@@ -538,7 +538,7 @@ ATLSMTP_QPENCODE flags describing how the conversion is to be performed.
 
 - ATLSMTP_QPENCODE_TRAILING_SOFT Appends `=\r\n` to the encoded string.
 
-The quoted-printable encoding scheme is described in [RFC 2045](http://www.ietf.org/rfc/rfc2045.txt).
+The quoted-printable encoding scheme is described in [RFC 2045](https://www.ietf.org/rfc/rfc2045.txt).
 
 ### Return Value
 
@@ -546,7 +546,7 @@ Returns TRUE on success, FALSE on failure.
 
 ### Remarks
 
-The quoted-printable encoding scheme is described in RFC 2045 ([http://www.ietf.org/rfc/rfc2045.txt](http://www.ietf.org/rfc/rfc2045.txt)).
+The quoted-printable encoding scheme is described in RFC 2045 ([https://www.ietf.org/rfc/rfc2045.txt](https://www.ietf.org/rfc/rfc2045.txt)).
 
 ## <a name="qpencodegetrequiredlength"></a> QPEncodeGetRequiredLength
 
@@ -567,7 +567,7 @@ The number of characters required for a buffer that could hold encoded data of *
 
 ### Remarks
 
-The quoted-printable encoding scheme is described in RFC 2045 ([http://www.ietf.org/rfc/rfc2045.txt](http://www.ietf.org/rfc/rfc2045.txt)).
+The quoted-printable encoding scheme is described in RFC 2045 ([https://www.ietf.org/rfc/rfc2045.txt](https://www.ietf.org/rfc/rfc2045.txt)).
 
 ## <a name="uudecode"></a> UUDecode