diff --git a/docs/libcurl/opts/CURLOPT_HTTPAUTH.md b/docs/libcurl/opts/CURLOPT_HTTPAUTH.md
index e05c84183a..692178c72e 100644
--- a/docs/libcurl/opts/CURLOPT_HTTPAUTH.md
+++ b/docs/libcurl/opts/CURLOPT_HTTPAUTH.md
@@ -54,11 +54,8 @@ regular old-fashioned Basic method.
 
 ## CURLAUTH_DIGEST_IE
 
-HTTP Digest authentication with an IE flavor. Digest authentication is defined
-in RFC 2617 and is a more secure way to do authentication over public networks
-than the regular old-fashioned Basic method. The IE flavor means that
-libcurl uses a special "quirk" that IE is known to have used before version 7
-and that some servers require the client to use.
+The IE-specific Digest authentication behavior is no longer supported.
+This bit is kept for compatibility and is treated as CURLAUTH_DIGEST.
 
 ## CURLAUTH_BEARER
 
@@ -159,6 +156,8 @@ CURLAUTH_BEARER was added in 7.61.0
 
 CURLAUTH_AWS_SIGV4 was added in 7.74.0
 
+CURLAUTH_DIGEST_IE does nothing since 8.21.0
+
 # %AVAILABILITY%
 
 # RETURN VALUE
diff --git a/docs/libcurl/symbols-in-versions b/docs/libcurl/symbols-in-versions
index 0d775fa655..6516f7823d 100644
--- a/docs/libcurl/symbols-in-versions
+++ b/docs/libcurl/symbols-in-versions
@@ -205,7 +205,7 @@ CURLAUTH_AWS_SIGV4              7.75.0
 CURLAUTH_BASIC                  7.10.6
 CURLAUTH_BEARER                 7.61.0
 CURLAUTH_DIGEST                 7.10.6
-CURLAUTH_DIGEST_IE              7.19.3
+CURLAUTH_DIGEST_IE              7.19.3        8.21.0
 CURLAUTH_GSSAPI                 7.55.0
 CURLAUTH_GSSNEGOTIATE           7.10.6        7.38.0
 CURLAUTH_NEGOTIATE              7.38.0
diff --git a/lib/http_digest.c b/lib/http_digest.c
index 55e27052d9..e87fb362ed 100644
--- a/lib/http_digest.c
+++ b/lib/http_digest.c
@@ -68,8 +68,6 @@ CURLcode Curl_output_digest(struct Curl_easy *data,
                             const unsigned char *uripath)
 {
   CURLcode result;
-  unsigned char *path = NULL;
-  const char *tmp = NULL;
   char *response;
   size_t len;
   bool have_chlg;
@@ -125,36 +123,9 @@ CURLcode Curl_output_digest(struct Curl_easy *data,
     return CURLE_OK;
   }
 
-  /* IE browsers < v7 cut off the URI part at the query part when they
-     evaluate the MD5 and some (IIS?) servers work with them so we may need to
-     do the Digest IE-style. Note that the different ways cause different MD5
-     sums to get sent.
-
-     Apache servers can be set to do the Digest IE-style automatically using
-     the BrowserMatch feature:
-     https://httpd.apache.org/docs/2.2/mod/mod_auth_digest.html#msie
-
-     Further details on Digest implementation differences:
-     https://web.archive.org/web/2009/fngtps.com/2006/09/http-authentication
-  */
-
-  if(authp->iestyle) {
-    tmp = strchr((const char *)uripath, '?');
-    if(tmp) {
-      size_t urilen = tmp - (const char *)uripath;
-      /* typecast is fine here since the value is always less than 32 bits */
-      path = (unsigned char *)curl_maprintf("%.*s", (int)urilen, uripath);
-    }
-  }
-  if(!tmp)
-    path = (unsigned char *)curlx_strdup((const char *)uripath);
-
-  if(!path)
-    return CURLE_OUT_OF_MEMORY;
-
-  result = Curl_auth_create_digest_http_message(data, userp, passwdp, request,
-                                                path, digest, &response, &len);
-  curlx_free(path);
+  result = Curl_auth_create_digest_http_message(data, userp, passwdp,
+                                                request, uripath, digest,
+                                                &response, &len);
   if(result)
     return result;
 
diff --git a/lib/setopt.c b/lib/setopt.c
index f481614dc1..24d0c42bcf 100644
--- a/lib/setopt.c
+++ b/lib/setopt.c
@@ -240,17 +240,9 @@ static CURLcode httpauth(struct Curl_easy *data, bool proxy,
   if(auth != CURLAUTH_NONE) {
     int bitcheck = 0;
     bool authbits = FALSE;
-    /* the DIGEST_IE bit is only used to set a special marker, for all the
-       rest we need to handle it as normal DIGEST */
-    bool iestyle = !!(auth & CURLAUTH_DIGEST_IE);
-    if(proxy)
-      data->state.authproxy.iestyle = iestyle;
-    else
-      data->state.authhost.iestyle = iestyle;
-
     if(auth & CURLAUTH_DIGEST_IE) {
       auth |= CURLAUTH_DIGEST; /* set standard digest bit */
-      auth &= ~CURLAUTH_DIGEST_IE; /* unset ie digest bit */
+      auth &= ~CURLAUTH_DIGEST_IE; /* drop the legacy bit */
     }
 
     /* switch off bits we cannot support */
diff --git a/lib/urldata.h b/lib/urldata.h
index 7fff77c2b3..335e61c4a3 100644
--- a/lib/urldata.h
+++ b/lib/urldata.h
@@ -586,8 +586,6 @@ struct auth {
                  actual request */
   BIT(multipass); /* TRUE if this is not yet authenticated but within the
                      auth multipass negotiation */
-  BIT(iestyle); /* TRUE if digest should be done IE-style or FALSE if it
-                   should be RFC compliant */
 };
 
 #ifdef USE_NGHTTP2