diff --git a/mailnews/addrbook/src/nsAddbookProtocolHandler.cpp b/mailnews/addrbook/src/nsAddbookProtocolHandler.cpp
index 64de7ab07c..3222942681 100644
--- a/mailnews/addrbook/src/nsAddbookProtocolHandler.cpp
+++ b/mailnews/addrbook/src/nsAddbookProtocolHandler.cpp
@@ -50,7 +50,7 @@ NS_IMETHODIMP nsAddbookProtocolHandler::GetDefaultPort(int32_t *aDefaultPort)
 
 NS_IMETHODIMP nsAddbookProtocolHandler::GetProtocolFlags(uint32_t *aUritype)
 {
-  *aUritype = URI_STD | URI_LOADABLE_BY_ANYONE | URI_FORBIDS_COOKIE_ACCESS;
+  *aUritype = URI_STD | URI_LOADABLE_BY_ANYONE;
   return NS_OK;
 }
 
diff --git a/mailnews/compose/src/nsSmtpService.cpp b/mailnews/compose/src/nsSmtpService.cpp
index 2f35a12792..ca1eee4845 100644
--- a/mailnews/compose/src/nsSmtpService.cpp
+++ b/mailnews/compose/src/nsSmtpService.cpp
@@ -284,8 +284,7 @@ nsSmtpService::AllowPort(int32_t port, const char *scheme, bool *_retval)
 NS_IMETHODIMP nsSmtpService::GetProtocolFlags(uint32_t *result)
 {
     *result = URI_NORELATIVE | ALLOWS_PROXY | URI_LOADABLE_BY_ANYONE |
-      URI_NON_PERSISTABLE | URI_DOES_NOT_RETURN_DATA |
-      URI_FORBIDS_COOKIE_ACCESS;
+      URI_NON_PERSISTABLE | URI_DOES_NOT_RETURN_DATA;
     return NS_OK;
 }
 
diff --git a/mailnews/imap/src/nsImapService.cpp b/mailnews/imap/src/nsImapService.cpp
index da09460310..23d4ed5135 100644
--- a/mailnews/imap/src/nsImapService.cpp
+++ b/mailnews/imap/src/nsImapService.cpp
@@ -2451,7 +2451,7 @@ NS_IMETHODIMP nsImapService::GetDefaultPort(int32_t *aDefaultPort)
 NS_IMETHODIMP nsImapService::GetProtocolFlags(uint32_t *result)
 {
   *result = URI_NORELATIVE | URI_FORBIDS_AUTOMATIC_DOCUMENT_REPLACEMENT |
-    URI_DANGEROUS_TO_LOAD | ALLOWS_PROXY | URI_FORBIDS_COOKIE_ACCESS
+    URI_DANGEROUS_TO_LOAD | ALLOWS_PROXY
 #ifdef IS_ORIGIN_IS_FULL_SPEC_DEFINED
     | ORIGIN_IS_FULL_SPEC
 #endif
diff --git a/mailnews/imap/test/unit/test_imapProtocols.js b/mailnews/imap/test/unit/test_imapProtocols.js
index e376192c77..a8b69fe9cc 100644
--- a/mailnews/imap/test/unit/test_imapProtocols.js
+++ b/mailnews/imap/test/unit/test_imapProtocols.js
@@ -8,7 +8,6 @@ var defaultProtocolFlags =
   Ci.nsIProtocolHandler.URI_FORBIDS_AUTOMATIC_DOCUMENT_REPLACEMENT |
   Ci.nsIProtocolHandler.URI_DANGEROUS_TO_LOAD |
   Ci.nsIProtocolHandler.ALLOWS_PROXY |
-  Ci.nsIProtocolHandler.URI_FORBIDS_COOKIE_ACCESS |
   Ci.nsIProtocolHandler.ORIGIN_IS_FULL_SPEC;
 
 var protocols =
diff --git a/mailnews/local/src/nsMailboxService.cpp b/mailnews/local/src/nsMailboxService.cpp
index 36c377dd44..bb0761372c 100644
--- a/mailnews/local/src/nsMailboxService.cpp
+++ b/mailnews/local/src/nsMailboxService.cpp
@@ -539,7 +539,7 @@ NS_IMETHODIMP nsMailboxService::GetProtocolFlags(uint32_t *result)
 {
   NS_ENSURE_ARG_POINTER(result);
   *result = URI_NORELATIVE | URI_FORBIDS_AUTOMATIC_DOCUMENT_REPLACEMENT |
-            URI_DANGEROUS_TO_LOAD | URI_FORBIDS_COOKIE_ACCESS
+            URI_DANGEROUS_TO_LOAD
 #ifdef IS_ORIGIN_IS_FULL_SPEC_DEFINED
             | ORIGIN_IS_FULL_SPEC
 #endif
diff --git a/mailnews/local/src/nsPop3Service.cpp b/mailnews/local/src/nsPop3Service.cpp
index 9b30ca0753..e47efb8b08 100644
--- a/mailnews/local/src/nsPop3Service.cpp
+++ b/mailnews/local/src/nsPop3Service.cpp
@@ -304,8 +304,7 @@ NS_IMETHODIMP nsPop3Service::GetDefaultDoBiff(bool *aDoBiff)
 NS_IMETHODIMP nsPop3Service::GetProtocolFlags(uint32_t *result)
 {
     NS_ENSURE_ARG_POINTER(result);
-    *result = URI_NORELATIVE | URI_DANGEROUS_TO_LOAD | ALLOWS_PROXY |
-              URI_FORBIDS_COOKIE_ACCESS;
+    *result = URI_NORELATIVE | URI_DANGEROUS_TO_LOAD | ALLOWS_PROXY;
     return NS_OK;
 }
 
diff --git a/mailnews/local/test/unit/test_mailboxProtocol.js b/mailnews/local/test/unit/test_mailboxProtocol.js
index e976c55e4f..4e6208ab40 100644
--- a/mailnews/local/test/unit/test_mailboxProtocol.js
+++ b/mailnews/local/test/unit/test_mailboxProtocol.js
@@ -7,7 +7,6 @@ var defaultProtocolFlags =
   Ci.nsIProtocolHandler.URI_NORELATIVE |
   Ci.nsIProtocolHandler.URI_DANGEROUS_TO_LOAD |
   Ci.nsIProtocolHandler.URI_FORBIDS_AUTOMATIC_DOCUMENT_REPLACEMENT |
-  Ci.nsIProtocolHandler.URI_FORBIDS_COOKIE_ACCESS |
   Ci.nsIProtocolHandler.ORIGIN_IS_FULL_SPEC;
 
 var protocols = [{
diff --git a/mailnews/news/src/nsNntpService.cpp b/mailnews/news/src/nsNntpService.cpp
index e48bd5e515..fd16a7a8e6 100644
--- a/mailnews/news/src/nsNntpService.cpp
+++ b/mailnews/news/src/nsNntpService.cpp
@@ -1190,7 +1190,7 @@ NS_IMETHODIMP nsNntpService::GetProtocolFlags(uint32_t *aUritype)
 {
     NS_ENSURE_ARG_POINTER(aUritype);
     *aUritype = URI_NORELATIVE | URI_FORBIDS_AUTOMATIC_DOCUMENT_REPLACEMENT |
-      URI_LOADABLE_BY_ANYONE | ALLOWS_PROXY | URI_FORBIDS_COOKIE_ACCESS
+      URI_LOADABLE_BY_ANYONE | ALLOWS_PROXY
 #ifdef IS_ORIGIN_IS_FULL_SPEC_DEFINED
       | ORIGIN_IS_FULL_SPEC
 #endif
diff --git a/mailnews/news/test/unit/test_nntpProtocols.js b/mailnews/news/test/unit/test_nntpProtocols.js
index f064839970..53355b7a5c 100644
--- a/mailnews/news/test/unit/test_nntpProtocols.js
+++ b/mailnews/news/test/unit/test_nntpProtocols.js
@@ -8,7 +8,6 @@ var defaultProtocolFlags =
   Ci.nsIProtocolHandler.URI_LOADABLE_BY_ANYONE |
   Ci.nsIProtocolHandler.ALLOWS_PROXY |
   Ci.nsIProtocolHandler.URI_FORBIDS_AUTOMATIC_DOCUMENT_REPLACEMENT |
-  Ci.nsIProtocolHandler.URI_FORBIDS_COOKIE_ACCESS |
   Ci.nsIProtocolHandler.ORIGIN_IS_FULL_SPEC;
 
 var protocols = [{