diff --git a/src/components/metadata-editor.vue b/src/components/metadata-editor.vue
index 9e0cfd89f..4ab3721f5 100644
--- a/src/components/metadata-editor.vue
+++ b/src/components/metadata-editor.vue
@@ -105,6 +105,7 @@
                                         changeUuid.length === 0 ||
                                         checkingUuid ||
                                         processingRename ||
+                                        error ||
                                         warning === 'rename'
                                     "
                                 >
@@ -225,7 +226,7 @@
                                 >
                                     <span
                                         class="align-middle inline-block mr-1 fill-current"
-                                        :class="{ 'sm:ml-28': warning === 'rename' }"
+                                        :class="{ 'sm:ml-24': renameMode }"
                                     >
                                         <svg
                                             clip-rule="evenodd"
@@ -650,7 +651,7 @@ export default class MetadataEditorV extends Vue {
     loadingIntoEditor = false;
     loadEditor = false;
     error = false; // whether an error has occurred
-    warning: 'none' | 'uuid' | 'rename' | 'blank' | 'uuidNotFound' = 'none'; // used for duplicate uuid warning
+    warning: 'none' | 'uuid' | 'rename' | 'blank' | 'badChar' | 'uuidNotFound' = 'none'; // used for duplicate uuid warning
     configLang = 'en';
     currLang = 'en'; // page language
     showDropdown = false;
@@ -736,7 +737,7 @@ export default class MetadataEditorV extends Vue {
     };
     slides: MultiLanguageSlide[] = [];
     sourceCounts: SourceCounts = {};
-    sessionExpired = false;
+    sessionExpired: boolean = false;
     totalTime = import.meta.env.VITE_APP_CURR_ENV ? Number(import.meta.env.VITE_SESSION_END) : 30;
 
     mounted(): void {
@@ -2176,6 +2177,19 @@ export default class MetadataEditorV extends Vue {
         if (rename || !this.loadExisting) this.checkingUuid = true;
 
         if (!this.loadExisting || rename) {
+            // All reserved characters in URLs. The user can't use these for their UUID
+            const illegalChars = [':', '/', '#', '?', '&', '@', '%', '+'];
+            const illegalCharsContained = illegalChars.filter((badChar) =>
+                (rename ? this.changeUuid : this.uuid).includes(badChar)
+            );
+
+            if (illegalCharsContained.length) {
+                this.error = true;
+                this.warning = 'badChar';
+                this.checkingUuid = false;
+                return;
+            }
+
             if (!rename && !this.uuid) {
                 if (!this.loadExisting) {
                     this.error = true;
diff --git a/src/lang/lang.csv b/src/lang/lang.csv
index 15cb0d07a..d17979976 100644
--- a/src/lang/lang.csv
+++ b/src/lang/lang.csv
@@ -105,6 +105,7 @@ editor.metadata.newUuidInstructions,"Enter a unique ID for your new storyline. O
 editor.warning.rename,UUID already in use. Please choose a different ID.,1,UUID déjà utilisé. Veuillez choisir un autre identifiant.,0
 editor.warning.blank,UUID field cannot be blank. Please enter a unique UUID.,1,Le champ UUID ne peut pas être vide. Veuillez saisir un UUID unique.,0
 editor.warning.renameFailed,Failed to rename product.,1,Échec du renommage du produit.,0
+editor.warning.badChar,"Illegal character entered. You cannot use these characters in your UUID: {': / # ? & @ % +'}",1,"Caractère illégal saisi. Vous ne pouvez pas utiliser ces caractères dans votre UUID: {': / # ? & @ % +'}",0
 editor.changeUuid,Click here to change UUID,1,Cliquez ici pour changer,0
 editor.title,Title,1,Titre,1
 editor.respectTitle,RAMP Storylines Editor & Creation Tool,1,Éditeur et outil de création de scénarios RAMP,0