diff --git a/chrome/content/zotero/elements/attachmentBox.js b/chrome/content/zotero/elements/attachmentBox.js
index adfe4cbbe6..126a135022 100644
--- a/chrome/content/zotero/elements/attachmentBox.js
+++ b/chrome/content/zotero/elements/attachmentBox.js
@@ -259,7 +259,7 @@
 			let indexStatusRow = this._id('indexStatusRow');
 			let selectButton = this._id('select-button');
 
-			let fileExists = await IOUtils.exists(this._item.getFilePath());
+			let fileExists = this._item.isFileAttachment() && await this._item.fileExists();
 			let isImportedURL = this.item.attachmentLinkMode == Zotero.Attachments.LINK_MODE_IMPORTED_URL;
 			let isLinkedURL = this.item.attachmentLinkMode == Zotero.Attachments.LINK_MODE_LINKED_URL;
 			
@@ -287,7 +287,7 @@
 			}
 			
 			// Access date
-			if (this.displayAccessed && isImportedURL) {
+			if (this.displayAccessed && (isImportedURL || isLinkedURL)) {
 				let itemAccessDate = this.item.getField('accessDate');
 				if (itemAccessDate) {
 					itemAccessDate = Zotero.Date.sqlToDate(itemAccessDate, true);
diff --git a/chrome/content/zotero/elements/attachmentPreview.js b/chrome/content/zotero/elements/attachmentPreview.js
index c8f2cc8d38..71a8360d2e 100644
--- a/chrome/content/zotero/elements/attachmentPreview.js
+++ b/chrome/content/zotero/elements/attachmentPreview.js
@@ -98,7 +98,7 @@
 		}
 
 		set item(val) {
-			this._item = (val instanceof Zotero.Item && val.isAttachment()) ? val : null;
+			this._item = (val instanceof Zotero.Item && val.isFileAttachment()) ? val : null;
 			if (this.isVisible) {
 				this.render();
 			}
@@ -200,7 +200,7 @@
 			}
 			this._renderingItemID = itemID;
 			let success = false;
-			if (this.isValidType && await IOUtils.exists(this._item.getFilePath())) {
+			if (this.isValidType && await this._item.fileExists()) {
 				if (this.isReaderType) {
 					success = await this._renderReader();
 				}