[EWS v2] Fix issue with files not opening

Packs/MicrosoftExchangeOnPremise/Integrations/EWSv2/EWSv2.py

@@ -1448,9 +1448,10 @@ def parse_attachment_as_dict(item_id, attachment):  # pragma: no cover
                 else ITEM_ATTACHMENT_TYPE
             }
 
-    except TypeError as e:
-        if str(e) != "must be string or buffer, not None":
+    except (TypeError, ErrorCannotOpenFileAttachment) as e:
+        if str(e) not in ("must be string or buffer, not None", "The attachment could not be opened."):
             raise
+        demisto.debug(f"Add attachment info to context, without the content. Error: {str(e)}")
         return {
             ATTACHMENT_ORIGINAL_ITEM_ID: item_id,
             ATTACHMENT_ID: attachment.attachment_id.id,

Packs/MicrosoftExchangeOnPremise/ReleaseNotes/2_1_21.md

@@ -0,0 +1,6 @@
+
+#### Integrations
+
+##### EWS v2
+
+Fixed an issue where *fetch-incidents* failed to create an incident when the API could not open the attachment. Such mails will now be created as incidents, without the referenced attachments.

Packs/MicrosoftExchangeOnPremise/pack_metadata.json

@@ -2,7 +2,7 @@
     "name": "Microsoft Exchange On-Premise",
     "description": "Exchange Web Services",
     "support": "xsoar",
-    "currentVersion": "2.1.20",
+    "currentVersion": "2.1.21",
     "author": "Cortex XSOAR",
     "url": "https://www.paloaltonetworks.com/cortex",
     "email": "",