How to Delete a Composing Email Attachment via Outlook Add-in?
Context: Server: Exchange Server 2019 on premise Client: OWA Category: Outlook Add-in Office JS API Set: Supported up to 1.5 only Problem Details: Delete an attachment added manually or through EWS API to an email item. Limitations: 1. Limitation of makeEWSRequestAsync() Office JS method: The makeEWSRequestAsync method in Office.js does not support the DeleteAttachment SOAP operation, which is required from outlook add in. -> Attempted Workaround - Using fetch with EWS SOAP Request: I tried invoking the DeleteAttachment operation via a fetch call to the EWS endpoint. However, EWS response states "requested web method is not allowed for this application". 2. OWA Limitation: As OWA in this environment only supports Office.js up to version 1.5, the modern attachment Office JS APIs and Graph APIs are not an option. Question: In an Exchange On-Premises scenario, how can I programmatically delete attachments via my add-in? Specifically, is there a recommended approach to obtain a valid token for EWS requests, or any supported alternative to perform DeleteAttachment? Any way to convert EWS attachment ID to Office JS attachment UUID? Additional Notes: I am aware that Exchange Online supports more modern APIs (Graph/REST), but my current deployment is strictly Exchange On-Premises. The add-in works well for reading attachments and other operations, except for deletion. Any guidance or recommendations would be highly appreciated! Thank you in advance.
Why signatures disappear in OWA
Hi, We have problem with disappearing signatures in OWA. Signatures in OWA worked without problem till last week. But today, users that have BB licences and use only OWA loosing their signatures. It repeats every 1-2 days. Have anybody experience with this problem? Can you give me advice, how to solved it? Thanks.
Exchange Server 2019 OWA web app when open calendar keep direct login page
After migrate all mailbox from Exchange 2013 to 2019, Outlook client / mobile app working fine. However when open OWA web app then go Calendar, may be wait for few second or click on any event, it will reload to login page. I can't see any error from event log or inetpub\logs\LogFiles. If owa IP address point back to Exchange 2013, web app calendar work again. I tired add HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa\MSV1_0\BackConnectionHostNames with exch2019.domain.local, domain.local and autodiscover.domain.local didn't help. The exchange server only allow access internally or by vpn connection. Any idea about this? Thanks
Exchange 2019 - Outlook/OWA all messages show the same time 8:02PM
Ok this one has me really puzzled. For some reason, which started randomly (since Feb 2023) the display time in Outlook, OWA and Phones (default app or outlook) have randomly been showing all emails as being received at 8:02PM and sometimes the next day at that time, on every message, could be ones that were sent at 11:02 am, could be ones sent at 2:22pm etc. And seems to have been some but not all users, but now more and more users are affected. All time zone and time syncs are correct. Headers shows the correct time and time zone on the messages. Messagetracking shows correct times as well. I was on Exch 2019, CU12, Nov22SU but did update to the Feb23SU(and all WU) and issue returned. It seems a reboot does fix it for a while. (Did the updates about 5-6 days ago, started again today) No major errors in event viewer other than the following, and that my SSL cert is expiring (in may) MSExchange Front End HTTP Proxy - 1003 [GetActiveCopiesForDatabaseAvailabilityGroup.FindAnotherServerLocatorServer: Server locator number of failovers since 2/22/2023 12:02:42 AM is already 25. No more failover attempts are allowed.] An internal server error occurred. The unhandled exception was: %2 but do not have a DAG The only other odd thing that I see is for some reason there is about 6 Microsoft Exchange certs (4 expire 2023, 2 expire 2026) and I believe there should only be one of those if I look at other setupsExchange 2013 The certificate key algorithm is not supported
Hello, We have an Exchange 2013 server, updated to CU23, which worked fine until one day, it showed the error on OWA "The certificate key algorithm is not supported"! I tried to put back an older valid certificate, reactivate all ciphers and TLS, updated to latest Microsoft patches, this error still comes back and I cannot manage the server anymore! Anyone has a clue how to resolve this issue?Outlook Web App (OWA) On-Premise without cloud integration
What needs to be done to operate Outlook Web App (OWA) On-Premise without cloud integration? It seems some people have asked this question for years but never got an answer. Examples: https://social.msdn.microsoft.com/Forums/ie/en-US/bcfb19d0-c8df-447c-a9a2-3b2bca8fcb4c/exchange2016-using-owa-internally-request-for-7-js-files-from-appsforofficemicrosoftcom?forum=exchangesvrdevelopment https://social.technet.microsoft.com/Forums/security/he-IL/06f5564d-bcb8-4b33-bcc8-da64fd8ccc79/content-security-policy-disable-access-to-appsforofficemicrosoftcom-in-outlook-web-app?forum=exchangesvrdevelopment When I use OWA On-Premise Microsoft Edge reports errors on the developer console (Hotkey [F12]): "Refused to load the stylesheet 'https://appsforoffice.microsoft.com/lib/1/hosted/office.js' because it violates the following Content Security Policy directive: "default-src 'self' data: 'unsafe-inline'". Note that 'style-src-elem' was not explicitly set, so 'default-src' is used as a fallback.Turn off add-in OWA
Hi there, I can't find any settings in the new add-in admin center to turn off/disable an add-in for OWA for the tenant. Does anyone have instructions for disabling an add-in for users in OWA on a tenant - for instance I would like to block the S4B add-in in OAW and don't see the option in the new add-in management center? Thanks!
