microsoft to do
36 TopicsTasks sync failure - Outlook web vs mobile Outlook vs desktop Outlook
--- # đ **Technical Report: Persistent Outlook Web App Sync Failure Affecting Microsoft To Do / Outlook Tasks Ecosystem** **Issue Duration:** At least 3 months probably more **Platforms Affected:** - Microsoft To Do (Android) - Outlook Tasks (Windows Desktop Outlook) - Outlook Tasks (Outlook Web App) - Exchange Online (backend sync service) --- ## 1. **Executive Summary** I have experience **persistent, intermittent, and platformâspecific synchronization failures** within the Microsoft To Do / Outlook Tasks ecosystem. The critical finding is: ### **The Outlook Web App is often isolated and does not sync with any other platform.** Meanwhile: - **Windows Desktop Outlook â Android To Do sync perfectly in both directions.** - **Outlook Web App â (Desktop / Android)** do not sync. This isolates the issue to the **web appâs sync pipeline**, not the task data, not the account, and not the other apps. The failures present as: - **âSynchronization in progressâ** stuck indefinitely - **âSynchronization failedâ** when manually attempting sync - Web app showing **stale, outdated, or incomplete task lists** - Web app failing to send or receive updates from Exchange Online The same tasks that fail to sync for hours later sync successfully without any modification, proving the data is not corrupted and the failure is backendârelated. --- ## 1.1 **CrossâPlatform Sync Behavior (Critical Diagnostic Insight)** ### â **Windows Desktop Outlook â Android To Do** - Full twoâway sync - Immediate updates - Reliable and consistent ### â **Outlook Web App â Desktop Outlook** - No sync in either direction ### â **Outlook Web App â Android To Do** - No sync in either direction ### â **Outlook Web App â Exchange Online** - Appears to be failing or stalling This proves the web app is **not participating in the sync ecosystem**. --- ## 2. **Symptoms Observed** ### 2.1 **Outlook Web App** - Sync button stuck on **âSynchronization in progressâ** for hours - Manual sync results in **âSynchronization failedâ** - Web app shows outdated task lists - Web app does not receive updates from desktop or mobile - Web app does not send updates to desktop or mobile ### 2.2 **Android To Do** - Tasks created on Android do not appear in the web app - Tasks created in the web app do not appear on Android - Edits fail to propagate to the web app - Manual sync does not resolve the issue - Logout/login sometimes helps, inconsistently ### 2.3 **Windows Desktop Outlook** - Syncs perfectly with Android - Does not sync with the web app - Shows correct, upâtoâdate task data ### 2.4 **Platform Sync Matrix** | Action | Desktop Outlook | Android To Do | Outlook Web App | |--------|-----------------|---------------|------------------| | Create/edit task on **Desktop** | â Syncs to Android | â | â No sync to Web | | Create/edit task on **Android** | â Syncs to Desktop | â | â No sync to Web | | Create/edit task on **Web** | â No sync to Desktop | â | â Stays only on Web | **Conclusion:** The Outlook Web App is **fully isolated** from Exchange Onlineâs task sync pipeline. --- ## 3. **Troubleshooting Steps Already Attempted** ### 3.1 **Web App** - Hard refresh (Ctrl + Shift + R) - Full browser cache clear - Logout â close browser â reopen â login - Switching lists to force metadata reload - Creating tasks to trigger sync events - Deleting tasks to force backend updates ### 3.2 **Android** - Manual sync - Clear cache - Logout/login - Device restart - Network switching - Creating/completing tasks to trigger sync ### 3.3 **Desktop Outlook** - Verified account health - Verified Exchange Online connectivity - Verified task folder integrity ### 3.4 **Account / Backend** - Verified Microsoft Account stability - Verified no multiâaccount conflicts - Verified Exchange Online service health None of these steps produce consistent or lasting resolution. --- ## 4. **Frequency and Pattern** - Occurs multiple times per week - Occurs regardless of recent task edits - Occurs across multiple browsers - Occurs across multiple Android versions - Sync resumes randomly after hours - Sync resumes without any data changes - Sync resumes after logout/login, but inconsistently This pattern strongly suggests **backend sync token stalling**. --- ## 5. **Technical Analysis** ### 5.1 **TwoâWay Sync Failure Confined to Web App** Because: - Desktop â Android works - Web â (Desktop / Android) fails The failure is isolated to the **web appâs connection to Exchange Online**. ### 5.2 **Sync Token Stalling (Most Likely Cause)** Symptoms match known sync token stall behavior: - Endless âSynchronization in progressâ - Manual sync fails - Sync resumes randomly - Sync resumes after forced metadata refresh - Sync resumes after unrelated actions (e.g., completing a task) ### 5.3 **Not a Corrupted Task Issue** Because the same tasks later sync successfully: - No malformed tasks - No unsupported metadata - No blocked sync queue - No corrupted lists ### 5.4 **Backend Sync Pipeline Instability** The pipeline: **Web App â Microsoft Sync Service â Exchange Online â Desktop / Android** appears to be failing at the **first hop** (web app â sync service). ### 5.5 **Web App Lacks Retry Logic** The web app provides: - No manual retry - No way to cancel a stuck sync - No way to reset sync session - No way to regenerate sync token Thus, when the backend stalls, the web app remains stuck indefinitely. ### 5.6 **Android Background Sync Not the Cause** Android is syncing perfectly with desktop Outlook, proving Android is not the source of the issue. ### 5.7 **Web App Sync Isolation (New Insight)** The web app is the **only** platform failing to communicate with Exchange Online. This is now clearly a **webâappâspecific sync session failure**, not a multiâplatform issue. --- ## 6. **Impact** - Tasks frequently out of sync - Web app becomes unusable for task management - Daily workflow disrupted - Manual intervention required multiple times per week - Task state inconsistent across platforms - Reduced confidence in Microsoft To Do as a reliable ecosystem --- ## 7. **Requested Assistance** ### 7.1 **EngineeringâLevel Investigation** Specifically into: - Outlook Web App sync token behavior - Web app â Exchange Online sync session stability - Backend retry logic - Web app sync error handling - Web app task API connectivity ### 7.2 **Diagnostic Tools** If available: - Sync session logs - Sync token status - Task metadata inspection tools - Backend queue visibility - Error codes beyond âSynchronization failedâ ### 7.3 **Known Issues** Requesting documentation on: - Known To Do / Outlook Web sync token stalls - Known Exchange Online sync delays - Known intermittent sync failures - Known web app pipeline instability ### 7.4 **Confirmation Whether This Is a Known Issue** Given the duration and reproducibility, this appears to be a **backendâlevel web app sync failure**. ### 7.5 **Request for Web App Sync Session Reset** Specifically: - Manual reset of the web appâs sync session - Forced regeneration of sync token - Flush of stuck sync queues - Verification of web appâs Exchange Online connectivity --- ## 8. **Evidence Available** I can provide: - Screenshots of âSynchronization failedâ - Screenshots of âSynchronization in progressâ - Timeline of sync failures - Android device logs - Browser console logs --- ## 9. **Conclusion** This is a **persistent, platformâspecific sync failure** affecting only the Outlook Web App. Desktop Outlook and Android To Do sync perfectly, proving the backend and data are healthy. The web app is isolated and failing to communicate with Exchange Online. I am requesting **engineeringâlevel support** to reset or repair the web appâs sync session and investigate the underlying cause. ---Solved67Views0likes1CommentAll my unassigned tasks vanished overnight
Hi, about 300 of my unassigned tasks -those not on lists- vanished overnight. All of them. My tasks on lists seem to be all there. The previous day, I was doing cleaning on that list, since the android app stopped synching, and it was sluggish before that. I had over 50000 completed tasks on that list. I moved those 300 uncomplete tasks to a temporary list, deleted all completed tasks, then moved those 300 back, and deleted the temprorary list. I most definitely did not delete those 300 tasks in question, and I checked hours before going to bed and going to bed that on my phone, in the desktop app and in my desktop browser they were all present and in synch, and addings tasks was very snappy and synched across devices. Official chat was completely useless and I couldn't even reach or be connected to anybody in the correct department after banging my head against a wall for an hour. I have little hope of fixing this, but is there anything I can do, or should I just finally bail out of using this buggy mess of a software? Thanks31Views0likes1CommentDisable incessant nagware popups
I don't know about everyone else, but I am sick and tired of the nagware pop ups in Word, Excel, PowerPoint, Outlook, etc. Every single product harasses me with pop ups trying to tell me "hey, did you know this feature was here?", "you can do this if you click that", "let me hold your hand through using products you've used for decades even though you don't want daddy Microslop to do that". This is a prime example. I keep getting the same ones again and again and again and everything I've read indicates they should only appear once. But they don't. They keep coming back like a psychotic stalker ex who wants alimony even though you were never married. How do I get this nagware to stop?!164Views0likes1CommentTeilen von Listen Microsoft To Do nicht mehr möglich
Hi everyone, I've been using Microsoft To Do for years and have always been able to share lists with my family. Now, when I send my wife or son an invitation link, they get an error message saying the list isn't available and they can't join. Here's what I've tried so far: I created a new invitation link and confirmed they're signed in with their Microsoft accounts. I tried using the app on their iPad or iPhone, and also on my MacBook. I checked if the list still exists. Despite all this, sharing still doesn't work. Has something changed with To Do sharing? Is there a new requirement or setting I need to enable? The error message attached. Translated: Any help would be greatly appreciated! Thank you in advance. Best regards Martin308Views4likes5CommentsTo Do Task Details Not Showing
When I am in To Do, I can only add and complete tasks. I no longer have the option to click in and see details, add notes, or edit titles. I can see the area they are supposed to pop up in, but I can't expand the side window or see any information.120Views0likes0CommentsMicrosoft to do list app on iPhone
Hi all. Can someone please help me. I created a task in the app and then created subtasks but on one of the subtasks I had written over it today (so annoyed at myself). Does anyone how to undo or get it back. The lists help me carry out my daily stuff so really important for me to get it back. The to do list app is on my iPhone. Would really appreciated the help128Views0likes2CommentsMS Loop Task Reminders
Hi All, We would like to setup Microsoft Loop so that reminders are sent to people assigned tasks in loop one or two days, etc....before task due date. Either by syncing to Planner * which does not happen* automatically despite some online sources. Or though Power Automate... Any Ideas?1.4KViews0likes6CommentsA few questions to the new Outlook365 on Windows
Hey. After many years, i switched from Office2021 to Office365, mostly because of the 1TB OneDrive storage and more up2date software. I installed the so called "new Outlook365" desktop on my Windows computer. The program says: Microsoft Outlook-Version 1.2024.807.100 (Production). I am not sure if its already a final product or a beta version đ I use outlook for many of my e-mails and to manage my calendar/tasks/to do lists. My questions: 1) I added in the new Outlook365 several IMAP e-mail accounts and found nowhere a possibility to change the senders name, which is shown normally next to the e-mail adress. I changed the name in the webmail client from my webhosting account, but that didnt help either. --> Is it not possible in the acutally version for IMAP e-mail accounts to change the senders name? 2) How can i customize the left app bar in the new Outlook365? I see there only a few app icons, but no option to change them or to add for example OneDrive, To Do, etc. 3) How i can integrate my To Do List & One Note from Microsoft365 in Outlook? I have looked everywhere, but have found no option, how i can integrate them in the new outlook. Hope the community can help to resolve my problems. Thanks in advance. Greets1.7KViews0likes2CommentsHow to see Planner tasks in personal (unpaid Outlook) ToDo
We've got a few external guest users added to a Plan in Planner, with some tasks assigned to the guests. Can these guests see assigned tasks in their personal ToDo application? They don't have paid-for plans, but rather a free one.315Views0likes0CommentsPlease help! I manage someone's mailbox. How can I create a Task for them?
I manage someone's mailbox for them. How can I create a Task for them from an email in their mailbox? I have access to their calendar and contacts, but I do not have access to their Tasks, so I can't drag and drop an email to the Task icon, as I can't see the Task icon. I understand I can flag an email and this will appear in their Flagged Emails sections in To Do, but as I don't have access to their To Do, I can't turn it in to a task from there. Any ideas how I can turn an email into a task in someone else's mailbox? Or any kind of workaround? Thanks so much!354Views0likes0Comments