Built an Android app for OneDrive duplicate detection (something I wish Microsoft offered natively)
After years of dealing with duplicate photos and videos in OneDrive, I built a solution and wanted to share it with the community. **The problem:** - Samsung Gallery sync creates duplicates in both "Camera Roll" and "Samsung Gallery" folders - WhatsApp media gets backed up twice (original + shared copy) - App resets/reinstalls trigger re-uploads with "(1)" suffixes - No native duplicate detection in OneDrive **What I built:** OneDrive MediaOps - an Android app that scans for duplicates directly in the cloud. No need to download files to a desktop first. Key features: - Cloud-based scanning (no downloads required) - Algorithm visually identical photos even with different filenames - Preview before deleting - Batch deletion **Why cloud-based matters:** With 50GB+ of photos, downloading everything to run a desktop duplicate finder wasn't practical. This scans media directly via the Graph API. Available on Google Play: https://play.google.com/store/apps/details?id=com.onedrive.mediaops&pcampaignid=web_share Would love feedback from the community - especially if you've been dealing with the Samsung/OneDrive sync duplicate issue.Synchronization issue with unknown files
Hello. I have synchronization issue with 2 uknown files since 2 years or so. During that period I've restarted synchronization once. It didn't help. The weight of files sometimes changes what suggests that those files are in constant use. I would have excluded them from synchronization, but I can't identify them. There is no place where I could have found the name and location of those files. Does anyone know, by any chance, where are any logs or how to enable them, if they are not enabled by default, to troubleshoot that? Thanks in advance for any help in that matter... and Happy New Year!!How does local OneDrive determine if a local file needs to be updated?
When using multiple computers to edit a OneDrive file, a computer often fails to recognize its local copy needs to be updated, even though the file on all computers is set to "Always keep on this device." This means changes are lost with no conflict error generated. Is the OneDrive algorithm for deciding when to update a local version of a file documented anywhere? Usually when a change is made to a file, it starts uploading to the cloud within seconds. Within several seconds after the changed file is uploaded, other computers will recognize their local copy is outdated and will begin downloading the changed version. That is the expected behavior. But often, that doesn't happen. The outdated version is used to make new changes. Those new changes are uploaded successfully. No conflict warning is generated. The earlier changes are lost forever. I have not found any documentation on how local Windows OneDrive decides if its local version of a file needs to be updated. Is it looking at file size? Timestamps? If timestamps, is there a margin of time sync differences? Does the OneDrive metadata include the source device of the last upload? Not knowing any of this I cannot troubleshoot the problem much beyond establishing that the problem is not with uploading changes. OneDrive local is reliably uploading changes. MD5 hash codes in the cloud match the hash of the changed file on the source computer. I don't have time to jump through hoops with someone at frontline Microsoft support who doesn't know any more about the algorithm than I know in order to get the issue escalated to someone with the information needed to pinpoint the issuse.
Dossiers Document / les sous dossiers et les fichiers sont invisibles sur OneDrive
Bonjour à tous, Sur mon espace OneDrive en ligne le dossier Documents semble vide et pourtant il y 250Go de sauvegardé. Sur mon PC, le dossier Documents est bien complet. Jai tenté quelques manips notamment stopper la synchronisation puis la redémarrer. Rien n’y fait. Merci d’avance pour vos bons conseils et bonne fêtes à tous. Yanick
Can OneDrive mobile sync a specific local folder on Android or iOS?
Hi, I would like to understand what is officially supported regarding folder synchronization in the OneDrive mobile app on Android and iOS. Specifically: - Is it possible to select a specific local folder on a mobile device and configure OneDrive mobile to automatically sync that folder? - Or does the OneDrive mobile app only support manual uploads and limited automatic features such as camera roll backup? I am looking for an official clarification on the supported behavior of OneDrive on mobile devices. Thank you.Move files from Account A to Account B 165 GB data
I’ve been using Microsoft Office 365 Family for several years, sharing it with my family members. We have 6 accounts, each with 1 TB of storage. One of my accounts has now reached 985 GB, so I need to transfer files from Account A (my account) to Account B (my wife’s account). These files mainly consist of photos and videos — over 200,000 files in total. I tried transferring a 6 GB wedding shoot (.ISO format), but it took more than an hour. Re-downloading and uploading all the data isn’t feasible as my internet connectivity is limited to 100 mbps only. I’m looking for the best and most efficient way to move these files directly between OneDrive accounts.New Outlook: Shadow contacts not stored in Outlook.com, no sync/export and missing Birthday calendar
I’m reporting a reproducible data‑integrity issue in the New Outlook for Windows that affects Outlook.com contact storage and synchronization. 🔍 Summary When a contact is created in the New Outlook, the client appears to save it successfully. However, the resulting contact is not stored in the user’s Outlook.com account as a normal cloud contact. Instead, it becomes what I would describe as a local “shadow contact” in the New Outlook cache. ⚠️ Observable Behavior • The contact appears in Outlook.com → People, but does not show “Stored in: Outlook” • The contact does not appear in Outlook.com CSV exports • The contact does not sync to mobile devices connected to the same account • The contact does not populate the Outlook.com Birthday calendar • The contact is lost if the New Outlook app is reinstalled or its local store is cleared 🧪 Steps to Reproduce 1. Open the New Outlook for Windows 2. Create a new contact and add a birthday 3. Save the contact 4. Open Outlook.com → People 5. Locate the contact — it will appear, but the “Stored in: Outlook” field is missing 6. Export contacts from Outlook.com (CSV) — the contact will not be present 7. Check a mobile device configured with the same Microsoft account — the contact will not be present 8. Check the Outlook.com Birthday calendar — the birthday will not appear 9. Reinstall the New Outlook app — the contact will be gone ✅ Expected Behavior • Contacts created in the New Outlook should be stored as first‑class Outlook.com contacts • They should appear with a proper “Stored in: Outlook” location • They should sync across devices, export via Outlook.com, and populate the Birthday calendar ❌ Actual Behavior • Contacts created in the New Outlook are effectively “shadow contacts” stored in a local cache • They look normal in the New Outlook UI, but they are incomplete, non‑synchronizing objects from the service’s perspective 📉 Impact • Silent data loss risk for users who assume contacts are in Outlook.com when they are not • Inconsistent contact and birthday data across devices and services • Split contact store model: • Real Outlook.com contacts • Local shadow contacts created by New Outlook 📎 What I’ve Already Done • Submitted feedback through the New Outlook (Help → Feedback → Report a Problem) • Submitted a detailed report via the Windows Feedback Hub • Contacted Microsoft Support, who advised that escalation must occur via Feedback 📣 Request I’m posting this here to document the issue publicly and to ask: • Can anyone from the Outlook / Exchange / Outlook.com team confirm this behavior? • Can other users reproduce this with the steps above? Given the data‑integrity implications, I’m hoping this can be brought to the attention of the relevant engineering team. Any confirmation, additional data points, or official guidance would be appreciated.".tmp.driveupload"
I am having an issue where my word doc (set to autosave to OneDrive business desktop app) on my PC is suddenly saved in a ".tmp.driveupload" folder online under a different file name (random numbers), with autosave switched off. If I do not notice this happening, the change to the document is not saved under the expected folder and file name, resulting in no change made to the file I opened. The only workaround I've found is to "save a copy" and overwrite the file I opened in the original folder. This only works if I notice the sudden name change and file save in the tmp folder. If I don't, the changes are lost because the tmp file is deleted (to recycle bin) on exit and the tmp folder is not synced to my PC. I have to go online to the OneDrive business website, guess which file it may be, restore that from the OneDrive recycle bin, and hope it is the file I was looking for. The frequency of this happening means that there are numerous tmp files under pseudo file names to scour through. One-hour plus on the phone with MS Office subscription support is of no help.
Resolving erroneous network errors with personal vault
I appreciate there are many(!) general OneDrive vault issues floating around but I wondered does anyone have a solution to a very specific oddity which has rendered OneDrive useless to me - and hence is preventing me purchasing it for use with my small business. Multiple Windows 11 PCs (all up to date, clean etc etc) - OneDrive working correctly, access personal vault and authenticate, all good can see files and access them. One PC hard-line ethernet, the other via WiFi OneDrive website - all working correctly including vault. Samsung Galaxy S10FE Android phone (all up to date, patched, clean etc etc). OneDrive app (v7.32.1) is working fine except for the vault... after authentication (PIN or Biometric I've tried both), the vault appears empty. Upon refreshing, it throws a nonsense "not connected to wifi/mobile data" error. Things to note... all devices are signed into the same MS account, I've tried different WiFi, just mobile data vs WiFi, I've uninstalled, rolled back to factory, cleared cache, reset app, logged-out and logged-back in again. Nothing root'ed or custom on the 'phone, just plain android with Samsung setup. I've confirmed definitely connected - as evidenced by other files upload and download fine, speedtest app shows steady 500/70 on the wifi. Also tried the same version of the app on a cheapie Motorola android phone, exactly the same issue. Can anyone help here - anyone else seen this? I need to make a decision as to whether to subscribe for my SB but currently it's useless - the vault is primarily what we need. Thanks in advance.
Add Shortcut to Files fails
My wife and I have a family Office 365 subscription. I have shared a folder with her with permissions to edit. She gets the email confirming this and can open the link and see the files in the folder. When she clicks "Add shortcut to My files" she gets a message "1 shortcut wasn't added". This happens using Onedrive web (through Edge) and on the Onedrive app on her iPhone. On the iPhone she hit "Add Shortcut to Files" and it says "By addding "Folder Name" to your OneDrive, you can sync it on your computers with other OneDrive files". When she clicks OK it says "Adding" and then comes up with a message "Something went wrong". Any ideas?
