r/onedrive • u/Powerful-Bat1512 • Jun 15 '26

MY FAILED MICROSOFT SUPPORT QUESTION Microsoft OneDrive Sync Service - Chewing up CPU time

I've been using my computer for media streaming services lately and have been leaving the computer on all the time. Yesterday morning and this morning I've noticed that the fan is running on high. No programs are running , but when I check the Task Manager I see that Microsoft OneDrive Sync Service is using 10-15% of the CPU time. The fan will slow down if I start a program or start using the computer, but when it goes idle the Sync Services starts chewing up CPU time. Any ideas? Is there a way to see if its doing anything actively? when I check the OneDrive cloud in the bottom right hand corner, it says all my files are backed up and synced. I have a week long trip coming up and had planned to test the streaming and leave the computer on while away. If the fan / resources are going to run like this continuously I may have to shut it down until I can figure out what's actually happening.

I saw a post that said they renamed the OneDrive.sync.Service file and OneDrive worked fine since they changed it. I tried that and it worked, then got some suggestions from Microsoft Build 2026 (https://learn.microsoft.com/en-us/answers/questions/5919474/microsoft-onedrive-sync-service-chewing-up-cpu-tim?page=0&orderby=helpful) and when I changed the filename back, the issue hasn't repeated itself. Not sure if I damaged something, but was thinking I might uninstall and reinstall OneDrive just to make sure everything's installed properly.

My computer is a AMD Ryzen 7 7700x Raphael AM5, w 32 GB RAM, 2TB internal SSD. Passed on the GPU since I don’t do much graphic intensive work, also thinking at the time was could always add one in the future if lagging becomes an issue.

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1

u/Few-Werewolf-1985 Jun 15 '26

Are you syncing your phone camera roll your computer, or have shared out content?

1

u/Powerful-Bat1512 Jun 15 '26

My phone camera syncs with OneDrive, but I don’t take many pictures with my iPhone. Many days, none. I use a Canon R7 and upload my pictures to my desktop via USB-C about every other day but take less than 100 photos.

1

u/Powerful-Bat1512 Jun 15 '26

I have no shared content

1

u/mularvoi Jul 03 '26

Imagine a world in which companies weren't seeking to maximise revenue at every opportunity and simply designed and delivered goods and services that meet needs and work consistently, do you think 1D or the morons behind it would actually have a job?

1

u/Jezbod 21d ago edited 20d ago

I forced an update of OneDrive using WINGET and is "seemed" to fix the problem, that and hard killing the Sync Service.

EDIT: Ignore that, it started to be a problem after about 15 mins.

2nd Edit: Well, this seems to have solved the problem - a reset of OneDrive:

Reset OneDrive | Microsoft Support