OneDrive Hangs MacOS Tahoe 26.4.1

Question

OneDrive Hangs MacOS Tahoe 26.4.1

Marty Corrigan 0

I have the OneDrive app on my MacBooks (I have 2, one running MacOS Sequoia 15.7.5, the other Tahoe 26.4.1). Since my second MacBook upgraded to Tahoe (26.x.x), OneDrive hangs. It hangs while downloading attachments in Outlook. While saving or opening files in Word or Excel. While downloading files using Safari, Brave, or Chrome. It hangs while browsing or opening files in Finder.

It is always the same thing: while selecting the location to open/store the file, it hangs on the last folder I try to open as I drill down to the target location. It displays the spinning multi-color wheel and sits there until I force close the application I was in. Then after that it will hang until I restart the MacOS. Sometimes in Finder, it opens that last folder as empty and runs the spinning gear instead of the multi-color wheel with the words Updating Contents. It does not happen if all the files in the folder are already local on the PC. And I did notice that for these folders, it seems to be the only one with a just a cloud icon to the right of the name and not a cloud with a down arrow. In the attached screen shot, the folder that hung was the 'Lions Club' folder.

User's image

I do not have this issue on the MacBook running Sequoia. Is this a known bug? Because I have sent countless error information dumps off to Microsoft over the past several weeks.

The versions of OneDrive running are:

On the Sequoia system - Version 26.055.0323.0004 (Standalone) (15.7.5)
On the Tahoe system - Version 26.055.0402.0002 (Standalone) (26.4.1)

Is there a fix for this?

Marty Corrigan 0 Reputation points

2026-04-27T20:04:42.6433333+00:00
The AI generated reply/fix is not a relevant answer for two reasons:

There is no newer version of the MacOS to be upgraded to for which this would no longer be an issue.

The symptoms of the issue are different and the workaround does not help. The "Open and Save Panel Service" process was not using a high amount of CPU. And there was an instance of this process running for each app in which I had previously accessed a OneDrive file. None of them was unresponsive. Closing one certainly freed up the frozen app. But after closing and re-starting the OneDrive app, it froze immediately on the same file. Closing all instances of the "Open and Save Panel Service" processes and then stopping/re-starting OneDrive also did not fix the issue.

It is faster, and more effective to simply restart the MacOS, since this does the same thing and somehow does clear the issue at least temporarily.

I could not reply to that post, as there was no comment option.
Bruce Wiggins 0 Reputation points

2026-05-12T15:12:21.77+00:00

These AI responses are just a waste of time. OneDrive seems completely broken on Tahoe (26.4.1 - so updating to 15.2 makes no sense to me).

Applications hang waiting for OneDrive to respond. Making new folders causes finder to hang. Even files that are already downloaded are an issue (I'm constantly quiting OneDrive to get the OS to respond, and then start it again.

This is causing me (and others, it seems) a lot of bother!

Please fix.

2 answers

Your answer

Marty Corrigan 0 Reputation points

2026-04-27T20:04:42.6433333+00:00

The AI generated reply/fix is not a relevant answer for two reasons:

There is no newer version of the MacOS to be upgraded to for which this would no longer be an issue.

The symptoms of the issue are different and the workaround does not help. The "Open and Save Panel Service" process was not using a high amount of CPU. And there was an instance of this process running for each app in which I had previously accessed a OneDrive file. None of them was unresponsive. Closing one certainly freed up the frozen app. But after closing and re-starting the OneDrive app, it froze immediately on the same file. Closing all instances of the "Open and Save Panel Service" processes and then stopping/re-starting OneDrive also did not fix the issue.

It is faster, and more effective to simply restart the MacOS, since this does the same thing and somehow does clear the issue at least temporarily.

I could not reply to that post, as there was no comment option.
Bruce Wiggins 0 Reputation points

2026-05-12T15:12:21.77+00:00

These AI responses are just a waste of time. OneDrive seems completely broken on Tahoe (26.4.1 - so updating to 15.2 makes no sense to me).

Applications hang waiting for OneDrive to respond. Making new folders causes finder to hang. Even files that are already downloaded are an issue (I'm constantly quiting OneDrive to get the OS to respond, and then start it again.

This is causing me (and others, it seems) a lot of bother!

Please fix.

Answer 1

Hendrix-C 16,725 Microsoft External Staff Moderator

Hi @Marty Corrigan,

From my knowing in Mac, a cloud with arrow icon symbolizes for online-only files in Finder and when the file is downloaded locally, the icon is removed. However, the Lions Club file is showing a cloud icon without arrow which is a strange behavior. I have researched through Microsoft product help and other official information sources but up to now, there is no Microsoft help article or announcement found addressing this specific issue or confirmation about an incident/bug occurring.

Based on your sharing about the situation, I suspect this looks like a compatibility/regression issue between OneDrive and MacOS File Provider on the Tahoe Mac given that the Sequoia one is working fine and the failure appears inside Finder-backed save/open browsing. Restarting Mac helps reset the processes involved in the Finder's cloud file and the OneDrive sync client state and also helps proves the culprit is highly due to a stuck OneDrive state on your Tahoe Mac.

I suggest trying these steps to narrow down the situation:

1/ Ensure the folder is downloaded locally

Right click the folder Lions Club (or its parent folder) and choose "Always keep on this device" then wait until the download process finishes before using it to see if it works properly now.

2/ Unlink and relink OneDrive

Click the OneDrive cloud icon in your Menu bar > Help & Settings > Preferences > Account > Unlink this Mac
Press Command + Space to open Spotlight > type "keychain" > choose Keychain Access > search for OneDrive and delete the OneDrive Cached Credentials if it exists.
Use Spotlight to open OneDrive and relink it to see if the issue persists

3/ Reset OneDrive if unlink/relink doesn't help

Note: Resetting your OneDrive will remove all local content. Please back-up your file carefully because anything that isn't synced to the cloud can be lost.

Open Finder and go to Application
Right click OneDrive app > Show Package Contents > Contents > Resources
Double click to run the ResetOneDriveAppStandalone.command (or similarly ResetOneDriveApp.command)
Launch OneDrive and set it up then test again to see if the issue persists.

Please understand that my initial response does not always resolve the issue immediately. However, you can try these steps and let me know if it works for you. If not, we can work together to figure out the solution.

If you have any questions or need further assistance, please feel free to share them in the comments on this post so I can continue to support you.

Thank you for your understanding and cooperation. I'm looking forward to your reply.

If the answer is helpful, please click "Accept Answer" and kindly upvote it.

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread

Hendrix-C 16,725 Reputation points Microsoft External Staff Moderator

2026-04-28T22:39:00.56+00:00

Good day @Marty Corrigan,

Hope things are running smoothly on your end.

Following up on the support thread we've been working on. If you need assistance with anything else, kindly respond to this post, and I will be happy to help.

I want to make sure everything is working as expected and that your experience remains uninterrupted.

Thank you for your patience and understanding throughout the troubleshooting process.

I look forward to hearing from you soon.
Marty Corrigan 0 Reputation points

2026-04-29T20:50:30.4533333+00:00

I unlinked and then re-linked the drive following your instructions. That did not fix the issue.

I unllinked then re-linked the drive following the instructions here:

https://support.microsoft.com/en-us/office/unlink-and-re-link-onedrive-3c4680bf-cc36-4204-9ca5-e7b24cdd23ea

and that also did not work.

I did not yet try to reset the OneDrive because I need to back up the local files to make sure I do not lose anything. So far, rebooting seems to be the best bet although that only works for a short time.
Hendrix-C 16,725 Reputation points Microsoft External Staff Moderator

2026-04-29T23:00:18.7433333+00:00

Hi @Marty Corrigan,

Greatly appreciate your updates.In that case, I suspect this is likely a compatibility issue between OneDrive and the MacOS Tahoe 26.4.1 version. I have researched through Microsoft product help and other official information sources but up to now, there is no Microsoft help article or announcement found and also no troubleshooting guidance addressing this issue.

Although rebooting only works for a short time, it's absolutely the best bet now since you can keep using OneDrive and avoid negative effect to your workflow. In the meantime, please report this behavior directly to Microsoft via OneDrive > Feedback so the Microsoft engineering team can acknowledge this issue and resolve it as soon as possible.

If you are using an organization-managed device, I highly suggest connecting Global Admin in your organization and ask to create a service request with Microsoft support. A technical support engineer can perform a remote session to investigate the situation, verify the backend configurations, and run any necessary synchronization tools to resolve the problem. If the issue requires further attention, he/she can escalate it to a specialized team for deeper analysis.

For detailed instructions on how to get support, please refer to Get support - Microsoft 365 admin. If you don't know who your IT administrator is, please refer to this article: How do I find my Microsoft 365 admin? - Microsoft Support

Thank you for your patience and understanding. Wishing you a great day ahead.
Marty Corrigan 0 Reputation points

2026-05-14T21:11:17.17+00:00

I did open a ticket with Microsoft, since I am the site administrator of our 365 environment. Over the course of the ticket, Microsoft autoupdate installed a new version of the OneDrive and the issue seems to have resolved itself. It went from version 26.063.0405.0002 to version 26.074.0420.0001. I do not know how many updates this represents, but when I opened the ticked on 5/8 26.063 was the most current version. And today is 5/14, only 6 days later.

Just like my car, as soon as a certified technician gets near it, it works perfectly.
Hendrix-C 16,725 Reputation points Microsoft External Staff Moderator

2026-05-14T21:48:05.7233333+00:00

Hi @Marty Corrigan,

Thank you for your prompt update.

It's such good news that your concern is well-resolved now.

If you have any concerns or questions in the future, please don’t hesitate to reach out. Not only will I be happy to assist you, but all moderators in the Q&A forum will also do their best to provide support and guidance.

Wishing you a wonderful day ahead.

Answer 2

This behavior matches a known macOS 15/Tahoe issue where apps hang when opening or saving files stored in OneDrive-backed Desktop or Documents folders.

On macOS 15, opening or saving files in these locations can cause the app’s Open/Save dialog to freeze with the spinning wheel. The issue is fixed in macOS 15.2 and later. When updating is not possible, the documented workaround is to terminate the macOS Open/Save panel service and then restart OneDrive and/or move the file to a different folder.

Workaround steps (macOS 15/Tahoe):

Open Activity Monitor (Applications > Utilities, or use Cmd+Space and search for Activity Monitor).
In the search box, type OpenAndSavePanelService.
Select the OpenAndSavePanelService process (it typically shows very high CPU or “No response”).
Click the X button in the Activity Monitor toolbar and choose Force Quit.
Quit and restart OneDrive.
For saving: save the Office file to a different folder location.
For opening: move the file out of Desktop/Documents into another folder, then open it again.

If the Tahoe device is not yet on a macOS build that includes this fix, updating macOS to at least 15.2 is the long‑term resolution.

References:

Fixes or workarounds for recent issues in OneDrive

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OneDrive Hangs MacOS Tahoe 26.4.1

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