OneDrive for Mac failed to launch after update

Question

OneDrive for Mac failed to launch after update

Tom 115

Hi,

My OneDrive failed to launch after the latest App Store update (version 26.078.0426). It said 'OneDrive can't start - there's an error with this application, please download the application on this computer and try again'.

Any idea?

Thanks.

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Mike McCollister 25 Reputation points

2026-05-21T00:09:24.1533333+00:00

Same for me too. I've tried uninstalling and reinstalling and resetting it but I get the same thing. Looks like a bad one got out. Hopefully Microsoft will fix it soon.
Camden 25 Reputation points

2026-05-21T01:16:14.1966667+00:00

Also seeing this issue. I did a bunch of troubleshooting after the update on my MacBook this morning and can confirm that none of the usual steps like the ones in the AI answer work. I haven't updated OneDrive on my other Mac and it's still working there. I agree that it looks like a bad update was pushed today.
Kyle Horkley 5 Reputation points

2026-05-21T02:17:39.76+00:00

Same here, bad update altogether. Restoring the app bundle from Time Machine is the only way I've got it to work again.
Anonymous

2026-05-21T02:57:42.3566667+00:00

Is the issue still persisting?
Eric Melendez II 20 Reputation points

2026-05-21T03:42:09.57+00:00

I just ran into this. The I followed someone else's suggestion and used Time Machine to rollback the app to the previous version. 100% unacceptable. Most likely an AI code change that got pushed to prod. Users should not be trained to fear software updates for applications they need to use everyday.
FCC Admin 0 Reputation points

2026-05-21T03:54:27.01+00:00

Has anyone else submitted something to support? I lost access on both my Macs. This is ridiculous.
MYO ZAW HTET 0 Reputation points

2026-05-21T04:24:25.92+00:00

The same issue occurred to me after updating the OneDrive on my MBA as of this morning. No known solution solves this issue still even after hours of attempts.
Jackson Chen 0 Reputation points

2026-05-21T08:13:00.2433333+00:00

Same, Microsoft better roll out another update within 24 hours, this is unacceptable.
FAN KA KIT 5 Reputation points

2026-05-21T08:17:09.83+00:00

17 hours later and still no fix. This is unacceptable from a Megacorp like MS. Insane!!!
clausimausi 0 Reputation points

2026-05-21T11:27:22.05+00:00
Same here: The app-store version offered to update via the green “UPDATE AVAILABLE”.

On my other device (all MacOS 26.5) I use the MS-version via the internal MS365 updater and here no problems.

App-Store: 26.078.0426 (bug)

Internal/MS365 update: 26.074.0420.0001 (works)
Anton 0 Reputation points

2026-05-21T11:44:13.4333333+00:00

This is infuriating!
Cornel Koschat 0 Reputation points

2026-05-21T13:02:41.0066667+00:00

We suffer from the same issue here.

Working in an IT-company and we can basically just shake our head and tell the bosses of companies who have to TIme Machine to go back or are simply not skilled enough to work through the web browser with OneDrive to sit still and wait till Microsoft fixes it.
Edgar Adamyan 15 Reputation points

2026-05-21T13:05:55.97+00:00

The solution is quite simple: download the app from the Microsoft website instead of the App Store: OneDrive

Answer recommended by moderator

Edgar Adamyan 15

I tried reinstalling OneDrive several times, but nothing worked. The solution is quite simple: download the app from the Microsoft website instead of the App Store: OneDrive

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5 additional answers

Mike McCollister 25 Reputation points

2026-05-21T00:09:24.1533333+00:00

Same for me too. I've tried uninstalling and reinstalling and resetting it but I get the same thing. Looks like a bad one got out. Hopefully Microsoft will fix it soon.
Camden 25 Reputation points

2026-05-21T01:16:14.1966667+00:00

Also seeing this issue. I did a bunch of troubleshooting after the update on my MacBook this morning and can confirm that none of the usual steps like the ones in the AI answer work. I haven't updated OneDrive on my other Mac and it's still working there. I agree that it looks like a bad update was pushed today.
Kyle Horkley 5 Reputation points

2026-05-21T02:17:39.76+00:00

Same here, bad update altogether. Restoring the app bundle from Time Machine is the only way I've got it to work again.
Anonymous

2026-05-21T02:57:42.3566667+00:00

Is the issue still persisting?
Eric Melendez II 20 Reputation points

2026-05-21T03:42:09.57+00:00

I just ran into this. The I followed someone else's suggestion and used Time Machine to rollback the app to the previous version. 100% unacceptable. Most likely an AI code change that got pushed to prod. Users should not be trained to fear software updates for applications they need to use everyday.
FCC Admin 0 Reputation points

2026-05-21T03:54:27.01+00:00

Has anyone else submitted something to support? I lost access on both my Macs. This is ridiculous.
MYO ZAW HTET 0 Reputation points

2026-05-21T04:24:25.92+00:00

The same issue occurred to me after updating the OneDrive on my MBA as of this morning. No known solution solves this issue still even after hours of attempts.
Jackson Chen 0 Reputation points

2026-05-21T08:13:00.2433333+00:00

Same, Microsoft better roll out another update within 24 hours, this is unacceptable.
FAN KA KIT 5 Reputation points

2026-05-21T08:17:09.83+00:00

17 hours later and still no fix. This is unacceptable from a Megacorp like MS. Insane!!!
clausimausi 0 Reputation points

2026-05-21T11:27:22.05+00:00

Same here: The app-store version offered to update via the green “UPDATE AVAILABLE”.

On my other device (all MacOS 26.5) I use the MS-version via the internal MS365 updater and here no problems.

App-Store: 26.078.0426 (bug)

Internal/MS365 update: 26.074.0420.0001 (works)
Anton 0 Reputation points

2026-05-21T11:44:13.4333333+00:00

This is infuriating!
Cornel Koschat 0 Reputation points

2026-05-21T13:02:41.0066667+00:00

We suffer from the same issue here.

Working in an IT-company and we can basically just shake our head and tell the bosses of companies who have to TIme Machine to go back or are simply not skilled enough to work through the web browser with OneDrive to sit still and wait till Microsoft fixes it.
Edgar Adamyan 15 Reputation points

2026-05-21T13:05:55.97+00:00

The solution is quite simple: download the app from the Microsoft website instead of the App Store: OneDrive
Deleted

This comment has been deleted due to a violation of our Code of Conduct. The comment was manually reported or identified through automated detection before action was taken. Please refer to our Code of Conduct for more information.

Answer 1

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Answer 2

The Mac App Store version of OneDrive is simply broken right now, it looks like Microsoft pushed a faulty update.

The problem appears to be that they have a system that checks if the app is complete by checking for the presence of items listed in OneDrive.app/Contents/Resources/OneDrive.app.manifest. The current version of this file has references to items that, to my understanding, get stripped during the Mac App Store publishing process, such as OneDrive.app/Contents/OneDrive File Handler.app/Contents/embedded.provisionprofile.

I was able to find the string MacManifestValidationFailed in one of the ~/Library/Containers/com.microsoft.OneDrive-mac/Data/Library/Logs/Personal/*.odl log files from a failed launch.

Answer 3

Same experience here as Frisho described above. I was using the App Store version of OneDrive, and it updated along with the rest of my Office apps through the App Store. Everything initially seemed fine, but when I clicked the OneDrive menu bar icon, there was a green “UPDATE AVAILABLE” button showing. That seemed odd since I had literally just updated it via the App Store.

Out of curiosity, I clicked the Update button inside the OneDrive menu bar app — and that’s when the error occurred.

Resetting OneDrive didn’t fix it, so I ended up deleting OneDrive from Applications, restarting my iMac, and downloading/installing the standalone version directly from Microsoft. After that, everything worked again.

The only lingering issue is what I assume is a large leftover cache folder located at:

Username → Library → CloudStorage → OneDrive Personal

My guess is that these are locally downloaded files from the previous App Store installation that are now abandoned by the new standalone install. As a test, I had a 500 MB Photoshop file stored locally in that folder. When I opened the same file through the new OneDrive installation, it downloaded the file again from the cloud — so now I effectively have two copies taking up space on my drive.

I’m tempted to delete the old CloudStorage folder, but I’m leaving it alone for now since storage space isn’t an issue and I don’t want to accidentally break the new OneDrive installation if it’s still referencing it somehow (although I doubt it is).

Hopefully the standalone OneDrive app updates cleanly and automatically going forward. One of the reasons I switched to the App Store versions in the first place was because I really disliked Microsoft Auto Updater.

Answer 4

Frisho 10

Same issue here. I was using the installation from the Apple App Store and ended up deleting OneDrive and reinstalling it as a standalone package available from Microsoft. That seemed to solve the issue for me.

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