Fix Microsoft OneDrive Not Signing in on Mac (Top 9 Solutions)

Last Updated on Aug 9, 2023

Despite being one of the best cloud-based backup solutions, the OneDrive app is susceptible to several problems.  OneDrive not signing in is one of the often reported issues on this app. The problem manifests in different ways, depending on the cause and the macOS version you are running. 

For instance, you may get the “OneDrive isn’t connected” or the “Make sure you typed your email address correctly…” error message. Some users have also reported getting an error code 8004dec6, while others get stuck in the “Signing in” screen. In either case, one thing is clear: you cannot sign into OneDrive on Mac. 

The sign-in issue on OneDrive for Mac is triggered by different causes, as you will learn in this guide. The guide illustrates some of the most effective solutions you can use to fix the problem on your own. 

What is OneDrive? 

OneDrive—offered as OneDrive for Business and OneDrive Personal—is a cloud-based backup solution offered by Microsoft. In its proper working condition, OneDrive automatically syncs files from your Mac. You may use this service to securely save and share your files and documents over the Internet. 

While OneDrive is built-into Windows 10, you need to manually install and configure the app on Mac. Thereafter, it will automatically sync and backs your files over the cloud. As such, you can seamlessly log into OneDrive and access the stored data on other devices. 

Though designed to be intuitive and work seamlessly, OneDrive does not always work as expected. 

Why is My Microsoft OneDrive Not Signing In?

OneDrive not signing in is a rather common issue on Mac computers. When it happens, you may get an error message that the login attempt was not successful or the login credentials used are invalid. 

In yet other cases, Mac users have reported that their devices were stuck between the “Signing in “and “OneDrive isn’t connected” screens. Regardless of the error prompt you are getting, the OneDrive sign-in issue can stem from different causes, including: 

  • Expired Cached Credentials for OneDrive – are you getting the “sign-in required”, “check for changes”, or “we can’t save” errors on your OneDrive for Mac? Chances are that the cached credentials for OneDrive on your Mac are expired. 
  • Compatibility Issues – Starting from February 1st, 2019, OneDrive discontinued support for Mac OS X 10.11 and earlier versions. If you are running an unsupported macOS version, you may encounter such sign-in issues. To fix the problem in such a case, upgrade to a supported macOS version before installing OneDrive. 
  • Invalid Username or Password – you may get the “invalid username or password” error or something similar, even when you enter the right email address and password on the OneDrive sign-in screen. In this case, you should first check whether you are using valid credentials, as illustrated below. 
  • Corrupted App Cache Files – corrupted OneDrive cache files may also prevent you from signing into the app. Just clear the corrupted files, as directed later in this guide. 
  • Outdated/Corrupted OneDrive App – the OneDrive app installed on your Mac may just be outdated, in which case you should update or reinstall it. 
  • Network Connectivity Issues 
  • Interference by some OneDrive Services – though running in the background, some OneDrive services may conflict with each other, hence triggering the sign-in problem. Stopping such services often fixes the Microsoft Onedrive, not signing-in problem on Mac.

How to Fix the Microsoft OneDrive Not Signing In on Mac Issue 

For OneDrive Personal, you need to have a free Microsoft account for you to sign in. If you are using OneDrive for Business, you’ll need the necessary account with the business/organization. If you already have these, but still cannot log into OneDrive on your Mac, then the problem is something else. 

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Since the OneDrive sign-in issue is known to be caused by multiple things, these are some of the solutions you should use to troubleshoot and fix it: 

Solution 1: Check Whether Your Login Email and Password are Valid

If the password you provided while signing up is rather easy, Microsoft may ask you to alter the password. They will then send you reminders to change the password now and then. If you have been ignoring such requests for a while, Microsoft could invalidate the credentials. 

Another scenario is when you had been using your work or school email to sign in to OneDrive, but have since moved from the institution. As such, it makes sense to first check whether your OneDrive credentials are still valid. To do this, try signing into your OneDrive account online as follows: 

  1. On your Mac, launch your preferred browser app and navigate to the official OneDrive website.
  2. Click on the circular Profile icon—towards the top-right corner of the screen to open the sign-in page. 
  3. Type in your OneDrive phone number or email address and click on the blue Next button to enter your Password.

If you successfully sign into your account and can view your saved files, then your login credentials are valid. If you cannot sign into your OneDrive account online as well, visit the Can’t sign in to Microsoft account for further assistance. 

If you cannot sign into an organization’s OneDrive account, try resetting the password. Alternatively, contact the organization’s IT department for further assistance. 

Solution 2: Check for OneDrive App Updates

Can successfully sign into your OneDrive account online—as described in solution 1 above—but still cannot sign into the OneDrive app? You need to check whether your OneDrive app is up to date and possibly update it. 

Microsoft continually rolls out updates for its software, including the OneDrive app. As such, you may have missed an update. To rule this possibility out, check for OneDrive updates in the App Store on your Mac. Here is how you should go about it:

  1. Click on the App Store app from the Dock to launch it. 
  1. Select the Updates option to view all available app updates
  2. Check if there is an update available for the OneDrive app. If you can’t see any, press the Command and R keys simultaneously to refresh the page. 
  3. If an update is listed for the OneDrive app, select it then click on the Update button adjacent to the OneDrive app.

Now follow the on-screen prompts to update the OneDrive app on your Mac. 

Solution 3: Re-login to OneDrive 

A simple glitch in the temporary files can cause the OneDrive not signing in problem. You can easily fix such an issue by just signing out and then back into the OneDrive app. In this regard, you need to unlink your Mac from OneDrive and then link it back. 

These are the steps you should take to accomplish that: 

  1. From the Top Bar on your Mac, click the OneDrive app.
  2. Once launched, click on the gear icon, then select the Preferences option from the drop-down menu that appears.
  3. Navigate to the Account tab then click the Unlink this Mac button 
  4. Confirm this operation when prompted to do so

This operation will automatically unlike your Mac from the OneDrive account. Now that you are logged out of the app, you need to log back in to link your Mac once again, as explained below:

  1. Click on the Launchpad and open the Spotlight
  2. Type OneDrive into the Spotlight search bar and run the search. 
  3. Click on the OneDrive app icon from the search results to launch it.

Now try signing in using your Microsoft login credentials to see whether the issue has been resolved. 

Solution 4: Terminate All Running OneDrive Processes 

As mentioned earlier in this guide, the processes running in the background of your Mac may conflict with each other. If this happens, it may trigger the Microsoft OneDrive not signing in problem. If this happens to be the issue in your case, canceling the running OneDrive process will fix it. 

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On macOS, you can easily accomplish this using the Activity Monitor app—the equivalent of the Task Manager in Windows. Here is how you can use the Activity Monitor to terminate background processes on Mac:

Step 1: Open the Activity Monitor 

Navigate to the Finder on your Mac then click Applications. Next, navigate to the Utilities folder. Find the Activity Monitor in this file and double-click on it. Alternatively, you can open Spotlight from your Dock and run a search for “activity monitor” then select it from the search results to launch it. 

With the Activity Monitor open, scroll down the list of items to find any OneDrive processes. Specifically, you should look for both OneDrive and OneDrive Finder Integration processes on this list and click on each one of them to select it.

Note: If you have both the OneDrive Personal and OneDrive for Business app alternatives installed on your Mac, you may see two variations for each OneDrive process. 

Step 3: Stop the Selected OneDrive Processes 

Once you have selected all the processes you wish to stop, click on the X symbol and then select the Quit option. 

If some of the processes still appear to be running after this, select them from the list, click on the X symbol then select the Force Quit option instead. 

Solution 5: Delete Keychain Passwords for OneDrive 

Keychain Access is the application (app) that stores your passwords and other account information. If activated, this option will capture your logo details for various accounts and then autofill them on your subsequent log-ins. 

You may also use Keychain Access to manage the certificates issued by reputable organizations to validate websites and various web-based materials. While this may be a handy app, it could also trigger the OneDrive login problem. 

If you suspect this to be the problem on your Mac, you should expunge all the cached user information, including login credentials—especially for the OneDrive app. The following procedure will help you do just that: 

Step 1: Check Whether Keychain is Enabled on Your Mac 

If the iCloud Keychain is not enabled on your Mac, there is no way it could be the cause of the OneDrive can’t sign-in issue. This is why you should first check whether it is enabled before proceeding any further. 

To do this, click the Apple menu on your Mac. Next, select the System Settings, or System Preferences option—depending on the macOS version you are running. Scroll down to find the item named Keychain on the displayed list. 

If the checkbox adjacent to the Keychain heading is checked, iCloud Keychain is enabled on your Mac. Otherwise, it is not enabled, in which case this solution becomes irrelevant. 

Step 2: Run Keychain Access in the Utility Folder 

If the Keychain is enabled on your Mac, it could be triggering the sign-in problem on OneDrive. To fix the issue, click on the Launchpad then click on the Spotlight app on the Dock to launch it. Enter “Keychain Access” into the Spotlight search bar and then hit the Return key to run the search. 

This search should display multiple items that are related to the OneDrive app, including the Hockey SDK, cached credentials, and FinderSync.

Step 3: Delete Keychain Data for OneDrive 

 Control-click the Keychain entries and then click on the Delete (selected entry) option. Be sure to delete all the Keychain entries that are directly related to OneDrive. Once you are done, exit the Keychain Access. 

Note: These are some of the Keychain OneDrive entries you need to delete in the above-described step: 

  • Microsoft Office Identities Settings
  • Microsoft Office Identities Cache 2

You should also check whether you have any ADAL references in your Keychain. If you do, delete their respective entries as well. You may be required to enter verify your identity by entering your password before you can delete Keychain items. 

When prompted, click the  Delete button to confirm the operation. Once done, restart the Mac, launch the OneDrive app, and try signing in once again. 

Solution 6: Delete Office for Mac Activation Files 

Deleting such activation files has also been proven to fix the OneDrive not working problem on Mac. Beware though, doing this removes your Outlook data. As such, it is advisable to back up your data before deleting the files. 

Once you are ready, execute the following steps to remove Office activation files on your Mac: 

  1. Press the Command + Shift + G keys on your keyboard simultaneously. 
  2. Copy the following into the search field and run the search: 
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~/Library/Group Containers in the search field

Alternatively, you can just navigate to Library and then select Group Containers.

  1. Now find the following folders and drag them to the Trash to delete them:
  • UBF8T346G9.Office
  • UBF8T346G9.ms
  • UBF8T346G9.OfficeOsfWebHost

Finally, you need to restart the Mac, launch the OneDrive app, and check whether the sign-in problem had been fixed. 

Solution 7: Reset the OneDrive App on Mac 

Now to the more advanced fixes, resetting can resolve login as well as Sync issues on the OneDrive for Mac app. However, this solution will also clear all settings you had on the app. As such, the app needs to Performa a full sync after resetting. 

You also need to reconfigure your OneDrive app afresh following a reset. Even so, resetting OneDrive will not result in any data loss. Instead, resetting OneDrive for Mac will do the following: 

  • Delete the DAT file 
  • Saves the settings on the disk 
  • Saves application logs in your Mac’s registry

As soon as the app restarts, it will check the registry to ascertain whether the reset has been performed. Thereafter, it loads the settings and then re-build the DAT file. That said, how do you reset OneDrive on Mac?

  1. Lunch the OneDrive app from the Top Bar on your Mac 
  2. Click on the Gear icon and then select the Quit OneDrive option. 
  3. From the Launchpad, open Finder by clicking on its icon.
  4. From the left menu, click Applications and then select OneDrive
  5. Right-click then choose the Show Package Contents option. 
  6. Now you should navigate to Contents > Resources folder 
  7. Select the ResetOneDriveApp.command file.

This operation restores the OneDrive app to factory settings. Once done, you have to restart the app and set it up afresh. 

Notes: Be sure to use an updated version of the OneDrive app as some of the older versions do not have the reset command. 

When setting up the app, choose the same file location previously selected before the reset. This way, the app won’t have to download your files all over again. 

Solution 8: Ensure that the OneDrive Process is Running 

Under normal working conditions, your Mac should show the OneDrive cloud icons on the Top Bar. If you cannot see this icon on your Mac, then the OneDrive process is probably not running. In such a case, you first need to start this process before attempting to sign into OneDrive on Mac. 

Use the following procedure to start the OneDrive process on your Mac: 

  1. Press the Command and Space keys on your Mac at the same time to open Spotlight.
  2. Enter “Activity Monitor” into the Spotlight search bar then run the search. 
  3. Navigate to the CPU tab on the Activity Monitor 
  4. Under the Process column, select OneDrive. Alternatively, you could just search for OneDrive in Finder and then start it.

Solution 9: Reinstall OneDrive 

If the above-described solutions are not solving the OneDrive not signing in problem, try reinstalling the app. Like many other users, you probably are wondering How do I uninstall and reinstall OneDrive on Mac?

This is how it is done:

Step 1: Uninstall OneDrive 

Click the Launchpad and find OneDrive. Next, ling-press on the OneDrive icon until it starts to shake.

Now click on the X icon on the shaking OneDrive app. Finally, click on the blue Delete button to confirm this operation when prompted to do so. 

Step 2: Download and Install OneDrive 

Now that OneDrive is uninstalled, you need to download its installer and install it afresh, as explained below. Click on the App Store icon to open it. Type OneDrive into the App Store search bar—positioned on the top-right corner—and run the search. 

Find the OneDrive icon from the search results and click o it to select. Now click on the Get button just adjacent to the OneDrive icon. This button will now change into a green Install App button. 

Click the Install App button and follow on-screen prompts to complete the install.

Note: You may also download the OneDrive for Mac installer from the official download site. Once downloaded, open the downloads folder on your Mac, find the OneDrive.pkg file, and run it to install OneDrive. 

Final Verdict 

OneDrive is one of the leading cloud storage services for Mac and Windows computers. Though designed to deliver an intuitive user experience, you may encounter a problem when signing into the app. 

This problem can be triggered by an array of causes, as explained earlier in this guide. Depending on the cause and the macOS version, the problem can result in different error messages. 

Regardless of the error message you are getting, this guide will help you fix the Microsoft OneDrive not signing in problem. 

OneDrive is a great cloud storage option to save your files, especially if you use a Mac and a Windows PC. These steps will help you to resolve OneDrive sign-in issues on your Mac and get your files to sync between the Mac and your OneDrive account.

HowToiSolve Staff
HowToiSolve Staff

Jaysukh Patel is the founder of howtoisolve. Also self Professional Developer, Techno lover mainly for iPhone, iPad, iPod Touch and iOS, Jaysukh is one of responsible person in his family. Contact On: jaysukh.pharma@gmail.com [OR] admin@howtoisolve.com

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