By Kelsey twitter / Last Updated June 15, 2021


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OneDrive Upload Failed: Sign in Required!

“OneDrive Upload Failed: Sign in required. Your changes were saved but could not be uploaded because you are not signed in to the server. Every time I have tried to save an Excel file or Word document in the last month I get this message and apparently I can't save to my one drive through the application interface. Why is OneDrive not working? Help!”

OneDrive Upload Failed Sign in required

Why is OneDrive Not Uploading?

OneDrive is an Internet-based storage platform. Microsoft users can use it directly on the device and use it as a shared cloud hard drive. Whenever you want to save a file in all Office apps or save as a new copy, the program sends a request to log in with a Microsoft account for each file. After entering the user name and password credentials, the following error message may be displayed:

Upload Failed: You are required to sign in to upload your changes to this location.

OneDrive Upload Failed You are required to sign in

Upload Failed: Locked by another user.

Onedrive Upload Failed Locked by another user

Upload Failed: Permissions issue.

OneDrive Upload Failed Permission issue

Upload Blocked: We couldn’t verify you have the necessary permissions to upload the file.

OneDrive Upload Blocked

OneDrive upload failed: There is a problem with the website's security certificate.

There is a problem with this websites security certificate

The above are some common situations that OneDrive cannot upload files normally. Several reasons may cause them to happen:

  • The version of the running Office application is too old.

  • During file transfer, the connection to OneDrive was lost.

  • You are not logged into your OneDrive account on the app.

  • You do not have permission to access the file or upload the file to the selected folder.

How to Fix OneDrive Upload Failed? (8 Fixes)

Usually, it is some small details that make OneDrive not uploading files. Try the methods provided here to fix the problem.

Method 1. Re-provide account credentials

In the process of uploading files to OneDrive, if you are not logged in to your account, or your account is disconnected from OneDrive, you cannot continue the next operation. First, make sure you have logged in to your account. If you have logged in to OneDrive, try the following steps to re-provide account credentials to Microsoft Office:

Step 1. In any Office app, select File on the menu bar, and click Account. Under User Information, sign out all accounts. Then close all Office applications.

Sign Out Account

Step 2. Navigate to Control Panel > User Accounts > Credential Manager, Click Windows Credentials, expand Office credentials under Generic Credentials, and click Remove link.

Office OneDrive Credentials

Step 3. Then go to the Office application and log in.

Method 2. Delete cache

Whenever you use Office to save a file, a copy will be generated and stored in the cache folder. When a problem occurs, it can be considered that the cache fills up and the cache needs to be cleared.

Step 1. In the Start menu, search for Microsoft Office tools, click on it, and select Office Upload Center.

Office Upload Center

Step 2. Click Settings, under Cache Settings, check the box as shown in the figure, and then click Delete cached files.

Delete cached files

Method 3. Install the latest Windows updates

Unable upload to OneDrive has been fixed in version 16.0.7870.2031 or higher. If you are running a lower version, you can manually update to fix the problem immediately.

Step 1. Open the Settings on the computer, click Update & Security> Windows Update, and then click the Check for updates button.

Windows Update

Step 2. Open any Office application, then click File > Account > Update Options > Update Now.

Office Update

Method 4. Check the size of the file

If you do not follow the upload size limit of OneDrive files, it may cause that OneDrive failed to upload. What is the maximum file size to upload to OneDrive? You need to follow the following file upload principles.

  • If the file size you are trying to upload exceeds 20 GB, the process will fail.

  • If you use the latest version of Microsoft Edge or other popular web browsers, the upper limit for uploading files to OneDrive is 100GB.

  • If you are using an old browser, you can only upload files up to 300 MB.

  • OneNote notebooks saved in OneDrive are limited to 2GB.


You can upload files up to 100GB using the OneDrive app. If you log in with your work or school account, the maximum file size you can upload is 15GB. For uploading large files to OneDrive, it is recommended that you add files through the OneDrive desktop application instead of using the Upload button on the website.

Method 5. Check if the file contains restricted characters

If the file name contains prohibited characters, the file cannot be uploaded to OneDrive. The file name cannot start or end with space, end with a period, and can not contain any of the following characters: / \ <>: *"?|

The following names are not allowed for files or folders: AUX, PRN, NUL, CON, COM0, COM1, COM2, COM3, COM4, COM5, COM6, COM7, COM8, COM9, LPT0, LPT1, LPT2, LPT3, LPT4, LPT5, LPT6, LPT7, LPT8, LPT9.

If your file is included in the above situation, you need to change its name and upload it again.

Method 6. Check the file path

OneDrive upload blocked maybe because the full path of the file is too long. The path must be less than 442 characters. You can shorten the file name or the name of the subfolder in OneDrive, or select the subfolder of the upper level to upload.

Method 7. Check the file permission

If the file is being opened from another program. You need to save all changes to the file and close the program, then try to upload the file again.

If you try to upload a file to OneDrive from a removable media device such as a CD or USB flash drive, the file may not be available. You should make sure that the removable media device is properly connected to the computer, then try to upload the file again.

Method 8. Check storage space of account

If the size of the file you want to upload exceeds the available storage space in your OneDrive account, the upload cannot be successful. You can go to the storage page to check the remaining space.

2 Bonus tips of OneDrive Upload Failed Issue

Tip 1. Backup OneDrive in advance for data security

When there is a problem with OneDrive, such as OneDrive isn't connected, OneDrive not running, to avoid being unable to access the stored data or losing data, you can back up the files in OneDrive in advance.

You can use the free cloud backup service CBackup to back up files in OneDrive directly to another cloud drive. The steps are as follows:

1. Create a CBackup account freely and get started to sign in.

Sign Up

2. Add and authorize your OneDrive account under the My Storage tab. Then use the same method to authorize another cloud storage account.

Add OneDrive

3. Click the Backup Tasks tab at the top, then click New Task to create a backup task.

Create Task

4. Click the Add Source button and the Add Destination button to add clouds as the transfer source and backup destination.

Add Source Destination

5. After selecting, click Start Backup to start the task.

Migrate OneDrive to Google Drive

Tip 2. Turn to a OneDrive alternative to avoid problems thoroughly

Many users report different errors of OneDrive every day, and sometimes you cannot successfully fix these problems. If you are tired of dealing with these problems, you can directly turn to a more stable and safe professional cloud backup service.

CBackup provides you with professional backup services, designed for Windows cloud backup. You can back up your PC files to your OneDrive account through CBackup for free and the larger CBackup Cloud it provides you. The program is more stable and provides a larger backup space. You can download it and try it to see if it meets your requirements.

Sign In


To solve the OneDrive upload failed issue, you can try the above methods that suit you according to the possible causes of the problem listed in the article. Also, as a OneDrive user, if you want to ensure the safety of the stored data, you may want to backup OneDrive directly to another cloud drive via CBackup.