What’s causing the “Upload Blocked. you are required to sign-in” error?
We investigated this particular issue by looking at various user reports and at the several repair strategies that users have used to fix this problem. As it turns out, several different scenarios will produce this “Upload Blocked” error. Here’s a shortlist of culprits that might be responsible: If you’re currently looking for ways to resolve the “Upload Blocked. You are required to sign in” pop-up, this article will provide you with several verified troubleshooting strategies. Down below, you’ll find a collection of potential fixes that other users in a similar situation have successfully used to resolve the issue for good. If you want to remain as efficient as possible, we encourage you to follow the potential fixes below in the same order that we arrange them in (by severity and efficiency). Eventually, you will discover a method that will fix the problem in your particular scenario. Let’s begin!
Method 1: Install every pending Windows update
As it turns out, the “Upload Blocked. You are required to sign in” pop-up can also appear due to a OneDrive glitch that was since patched by Microsoft. However, if your machine is not up to date, you won’t be able to take advantage of the hotfix. Several users that we’re also affected by this glitch have managed to resolve the problem by installing every pending Windows Update. Since OneDrive is developed by Microsoft Corp., the updating of the app is handled by WU (Windows Update). Here’s a quick guide on installing every Windows update to resolve the “Upload Blocked. You are required to sign in” pop-up error: If the same “Upload Blocked. You are required to sign in” pop-up error is still occurring, move down to the next method below.
Method 2: Using Office to Sync Office files
This is by far the most common fix for this particular issue. As a lot of affected users have reported, they were able to resolve the issue by configuring OneDrive to rely on Office when having to sync files created with Word, Excel, Powerpoint, etc. This small adjustment was confirmed to be effective by a lot of users, with the condition to have a recent OneDrive version on Windows 10. After doing this modification and restarting the computer, most affected users have reported that pop-up was no longer occurring whenever they tried to sync a file hosted on OneDrive. Here’s a quick guide with what you need to do to fix the “Upload Blocked. You are required to sign in” error: If you’re still seeing the same “Upload Blocked. You are required to sign-in” error, move down to the next method below.
Method 3: Removing the Office Credentials via Credential Manager
Other users that were also struggling to resolve the issue have reported that the annoying “Upload Blocked. You are required to sign-in” pop-up was no longer occurring after they used Credential Manager to remove any Microsoft Office Data. After doing so and restarting their computer, they were prompted to complete the sign-in process once again. But after they’ve done so, the pop-up stopped appearing. This suggests that the issue can very well be caused by an instance of corrupted credentials stored by the Credential Manager. Here’s a quick guide on deleting your Credential Manager records to remove the inconsistency that is producing the “Upload Blocked. You are required to sign-in” error: If the “Upload Blocked. You are required to sign-in” pop up is persisting, move down to the next method below.
Method 4: Unlinking the OneDrive account
Judging by several different user reports, this problem can also surface in instances where the OneDrive account that is currently linked with the PC currently contains some glitched data. In cases like this, unlinking the account before adding it again should resolve the issue in the vast majority of cases. Several users who were also encountering this problem have confirmed that this method allowed them to get rid of the “Upload Blocked. You are required to sign in” pop-up error. Here’s a quick guide with step-by-step instructions on unlinking your OneDrive account from your PC and adding it again: If the same issue is still occurring, move down to the next method below.
Method 5: Deleting the cached files of Microsoft Office Upload Center
Another fix that will work in instances where you’re dealing with corruption is to clear the cached files belonging to the Office Upload Center. As it turns out, the issue can also arise in instances where the Windows Update Center is stuck in a limbo state when trying to upload an Office application that is involved in a syncing process with OneDrive. Several users that were also struggling to resolve this issue have managed to do so by accessing the Microsoft Office Upload Center Settings and deleting the cached data files. After doing so and restarting the computer, some affected users have reported that the “Upload Blocked. You are required to sign in” pop-up error was completely resolved. Here’s a quick guide on deleting the Cached data belonging to the Microsoft Office Upload center:
Method 6: Deleting the Identities keys via Registry Editor
As it turns out, the “Upload Blocked. You are required to sign in” pop-up error can also occur due to an inconsistency having to do with a corrupted Identity value. This problem is quite common among computers that are joined with a domain network. Some users encountering a similar problem have managed to fix the issue by navigating to the corrupted key manually via Registry Editor and deleting them to eliminate the problem. After they’ve done this and restarted the computer, the issue was resolved the majority of users encountering this problem. Here’s a quick guide on deleting the Identities keys via Registry editor to resolve the “Upload Blocked. You are required to sign in” pop-up error:
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