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December 30, 2025
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We had the issue where Outlook 2016 kept prompting for a password for an Office 365 user whose laptop was connected to their Office 365 account fix MFA prompts not working using Windows 10 Pro. The repeated issue logging in started after I enabled the modern authentication in the Office 365 administration panel. The user could use the Windows mail and calendar apps but Outlook wouldn’t connect and kept prompting for a password. Checking the Account in Word showed the correct authentication and subscription. In the instances that this occurs the effected user is not new to MFA but has been running it for at least months.
Microsoft 365 Login Loop because of MFA
If this box is greyed out or disabled then you need to reset the Windows Credential Manager first. @Microsoft, given the level of attention the community has given this issue, I hope you come up with an update soon. We have been experiencing the exact same issue for months now. I experience the issue myself as well, every once in a while.
I have a valid MS 365 subscription that includes 5 device licenses.Hi, my office 365 account used to work with my desktop apps, I have confirmed with my admin system twice already that I have the appropriate license and everything is enabled but i keep getting stuck in this loop.The user had Office 2015 and Office 2016 credentials and Teams credentials that we deleted.This is now the 2nd machine that presents the same issue.Tried CC cleaner to clean up registry and everything -- also keep in mind this is a fairly recent reinstall of windows.I created a new Outlook profile, and then the old one started working.On the main machine where I have been using the suite, now my account is deactivated and if I try to authenticate, it looks like it works but then get the "Fix", "Authenticate", "Activate" or "Resolve" buttons, all of which do nothing.I’ve seen this happen when the time and or date is wrong on the machine.
Fix constant sign-in prompt for Microsoft
I created a new Outlook profile, and then the FixTechGuide mailbox repair steps old one started working. I wonder if the compuer cached a new logon token or something that the old Outlook profile could use. Also, during the new profile creation, I was only prompted for a password and not for MFA. When we opened the old, existing profile it didn’t ask for ANY authentication, it just started working.
Outlook stuck in an MFA loop
The bad thing is this account was not registered with Microsoft Authenticator, so I couldn't see any codes in the authenticator. And there were no other login options, and I was stuck in a login loop. This is now the 2nd machine that presents the same issue. I have a valid MS 365 subscription that includes 5 device licenses.
Office 365 desktop apps infinite authentication loop -- asking to reintroduce details forever / activate office
We are looking at using conditional access policies where a user with a Domain joined PC is not prompted for MFA. Right now we have it set to prompt when a user is not on any of our corporate networks or they are using a mobile device. The user had Office 2015 and Office 2016 credentials and Teams credentials that we deleted. We checked with Word that the account was connected–it how to fix Outlook not opening today was and the we opened Outlook and it immediately connected. We too have been seeing this more and more, all W10 on O365, although we use Okta as our MFA.
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December 30, 2025
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Besides that, it also highlighted the importance of OST conversion nowadays & recommended the best-automated way for conversion. fixtechguide login Issue Guide There are several workarounds for OST to PST conversion tool that can be helpful only with Outlook availability. Moreover, they do not provide complete control over the process & may disturb data integrity. Adhered with specific email accounts and profiles, limiting its accessibility across platforms. For users with Microsoft Outlook 2000, 2002, 2003, you'll open the Scnost.exe tool using the instruction below. Lunch Repairit for Email and click "Select File" to add the corrupted PST/OST files.
Repair or Convert OST File in PST Using Professional Software:
However, when using electronic files such as PST, you’ll need to keep your files in check to ensure that they aren’t corrupt.For users with Microsoft Outlook 2007, 2010, 2013, 2016, 2019, open Scanpst using the instructions below.In scenarios such as the unexceptional crash of server because of malicious software, virus attack, power failure etc., converting OST to PST file format relieves.To create a new Outlook Data File, go to Create an Outlook Data File.The Lost and Found folder contains any folders and items recovered by the repair tool that Outlook can't place in their original structure.
Used for archiving, backup, & create a separate mailbox copy. FixTechGuide mailbox repair steps During the repair, as mentioned, it will more than likely appear SCANPST.EXE is unresponsive (i checked in task manager and it showed x2 instances of the program both "not responding"). A. Yes, you can delete an OST file, but make sure you have a backup of that OST file, or its replica is connected with the Exchange Server. For users with Microsoft Outlook 2007, 2010, 2013, 2016, 2019, open Scanpst using the instructions below. Notwithstanding, the POP (or POP3) still has certain advantages –depending on the user. They are independent of the server and don’t get synced automatically.
Repair an outlook .PST or.OST file
There is no doubt that PST file is a much better file format than OST files, which is why several users convert OST to PST format. For this i have mind-blowing software which understands your problems and makes able to read OST file data into PST file without any type of issue. OST to PST is the superb option for your corrupted OST file data many of users self-tested this application and fully satisfied by its services. I also used this Softknoll Ost to Pst Converter tool that i suggests this application. So, you can also use its services for recovery of your corrupted OST file data. The PST File stores local copies of your calendar events, messages, task data, contacts, etc.
OST to PST Conversion: Best Advanced Option!
I’ve had it tell me it repaired files, but then I open them in Outlook and they are empty. In typical MS fashion, the tool can fail, but won’t tell you until the very end…after you’ve run it for an hour. Step 3 Lastly, you'll tick the ’Make a backup of scanned file before repairing’ checkbox and click Repair to fix the corrupted Outlook OST file handily. PST File Format is used for POP Accounts, while the OST file format is used for IMAP Accounts. The outlook is extremely popular all around the world because of its strong functions. And we have frequently seen Outlook OST and PST files in our daily work, but don't even give a thought to the difference between Outlook OST and PST.
How to repair Microsoft Outlook .pst and .ost data files?
The Inbox Repair tool creates a backup file with the same name as the original, but with a .bak extension, and saves it in the same folder. There may be items in the backup file that you might be able to recover that the Inbox Repair tool couldn't. You can use the Inbox Repair tool (SCANPST.EXE) to diagnose and repair errors in your Outlook data file. The Inbox Repair tool checks the Outlook data files on your computer to see if they're in good shape. Although connection status shows disconnected both file formats serve storage purposes, they differ significantly on the root level. Read the following section to get the complete knowledge about PST and OST differences.
Step 2 Click on the Browse button and select the corrupted OST file you're looking to repair. After you've completed the first phase above, follow the straightforward step-by-step instructions to repair the OST file. Outlook doesn’t support the import & export of OST files. Less susceptible to corruption or damage, as it is attached to the Exchange server. The changes that are made offline get automatically synced when you are connected to the internet.
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December 30, 2025
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Mark @accountprotection.microsoft.com as a trusted sender to receive your verification code in your inbox. Randomly still getting the 'can't find this page' error upon first connection.. When you close it and reconnect, it then goes through as expected. It's also intermittent, sometimes goes in first time round.. Other times get the error, close the window, reconnect then it works.
Try going here and looking a the specific users, check if they are set to disabled.Oddly enough when I retried them today, it prompted for 2fa.Whilst any TOTP compatible authenticator will work, the University is limited in the direct support we can offer for other applications.You can check their sign-in logs in Azure AD to see what’s going on during their login attempts.At first logon, i was prompted for MFA and connected successfully.Log off, log back in again and does not prompt for MFA anymore.When you see a message asking you to make sure you can receive a verification code, verify or add new security info.
I can't sign in after multiple attempts
When you see a message asking you to make sure you can receive a verification code, verify or add new security info. You can skip it for 24 hours at a time, but after seven days from the first notice you'll guide to Office 365 sign-in errors have to verify or add new security info before you can sign in again. In those 2 times we have user sign back in via OWA first then Outlook, and also the reverse order. Microsoft works to protect you, your accounts, and our services by assessing the trustworthiness and credibility of every sign-in, sign-up, or customer interaction. If your actions trigger alerts or deviate significantly from your typical patterns, we might interpret it as potentially risky behavior, leading to temporary block where we won't send codes.
Further help and support
A vast community of Microsoft Office365 users that are working together to support the product and others. At first logon, i was prompted for MFA online Outlook email repair utility and connected successfully. If none of the recommendations on this page have resolved the problem, you can contact the IT Service Desk for support.
I've lost access to my security info
Read through the list of the most common causes, and see if any of them apply to you. Security verification messages are sent in the language of your account when the security info email/phone number was added. We won't ask you to verify your security info every time you sign in. Occasionally, we might ask you to check it again—for example, if you haven't signed in for a long while.
Troubleshooting common problems with Multi-Factor Authentication (MFA)
The error could be caused by malicious activity, misconfigured MFA settings, or other factors. To investigate further, ask an IT administrator to look at the Microsoft Entra sign-in logs. I’d start by checking if those users are somehow excluded from security defaults or if there’s a conditional access repair corrupted OST in Outlook policy overriding them. Also, make sure they’re using apps that support 2FA—older clients sometimes skip the prompt.
What Our Users Say
The use of TOTP establishes a shared secret at setup that is then used to generate time-based codes. Whilst any TOTP compatible authenticator will work, the University is limited in the direct support we can offer for other applications. Microsoft Entra multifactor authentication detects unusual activity like repeated sign-in attempts, and may prevent additional attempts to counter security threats. If you've mistakenly made many sign-in attempts, wait until you can try again, or use a different MFA method for sign-in. If you suspect someone else is trying to access your account, contact your IT administrator.
Question activity
We understand this can be frustrating and disruptive, but here are some of the reasons behind blocks, and guidance on how to overcome them. Will log a tac also as not finding many docs on this issue on pan site atm. However i fear this might only be for BYOD / third parties and not applicable to Azure AD joined devices ie company laptops..
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December 30, 2025
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A message notification saying- "all tests completed successfully" will appear. If the test is failed, again check the setting if you have entered them correctly. You will be having these values as shown in the screen above for incoming server as 143, outgoing server as 587, STARTTLS for- use the following type of encrypted connection. After you have finished verifying the above settings, you need to click on the more settings option. If the internet connection problem persists, look at the troubleshoot network connectivity problems in your particular browser in which you are browsing.
Run MAPI Repair Tool
Sometimes any kind of Outlook 2016 sends receive error or Outlook 365 send receive error may occur when your antivirus software installed is inclusive of the email scanning feature. You have to do some supplementary configurations for using Outlook or Outlook express with antivirus software. E.g. you need to configure the Kaspersky antivirus office plug-in to work with Outlook or Outlook express. Download and FixTechGuide email error solutions run the official Microsoft Support and Recovery Assistant (SaRA). It automatically diagnoses and repairs many Office 365 problems — including search indexing and sync issues. In this guide, you’ll learn how to fix Office 365 search not working after update using step-by-step methods verified to restore indexing and search functionality.
💡 Step 5: Clear Outlook Cache and Reconnect Mailbox
Before jumping out to the solutions, first, let us have a glance at the kinds of error you may encounter or if it is the same error you Outlook OST vs PST repair are stuck with. 6) Try re-registering the DLL Library files which are used by Outlook express. What I do know is that early versions caused issues just by being installed for some customers. If I understand correctly, the issue works sometimes and fails at other times.
Mobile AI Photo Repair
This ensures that the system-wide search index service is active and linked to Office 365 apps. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. Now, if the window of test settings is still open, close it to continue further.
That's really all there is for Gmail; your settings just need to match theirs as long as no firewall is blocking the connection on your side.Now, if the window of test settings is still open, close it to continue further.For resolving this issue, you need to run the MAPI repair tool which is a (Fixmapi.exe).You must initially make sure of the internet connection; you need to follow these steps below to do so.After following these steps you would be able to see the account and select the change button and able to view the settings window described above in step 3.If the test is failed, again check the setting if you have entered them correctly.
📞 Need Quick Help?
Please make a note that the steps required to follow for creating a new personal folder .pst file may vary according to the version of Outlook you are using. If one SMTP address in a distribution list is corrupted or incorrectly formed, error 0x b can occur. You should examine all email addresses in the distribution list to make sure that they are correct. Additionally, you can send individual test email messages to each distribution list member to identify invalid email addresses.
Whether it’s Outlook, Word, or Excel, these fixes ensure your data is re-indexed, searchable, and synced properly. After following these steps you would be able to see the account and select the change button and able to view the settings window described above in step 3. If you found the Mapi32.dll file damaged or corrupt, there's a probability that you can receive the error following error message when you try sending or receive messages in Outlook.
For advanced troubleshooting, FixTechGuide offers remote support to restore performance and indexing accuracy for Outlook and other Office apps. For ensuring that your currently existing email profile is working correctly on Outlook, you need to create a new email profile. After you have finished running your inbox repair tool, you can recover your repaired items by starting the Outlook. Move your repaired items into a new personal folder with resolve Outlook not sending emails fast a .pst file entry in your profile. Keeping in mind the above-described errors related to the Outlook send and receive an error, we have come up with 12 tips to fix Outlook error while preparing to send a sharing message. Locate your .pst file in the inbox repair tool by typing the name and path of your file or browse your .pst file and click on start.
That's really all there is for Gmail; your settings just need to match theirs as long as no firewall is blocking the connection on your side.
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December 28, 2025
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The Inbox Repair Outlook Stuck on Synchronizing Folders tool or ScanPST.exe is not a convenient way because of multiple restrictions. Outlook Data files (.pst) can be corrupted due to numerous reasons as stated above. However, with the right tools and techniques, it can be resolved.
Common Causes That Led To PST File Corruption
In addition, it turns into leading Outlook errors, which might affect overall productivity and efficiency and can increase downtime.The folders might just be empty and redundant, or they might contain recovered data that Outlook couldn’t place in its original locations.Using the software, you can repair and rebuild a PST file of any size, irrespective of the cause of corruption.With a background in computer science and a passion for writing, I thrive to deliver complex technical content in simple layman terms.It also offers a filter option; users can filter items using different criteria when they want to have only the desired items to process.If you’ve tried Outlook’s recovery tool with no luck, it might be time to consider something more powerful.
Before implementing this method to fix Outlook PST files, read its limitations for more insight. However, deleting the PST file isn’t ideal as you may lose some mailbox items. Here are some methods you can follow to rebuild the Outlook PST file. resolve Outlook not sending emails fast If you can't start the Inbox Repair tool automatically or manually, you may try to repair your Office application. Use the Browse button to choose the Outlook Data File (.pst) you need to scan — find the file based on the locations in step 2 above.
Automatically start the Inbox Repair tool
If you’re having trouble using the Inbox Repair tool, you can try repairing your Outlook program as a whole. The steps involved in this might differ depending on what version of Outlook or Microsoft Office you’re using. If you want to fix PST files using this tool, make sure to have a proper backup of the Outlook PST before processing. This utility is not the professionals’ recommendation, work offline mode stuck as it comes with a lot of drawbacks.
Follow the step-by-step guide to fix the Corrupt PST file:
These Outlook data (PST) files store user’s data, including email messages, calendars, tasks, journals, etc. After you run the Inbox Repair tool, you can start Outlook and recover repaired items. Optionally, you can try to recover additional repaired items from the backup personal folder.
What to do when you can’t repair the .pst file with SCANPST.EXE
You can try any of the methods listed above to rebuild the PST file. Using the software, you can repair and rebuild a PST file of any size, irrespective of the cause of corruption. Unlike the SCANPST tool, it won’t crash halfway if the corruption level is high or file is large. ScanPST mostly validates and corrects errors in the internal data structures of a .pst file. Therefore, structures such as BTrees and reference counts, are checked and repaired as necessary. These low-level objects have no knowledge of the upper-level structures, such as messages, calendar items, and so on, that are built upon them.
This blog specified four different manual ways to repair Outlook data files. Therefore, using a professional tool is an effective solution. The best solution to avoid manual challenges and complete this task effectively is the Shoviv Outlook PST Repair Tool.
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