Windows 10: Upgrades March 2019 have screwed up my PC and I cannot find a solution to changes

I was prompted to download 3 updates on 3/5/19 . Descriptions: 1)Adobe Flash Player for Windows 10 Version 1809 for 64 based systems. 2) 2019-02 security update for Adobe Flash Player for Windows 10 version 1809 for 64 based systems. 3) Cumulative update for .Net Framework 3.5 & 4.7.2 for Windows 10 Version 1809 for 64 based system.
On 3/12 was prompted again and I thought it was to fix the screwups. Again they downloaded #2 & #3 upgrades as described above.
Following the first time updates on 3/5 I lost all my "favorites" on Internet Explorer and all my personal files. On top of that I cannot access any of the programs on the start menu such as Paint, Notepad, Solitaire and none of my accessories. It also wiped out my "Office" file that I have a paid subscription for and I cannot access it neither. Strangely I don't have to enter my pin to access my PC like I always did before.

This all happened on 3/5 following the first 3 upgrades. I tried, on 3/31 to uninstall the upgrades through my "Settings". Immediately after that I was prompted to restart for changes to take effect. When I did it downloaded all 3 upgrades to my PC again. Every time I restart my PC now all my info such as favorites and personal documents, photo, etc get cleaned out.

When I tried to use the programs Microsoft offers through "Troubleshooting" (I downloaded the troubleshooter for update problems) I get a prompt that says I am missing an App to run it. It doesn't even tell me what the app is!!
FRUSTRATED!!!

:)

 

Microsoft March 2019 Security Updates

Security Update Guide > Release Notes

Release Notes

March 2019 Security Updates

Release Date: March 12, 2019

The March security release consists of security updates for the following software:

Adobe Flash Player

Internet Explorer

Microsoft Edge

Microsoft Windows

Microsoft Office and Microsoft Office SharePoint

ChakraCore

Team Foundation Server

Skype for Business

Visual Studio

NuGet

Please note the following information regarding the security updates:

A list of the latest servicing stack updates for each operating system can be found in ADV990001. This list will be updated whenever a new servicing stack update is released. It is important to install the latest servicing stack update.

Windows 10 updates are cumulative. The monthly security release includes all security fixes for vulnerabilities that affect Windows 10, in addition to non-security updates. The updates are available via the Microsoft Update Catalog.

Updates for Windows RT 8.1 and Microsoft Office RT software are only available via Windows Update.

For information on lifecycle and support dates for Windows 10 operating systems, please see Windows Lifecycle Facts Sheet.

In addition to security changes for the vulnerabilities, updates include defense-in-depth updates to help improve security-related features.

The following CVEs have FAQs with additional information and may include * further steps to take after installing the updates.

ADV190008

ADV190010 *

ADV990001

CVE-2019-0614

CVE-2019-0702

CVE-2019-0703

CVE-2019-0704

CVE-2019-0755

CVE-2019-0759

CVE-2019-0767

CVE-2019-0774

CVE-2019-0775

CVE-2019-0776

CVE-2019-0782

Known Issues

KB Article Applies To

4489878 Windows 7 Service Pack 1, Windows Server 2008 R2 Service Pack 1 (Monthly Rollup)

4489881 Windows 8.1, Windows Server 2012 R2 (Monthly Rollup)

4489882 Windows 10 version 1607, Windows Server 2016

4489883 Windows 8.1, Windows Server 2012 R2 (Security-only update)

4489884 Windows Server 2012 (Security-only update)

4489885 Windows 7 Service Pack 1, Windows Server 2008 R2 Service Pack 1 (Security-only update)

4489891 Windows Server 2012 (Monthly Rollup)

4489899 Windows 10 version 1809, Windows Server 2019

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Office 2019

Only supported on Win10. Sorry, 8.1 users, only 4 years old, gotta go.

Microsoft Office 2019 will only work on Windows 10

https://blogs.technet.microsoft.com...-to-office-and-windows-servicing-and-support/

Spoiler Office 2019
Last year at Ignite, we announced Office 2019 – the next perpetual version of Office that includes apps (including Word, Excel, PowerPoint, and Outlook, and Skype for Business) and servers (including Exchange, SharePoint, and Skype for Business). Today we’re pleased to share the following updates:

• Office 2019 will ship in H2 of 2018. Previews of the new apps and servers will start shipping in the second quarter of 2018.
• Office 2019 apps will be supported on:
  • Any supported Windows 10 SAC release
  • Windows 10 Enterprise LTSC 2018
  • The next LTSC release of Windows Server
• The Office 2019 client apps will be released with Click-to-Run installation technology only. We will not provide MSI as a deployment methodology for Office 2019 clients. We will continue to provide MSI for Office Server products.

 

March 2019 update undoing changes loop help!

Hel please new to this my laptop is in a continuous loop of a blue black screen saying undoing changes it goes on for hours it won't stop after the March 2019 update can't get into my laptop at all. Please any help appreciated.