Windows 10: Explorer.exe Application Error Crash Loop After Every Login

My computer has been unable to log on without a 5 - 10 minute explorer.exe crash loop. I am able to open the task manager during this loop and see that either one of my two storage drives will be at 100% usage for the entire time. If one or both of the drives is disconnected, the error does not occur. However, the problem can not be isolated to one drive specifically. It is only when they both are plugged in and powered that the crash loop occurs. Additionally, the internet usage monitor spikes during this time, but when startup and login is run with the computer disconnected from the internet, the problem persists. The CPU and RAM do not read much above idle during this time.

I've tried everything and am out of ideas. I've run every check disk, scan disk, system file checker, and all the other normal scans for viruses, malware, and disk errors. All of my drivers are up to date, and I've even done a refresh install of Widows 10, but it still happens every single boot. The only consistent fix is unplugging one or both of my storage drives before booting, but that is not a feasible long term solution.

The event viewer points the application error to ucrtbase.dll. I've tried removing/replacing this .dll and am locked out from doing it because it's always "in use" - even in safe mode.

Here's one of the several thousand identical error reports:

Log Name: Application
Source: Application Error
Date: 12/7/2020 11:34:44
Event ID: 1000
Task Category: 100
Level: Error
Keywords: Classic
User: N/A
Computer:
Description:
Faulting application name: explorer.exe, version: 10.0.19041.662, time stamp: 0x996782f8
Faulting module name: ucrtbase.dll, version: 10.0.19041.546, time stamp: 0x43cbc11d
Exception code: 0xc0000409
Fault offset: 0x000000000007287e
Faulting process id: 0x2d0
Faulting application start time: 0x01d6ccbf403e882a
Faulting application path: C:\WINDOWS\explorer.exe
Faulting module path: C:\WINDOWS\System32\ucrtbase.dll
Report Id: 5de25f80-77b9-4d87-9e04-91c2a58da87b
Faulting package full name:
Faulting package-relative application ID:
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Application Error" />
<EventID Qualifiers="0">1000</EventID>
<Version>0</Version>
<Level>2</Level>
<Task>100</Task>
<Opcode>0</Opcode>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2020-12-07T17:34:44.5119178Z" />
<EventRecordID>53138</EventRecordID>
<Correlation />
<Execution ProcessID="0" ThreadID="0" />
<Channel>Application</Channel>
<Computer></Computer>
<Security />
</System>
<EventData>
<Data>explorer.exe</Data>
<Data>10.0.19041.662</Data>
<Data>996782f8</Data>
<Data>ucrtbase.dll</Data>
<Data>10.0.19041.546</Data>
<Data>43cbc11d</Data>
<Data>c0000409</Data>
<Data>000000000007287e</Data>
<Data>2d0</Data>
<Data>01d6ccbf403e882a</Data>
<Data>C:\WINDOWS\explorer.exe</Data>
<Data>C:\WINDOWS\System32\ucrtbase.dll</Data>
<Data>5de25f80-77b9-4d87-9e04-91c2a58da87b</Data>
<Data>
</Data>
<Data>
</Data>
</EventData>
</Event>

Here's my system:

Processor IntelR CoreTM i7-4790K CPU @ 4.00GHz 4.00 GHz
Installed RAM 16.0 GB
GPU GTX 970
Device ID 2DE455C8-C672-43A8-85CA-38C27DBC3149
Product ID 00326-10000-00000-AA071
System type 64-bit operating system, x64-based processor
Pen and touch No pen or touch input is available for this display

:)

 

Stuck in explorer crash loop

Hello!

Today, out of nowhere, I started having problems with explorer. When right-clicking on the desktop (or icons on it) explorer would crash and restart itself a few seconds later (icons disappear, taskbar disappears, etc...).

I looked for a solution online and many people suggested installing ShellExView and disabling everything non-Microsoft and then re-enabling them one by one to find the culprit. Actually, disabling every non-Microsoft entry made things much worse for me, as explorer would go into a crash loop (crash, restart, crash, and so on...). For some reason I though updating Windows would help me fix everything, but after applying updates and restarting I noticed nothing had changed and now I'm stuck in the loop right after login (I basically cannot do anything except launch stuff through the task manager).

I'm currently in safe mode, and everything works fine here, but I have no idea how to fix the problem. I tried reverting to the previous build, it failed (generic error, don't really remember it). I tried restoring to a previous restore point, it failed. Even resetting failed. I just guess I'll have to reinstall w10 from scratch, I just wanted to know if there was something else to try out before doing that.

Sorry for the long post! (or maybe it looks long in safe mode because of the low resolution *Biggrin )

 

Explorer.EXE error after login in.

Hi, I performed an appropriate search for you and it suggested:
Fix Explorer.exe Error with Yellow Exclamation at Startup

 

Explorer exe application error

Thank you for your help, but im sorry the problem still there, after i did the 2nd step, the scan shows if there are corrupted files, but it can't fix it and only logged the result, and the memory diagnostics says there are no error.

Also, there is a notification says

"explorer.exe - system warning

Unknown hard error"