DPAPI/OSCrypt bug and similar ...'s%20reply%20on%20October%2012%2C%202020%20('t%20have%20any%20news%20to%20share%20yet%20about%20a%20fix%2C%20but%20I%20will%20let%20you%20know%20if%20I%20hear%20otherwise!%3C%2FP%3E%0A%3CP%3E%26nbsp%3B%3C%2FP%3E%0A%3CP%3E%3CI%3EFawkes%20(they%2Fthem)%3CBR%20%2F%3EProgram%20Manager%20%26amp%3B%20Community%20Manager%20-%20Microsoft%20Edge%3CI%3E%3C%2FI%3E%3C%2FI%3E%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22li!
Regular Contributor

@MissyQ @Deleted @ericlaw 


Any news of fixes for the faults that cause loss of log-in data, e.g. when a scheduled task uses S4U or when Hosted app data is set to clear on close? 

1069383 - TokenService fails to load after CryptUnprotectData failure, causing cookies and sync to reset - chromium 

Thread "Starting this morning, Edge does not remember logins to any website" page 1: Missy Quarry's reply on October 12, 2020 (

Are these two related?



5 Replies

@Noel Burgess Thanks for reaching out. I asked someone from the team to look into this, and they agreed that those do seem related. I don't have any news to share yet about a fix, but I will let you know if I hear otherwise!


Fawkes (they/them)
Program Manager & Community Manager - Microsoft Edge

@Deleted wrote:

I will let you know if I hear otherwise!

Thanks 🙇‍

best response confirmed by Noel Burgess (Regular Contributor)
Microsoft Verified Best Answer

@Noel Burgess These two issues are effectively unrelated.


The DPAPI+S4U Issue ( causes loss of Edge's encryption key that protects cookies and credentials. This issue will require a monthly update to Windows 10 to fix; we do not have a date for that fix to announce.


The Hosted App Data Clear-on-Exit-causes-Cookie-loss issue was a bug in our code. As I understand it, it has already been fixed in Canary.



Thanks! I'll pass the message on.



One new red herring data point: a user posted this at Answers, referring to 'missing log-in' sufferers:

I am wondering how many of these folks are using System Mechanic Ultimate Defense from Iolo.  I am, but with Private Guardian, which is new, it deletes saved passwords from my pc.  Turned off and passwords are not deleted.