Windows 10: Bitlocker key showing invalid

Bitlocker key showing invalid.

:)

 

Bitlocker Key Issue Date Invalid??

Hi,

I recently had to have my laptop's motherboard replaced and I had to use the Bitlocker Key to unlock the system. I noticed that the "Key Issue Date" was listed as "Invalid Date".

I was wondering if that will affect the validity of the key? And is there any way of rectifying that issue?

 

Invalid Date for Bitlocker Recovery Keys in Microsoft Account.

This is a known bug, which Microsoft shows no inclination to fix.
I have a number of Bitlockered drives, created here in Australia where dd/mm/yyyy is standard.
In my Microsoft account Bitlocker keys screen, the various drives either show:
- the date of creation but in US mm/dd/yyyy format, transposing the dd and mm unthinkingly. The date is wrong, but at least a date is recorded.
- "Invalid date", for drives Bitlockered on days when the creation date is illogical when dd/mm/yyyy is unthinkingly recorded as if it were mm/dd/yyyy. For example, a drive Bitlockered today 15 Feb 2021 shows as "invalid date" because there is no 15th month.
Solution:
Re-save your Bitlocker keys to your Microsoft account in the first 12 days of the month. As there are 12 months in a year, a date will be recorded, albeit inside out, which is better data than "Invalid date". I don't believe this display bug impacts Bitlocker functionality.

 

Invalid Date for Bitlocker Recovery Keys in Microsoft Account.

All my PC's, three Desktops and a Laptop are on Windows 10 Pro Version 20H2 19042.685. I started to implement Bitlocker on them at the end of December, 2020. Since I am in the U.K. the date will be in the format dd/mm/yyyy and this seems to present a problem when the key is stored in my Microsoft Account. My account profile correctly shows my birthdate and it knows I am in the U.K. Any key stored in December is Invalid. Now that we are into January 2021, a date is being stored but it is in the U.S. format, namely mm/dd/yyyy. I can find other posts on the web with the problem but no solution. I can’t see anywhere how to change it to the U.K. format.
Need someone in a similar time zone to confirm that it can be done before I spend more time investigating.