Outlook Mail app corrupted?

Hi, you are reporting a number of problems in at least one other thread.

Have you checked your disk?
Crystal Diskinfo (free).
If it shows good, then

From an admin command prompt
[Windows key + X, click command prompt (admin)]
chkdsk C: /F
Your PC will need to restart.
Make sure the result is clear or fixed- else do not proceed.
Post back the result, which you can get after a restart as follows:
How do I see the results of a CHKDSK that ran on boot? - Ask Leo!

If good, then from an admin prompt run
sfc /scannow

If that (still) fails, I suggest you do an in-place upgrade repair install.

If you still have problems, try creating a new user account, and see if things work in that. If so, your user account is damaged in some manner.

Thanks, this brings back lost memory of using Chdsk with Windows XP before the onset of illness which has meant I have not touched a computer for four years. The Leo article is easy to follow, the results are OK?

Checking file system on C:The type of the file system is NTFS.Volume label is Windows.A disk check has been scheduled.Windows will now check the disk. Stage 1: Examining basic file system structure ... 488960 file records processed. File verification completed. 20666 large file records processed. 0 bad file records processed. Stage 2: Examining file name linkage ... 575118 index entries processed. Index verification completed. 0 unindexed files scanned. 0 unindexed files recovered to lost and found. Stage 3: Examining security descriptors ...Cleaning up 78 unused index entries from index $SII of file 0x9.Cleaning up 78 unused index entries from index $SDH of file 0x9.Cleaning up 78 unused security descriptors.Security descriptor verification completed. 43080 data files processed. CHKDSK is verifying Usn Journal... 33498376 USN bytes processed. Usn Journal verification completed.Windows has scanned the file system and found no problems.No further action is required. 48361471 KB total disk space. 24701184 KB in 178148 files. 104796 KB in 43081 indexes. 0 KB in bad sectors. 592663 KB in use by the system. 65328 KB occupied by the log file. 22962828 KB available on disk. 4096 bytes in each allocation unit. 12090367 total allocation units on disk. 5740707 allocation units available on disk.Internal Info:00 76 07 00 f3 5f 03 00 99 05 05 00 00 00 00 00 .v..._..........86 02 00 00 23 8a 00 00 00 00 00 00 00 00 00 00 ....#...........Windows has finished checking your disk.Please wait while your computer restarts.

I think Crystal Disk is not compatible with my C drive, which is an eMMc and does not generate SMART reports. I have not found a similar but compatible app. I do have disk checkers in some computer management apps (Glary, ASC, etc) which report the disk to be OK, but I think they are only using Chkdsk anyway. I had to give up on Ashampoo's checker as it was taking far too long (it warned it would) ---- I may give it another try.)

Sfc/scannow has repaired some faults but reports it cannot repair others --- the logs are beyond me. DISM has not been able to run the last few times I have tried it.

Ok, chkdsk has passed; as a final check on your disk you could try Macrorit Diskscanner (free). It does a surface check.

Given the SFC and DISM failures, I'd return to the idea of an in-place upgrade repair install; it's hardly worth trying to fix individual problems.

However you have very limited disk space, and that procedure requires something like 5+Gb free + as much space as your current Windows folder. You seem to be dual booting as well.

If you have enough space, here's the Tutorial - essentially, boot normally and start the setup
Repair Install Windows 10 with an In-place Upgrade - Windows 10 Installation Upgrade Tutorials

This keeps almost everything- except some settings.

Failing that, assuming your disk is good, you could do a clean install.

Note the new upgrade (Creator's) will have similar space requirements, being the same procedure.

For interest:
How to reset the Windows 10 Store to fix errors, downloads, and other issues PUREinfoTech