Recently can't fully defrag C drive - used to work OK

[stduc]

I defrag my C drive about once a month. It used to complete - no issues.

Now it completes but says
"some files on this volume could not be defragmented"
"Please check the defragmentation report for a list of these file"

But there is nothing in the list - this is the report

Volume BootDisk System Disk (C
Volume size = 30.00 GB
Cluster size = 4 KB
Used space = 16.95 GB
Free space = 13.05 GB
Percent free space = 43 %

Volume fragmentation
Total fragmentation = 0 %
File fragmentation = 0 %
Free space fragmentation = 0 %

File fragmentation
Total files = 73,908
Average file size = 351 KB
Total fragmented files = 1
Total excess fragments = 378
Average fragments per file = 1.00

Pagefile fragmentation
Pagefile size = 4.00 GB
Total fragments = 1

Folder fragmentation
Total folders = 6,202
Fragmented folders = 1
Excess folder fragments = 0

Master File Table (MFT) fragmentation
Total MFT size = 83 MB
MFT record count = 80,463
Percent MFT in use = 95 %
Total MFT fragments = 3

--------------------------------------------------------------------------------
Fragments File Size Files that cannot be defragmented
None

So I searched the internet & this site. This is what I have tried so far, to no avail.

Defragged in safe mode - no change.
Scheduled a chkdsk at re-boot - no errors found
Quit the AVG control centre in case its antivirus related activity - defragged again - no change
Done a full virus scan - no problems reported.

So I started thinking what may have changed since I last did a defrag?

I've installed Nokia Data suite
I've installed a bluetooth dongle
Microsoft update did it's thing on update Tuesday

I realise it's no big deal having a few fragmented files on drive C - But as it used to defrag 100% no issues - this has got me curious.

So I'm wondering - has anyone else come across this recently and if so have they found a solution that doesn't involve buying a third party defrag tool?

I have been known to be wrong.
The best way to thank someone who helps you is give them a star.

 

[Venzent]

I think it's your MFT, your MFT can't be defragged online. Some commercial defraggers can defrag your MFT, like O&O powerdefrag or Speeddisk etc etc. As far as I know, there ere no free tools to defrag the MFT

 

[stduc]

I don't believe it's the MFT as that is in only 3 chunks - not an issue I would have thought.

However the File fragmentation is claiming 1 file with 378 fragments. I guess it could be restore point?

I have been known to be wrong.
The best way to thank someone who helps you is give them a star.

 

[xwb]

Try diskkeeper - it will even defrag when the disk is in use and it does a far better job than windows defrag.