Stretched Thumbnails in Explorer

Hello @Winneh da Pu,

[1] What does it say if you right-click on your Desktop and choose Display Settings?
[2] Did you change ANYTHING before this happened?
[3] Have you got a System Restore Point PRIOR to this happening?
[4] Have you run SFC?

 SFC

IMPORTANT:

• It is recommended when running SFC that Fast Startup is turned OFF [ Turn it back ON when finished ] => How to Turn On or Off Fast Startup in Windows 10
  
  
• If SFC finds any ERRORS that it can NOT repair, run SFC again upto 3 more times, Restarting after each to allow any pending actions to be implemented.
  
  
• DISM will initially try and Repair ANY Corrupted or Missing files using the Component Store.
  If this is NOT possible, DISM will use Windows Update. Therefore, Internet access is required.
  If you are NOT connected to the Internet, you will receive a Error: 0x800f081f.

[1] Press the Win + X keys together > Command Prompt (Admin).
[2] Type the command below . . .

Code:

sfc /scannow

[3] Press Enter.

---

 SFC Error Report - Do this ONLY if there are ERRORS

[1] Press the Win + X keys together > Command Prompt (Admin).
[2] Highlight the command below.

NOTE:

If you have a Relocated Desktop, then change the %UserProfile% part of the Command below to the actual path of the Relocated Desktop folder.

[3] Press the Ctrl + C keys together.
[4] Right-click inside the Administrator: Command Prompt Window > Paste.
[5] Press Enter.

Code:

findstr /c:"[SR]" %windir%\Logs\CBS\CBS.log > "%UserProfile%\Desktop\SFC_Details.log"

• This will create a SFC_Details.log file on the Desktop.

EITHER:

Copy & Paste the results into your post using the [CODE] tags . . .

[1] Open the SFC_Details.log file in Notepad.
[2] Press the Ctrl + A keys together.
[3] Press the Ctrl + C keys together.
[4] In your post, click the Hashtag icon #.
[5] Click INSIDE the [CODE]Here[CODE] tags and press the Ctrl + V keys together.

• In your post it will look like this . . .

Code:

<<< Results Here >>>

OR:

UPLOAD the file => How to Upload and Post Screenshots and Files at Ten Forums.

---

I hope this helps.

Hello @Winneh da Pu,

Winneh da Pu said:

Ok, SFC fixed some corrupt files, and I turned off the custom scaling but the problem remains with some of the thumbnail's remaining stretched.

OK. Now you have turned off the Custom Scaling, run SFC a couple more times.

Hello @Winneh da Pu,

Have a look at this => How to Clear and Reset the Thumbnail Cache in Windows 10

I hope this helps.

Hello @Winneh da Pu,

Winneh da Pu said:

So no change from running the bat file. And SFC came up with nothing, running it a few more times.

OK. I have stayed up as long as I can to help you. I am just off to bed as it is almost 01:00 a.m. I will check how you got on tomorrow.