Windows 10: thumbcache.dll on my windows 10 machine memory usage out of sight

On my Windows 10 desktop machine, there are several instances of dllhost.exe running. Only one has a memory issue. According to my Process Explorer display it is the one running thumbcache.dll. It is common within a few days of rebooting my machine for the "Working Set" measurement to top 10-12 Gb, and the "Private Bytes" measurement to top 4-5Gb. A few days ago this dll hit a record Working Set of over 23Gb (Process Explorer shows it as 23,000,000 K).


If I open a directory with lots of photos or videos, I can watch Process Explorer and observe the memory usage pop up for that process. When I close File Explorer, the usage never goes down. Clearly there's a background process that uses thumbcache.dll because occasionally its memory usage will explode overnight.


I've looked at my thumbcache*.db files in C:\Users\%my user name%\AppData\Local\Microsoft\Windows\Explorer, but all of them are in the 0-5 Mb range. Nothing exessive.


I can kill that instance of dllhost,.exe and the system will restart it small and begin building excessive levels of memory usage all over again. Rebooting has the same effect of course. This is a fairly recent development (in the last six months or so).


I've searched the forums and see a lot of generic information about dllhost, but none if it helpful, and almost none of it current and nothing specifically related to thumbcache.dll


It genuinely looks like some kind of garbage collection issue or a memory leak but that's just guesswork.


I realize I'm quoting "virtual" memory measurements, but eventually it uses up all the physical memory on my 8Gb machine. Then it starts to slow things down.


Does anyone have any hard information about problems with thumbcache.dll?

:)

 

Windows 10 high Memory Usage

Hello,



I appreciate your patience.



You might be facing this issue due to several reasons like low virtual memory, third party software conflicts, virus threat on the computer etc.



Even though no programs or applications are running, some background services can show memory usage and disk usage. In order to check which particular program is using the memory, I would suggest you to check the Task manager.



Refer to these steps:

1. Press Windows key + X, select
task manager.

2. Click on the ‘Processes’ tab and it will show you show you a list of programs and services running and their corresponding memory usage and disk usage.

3. Check if any of the item listed is consuming more memory or disk usage than normal.



I suggest you to try the following steps and check if it helps.

You need to increase this virtual memory.

Make it equivalent to your RAM size for the initial size and twice of the initial size in maximum size and make sure you have the same amount of free space in your hard drive in each drive.



To do this, follow the following steps:

1. Go to Control Panel (Press Windows key + X)> All control panel items > System

2. Click on Advanced system settings.

3. Under Performance, click on settings

4. Go to Advanced tab

5. Under Virtual memory, click on Change

6. Un-check "Automatically manage paging file size for all drives" check box

7. Select your windows drive (where OS is installed)

8. Click on Custom size radio button

9. Set Initial size equivalent to your RAM size in MB

10. Set Maximum size to twice of your RAM size in MB

11. Click on Set

12. Click on OK thrice

13. Restart your system



Hope it helps.



Let us know if the issue persist, we are glad to assist you further.

 

100% Memory usage

Hi,

Thank you for posting your query on Microsoft Community.

You might be facing this issue due to several reasons like low virtual memory, third party software conflicts, virus threat on the computer etc.



Even though no programs or applications are running, some background services can show memory usage and disk usage. In order to check which particular program is using the memory, I would suggest you to check the Task manager.



Refer to these steps:

1. Press Windows key + X, select
task manager.

2. Click on the ‘Processes’ tab and it will show you show you a list of programs and services running and their corresponding memory usage and disk usage.

3. Check if any of the item listed is consuming more memory or disk usage than normal.



I suggest you to try the following steps and check if this helps.

You need to increase the virtual memory by making it equivalent to your RAM size for the initial size and twice of the initial size in maximum size and make sure you have the same amount of free space in your hard drive
in each drive.



To do this, follow the steps:

1. Go to Control Panel (Press Windows key + X)> All control panel items > System

2. Click on Advanced system settings.

3. Under Performance, click on settings

4. Go to Advanced tab

5. Under Virtual memory, click on Change

6. Un-check "Automatically manage paging file size for all drives" check box

7. Select your windows drive (where OS is installed)

8. Click on Custom size radio button

9. Set Initial size equivalent to your RAM size in MB

10. Set Maximum size to twice of your RAM size in MB

11. Click on Set

12. Click on OK thrice

13. Restart your system

Hope this information was helpful and do let us know if you need further assistance. We will be glad to assist.

 

High Memory usage resulting to crashes

Hi Jean Ysrael Marquez,

Thank you for bringing up your query on Microsoft Community.

Apologize for the difficulties that you're experiencing in Windows 10.

Please be assured that we will do our best to help you.

You might be facing this issue due to several reasons like low virtual memory, third party software conflicts, virus threat on the computer etc.

Step 1: Even though no programs or applications are running, some background services can show memory usage and disk usage. In order to check which particular program is using the memory, I would suggest you
to check the Task manager.

Refer to these steps:

1. Press Windows key + X, select
task manager.

2. Click on the ‘Processes’ tab and it will show you show you a list of programs and services running and their corresponding memory usage and disk usage.

3. Check if any of the item listed is consuming more memory or disk usage than normal.

Step 2: I suggest you to try the following steps and check if it helps.

You need to increase this virtual memory.

Make it equivalent to your RAM size for the initial size and twice of the initial size in maximum size and make sure you have the same amount of free space in your hard drive in each drive.

To do this, follow the following steps:

1. Go to Control Panel (Press Windows key + X)> All control panel items > System

2. Click on Advanced system settings.

3. Under Performance, click on settings

4. Go to Advanced tab

5. Under Virtual memory, click on Change

6. Un-check "Automatically manage paging file size for all drives" check box

7. Select your windows drive (where OS is installed)

8. Click on Custom size radio button

9. Set Initial size equivalent to your RAM size in MB

10. Set Maximum size to twice of your RAM size in MB

11. Click on Set

12. Click on OK thrice

13. Restart your system

Hope it helps.

Let us know the status, we are glad to assist you further.