What's Up With My Thumbcache disappearing?

[ryana1980]

Every build of windows 7 that I've used, from the rc to 7260 has been great except for one problem. My thumbnail cache is constantly deleted and having to be rebuilt. I have many, many pictures and videos and this is a problem to have to load thumbnails all the time. this is always on a fresh install with no added software. Does anybody else have this problem? If so, have you been able to find why the thumbs are "automatically" deleting? I don't think it's a widespread problem because I have yet to see anybody else discuss this.

 

[Dzomlija]

Every build of windows 7 that I've used, from the rc to 7260 has been great except for one problem. My thumbnail cache is constantly deleted and having to be rebuilt. I have many, many pictures and videos and this is a problem to have to load thumbnails all the time. this is always on a fresh install with no added software. Does anybody else have this problem? If so, have you been able to find why the thumbs are "automatically" deleting? I don't think it's a widespread problem because I have yet to see anybody else discuss this.

I've had no such problems either with Build 7000 or 7100...

 

[ryana1980]

Ok, thanks for the reply, Dzomlija. I guess it is something unique to my setup that I have to try to figure out.

 

[dmb219]

Are you using CCleaner? By default it deletes the cache, but you can un-select that item in the options. If that's not it, I'm stumped.

 

[ryana1980]

nope. it's a completely fresh install... no added programs. not running disk cleanup or anything. I'm completely stumped as well. Vista doesn't have this problem.

 

[lilamezz]

problem still alive

I have exactly the same problem still first RC release. Today, using RTM Ultimate French, the problem is still there. I have a lot of videos like ryana, and randomly the thumbnail cache is totally cleaned;

The only solution I found : backup of thumbnail cache files (users/{username}/local/appdata/microsoft/windows/explorer/*.*) with Acronis true image every day (with 5 day history). When the cache disapears, I restore my backup and thumbnails are back.

I believe Windows seven does a clean up automatically, maybe on a maxsize parameter base, I searched every forum talking about this since may 2009, nada !

Anybody has an idea ?

 

[burtie]

Seems to happen to me too

 

[usufruit50]

Same.
It’s why I can’t use seven.
Have you the thumbcachetodelete folder in your user explorer folder just before is deleted?

 

[ryana1980]

yes, it does create the thumbcachetodelete folder. I've also noticed it is creating thumbs.db files. I've never used XP on this computer, so they're not leftovers from XP. You have to show hidden files and show hidden system files to see them. I'm stumped. I was hoping to get this figured out by the time it's released, but I'm not thinking it will happen. I won't buy unless I can figure it out, which sucks because I like 7 except for this one problem.

 

[usufruit50]

Ryana1980, can you update your system specs, because I think for a hardware issue.
Thank You.

 

[lilamezz]

If that helps, I updated my system specs too.

 

[ryana1980]

Usufruit50, I have updated my system specs. It's an older system but is more than enough for what I do with it. From what I can tell, we have no similar hardware. I was thinking the same thing about it being a hardware problem and was considering upgrading, but I'm reconsidering that seeing as how you have the same problem and have an up-to-date system. I'm completely stumped.

 

[usufruit50]

Thank for the system specs updates.
Ryana1980, i think your right, seem not a hardware issue.

 

[lilamezz]

As the problem seems not to have a solution yet, I tried the following : I modified the security rights of the folder "users/{username}/local/appdata/microsoft/windows/explorer" where thumbnails files cache are kept by windows seven. I deleted the "remove", "remove file" and "total control" from the rights of every user allowed tu use this folder, with replacement of the right for all child folders and files.

I did it 2 days ago and, since that time, no problems : thumbnails are well created and updated and did not disapear. Before, I was obliged to restore my thumbnail data base every morning.

Wait and see a few days more, but I believe it worked.

 

[ryana1980]

wow, lilamezz. finally something that sounds like it could work! keep us updated, please.

 

[ryana1980]

oh, could you please tell me exactly what you did here?

 

[lilamezz]

My solution seems to work as well as possible. 4 days after modifying the security rights, then not allowing to the unknown windows 7 "ghost" process reinitializing thumbnails cache files, my thumbnails are steel there. Ryana, what details do you want ?

 

[ryana1980]

I know how to change security rights and all that, but what did you change the rights to? can you give me a step by step or something. haha, I'm sorry.

 

[lilamezz]

Maybe the problem is that I'm french and my english sucks I'll try to explain better , but i'll have to translate my french windows messages in english, and I don't know if they'll fit with the real ones on an english Windows Seven. Let's try:

- In Explorer, right click on the folder who maintains the Thumbnails cache :
"users/{username}/local/appdata/microsoft/windows/explorer" (where {username} is replaced by the name of the windows user, for example Alain for me)
- Propriétés
- Sécurity
- Advanced
- Modify rights
- Here appears all the users who are allowed to use this folder (for me For "System", "Administrator" and my user "Alain". For each user :
- Modify
- Uncheck "Total Control", "Delete subfolder and files", "Delete", "Modify rights", "Appropriation"
- Chek the last check box "Apply these rights to objects and containers etc."
- Click OK

This seems to have the following effect : no more user is allowed to delete the thumbnails cache files, who was exactly our problem.

Since this right's modification, I never loose my thumbnails. The only secondary effect I found was a system message saying that the search indexing process encountered a problem and stopped (2 times in four days). I don't know if it is related, but maybe it is the automatic search indexing process who modifies the thumbnails cache files, and now it is not able to do it.

If anybody tries my method, i'd like to know if the same secundary effect is encountered. But for me, even with this message, I prefer no to have to restore my 9000 video thumbnails every day, even I have to click "OK" once every 2 days on an error message.

Keep me informed.

Alain

 

[ryana1980]

wow, ok. I'll try it out and see how it goes. thanks for that, lilamezz.