I also have TrueImage home installed, and I never would have guessed that it was the cause of my network problem.

I had no IRPStackSize entry at all, adding it with a value of 16 and restarting the Server service fixed it right up.

Thanks!

Stacksize had to be increased to 18 here.
I too have trueimage.

I have 3 machines ... after increasing the stack size to 18 at first only the vista machine would talk to the XP desktop that is the troublemaker.
The laptop (also XP) would not talk to the trouble machine at first .. but I went to the toilet and when I came back I tried again and it worked that time without me doing anything.
Weird ... eh ?

I notice with lan stuff you have to do a lot of rebooting and a lot of waiting ... if at first it does not work ...just wait a few mins ....

Note to self: IRPStackSize must be a DWORD, not a STRING.....

Aaaaarrrrrrgggghhhhh

This solved my problem first time... thanks

WIN XP home, vanilla, value of 16 worked for me! THANK YOU!

suddenly started getting the "Not enough server storage" error when attempting to access shares on a WinXP box from a Vista box

for me it all went horribly wrong when windows update installed .NET 2.0 framework SP1

added the IRPStackSize with value 16, rebooted, no luck
changed value to 18, rebooted, works a charm!

thank you! thank you! i can access my 2TB share again

props to admin

After installing Acronis TrueImage home 2009 (which I like), I was not able to access my computer. I only realized this fact after reading your post. By first looking at Microsoft, they suggested to put the key larger than 4. Well this is far from enough. It used your recommended 15 and all is fine for me. Now I have to go back at Norton Internet Security and undo settings that I thought were wrong. Well!

Merci.

Signed up to cast vote and "Thank you so much for this post!!" I still need a little help though. After changing parameters I can now access all of my network files(yeah, been working 3 days on it) However, video now takes an unusually long time to load, and stutters while its playing. I have tried lots of settings (in increments of 3 up to 50) and even increased local cache to accommodate...to no avail.
My network WAS running fine w/o the irpstack mod before...and no wait when executing video etc..then a few days ago I could see the network, including folders but could not access files..until this change. I feel like I am very close, but I am at a loss right now. ANY help would be hugely appreciated. I would be more than happy to provide any additional info, if needed. Thanking you in advance,
Erich

FYI:

Through trial and error I determined that a setting of 16 (decimal) or higher worked for me. Restarted the Server service after each trial modification to the registry setting. Note that setting back to 15 always results in the error returning.

Thanks for the effective advise. My problems, too, started after installing TrueImage.
Peter

I could no longer get my Vista Machine to access the mapped drives (both internal and external) which are connected to my XP computer and got the error message about insufficient server storage.

I checked the registry of the XP machine and there was no IRPStackSize entry. 15 didn't work, but when I raised it to 18, all was back as it should be.

As I try and recreate what caused the problem to appear I think the trial version of TrueImage may be the culprit since that was recently installed and even when not actively running has some processes going in the background. Of course, that may not be the case, but I can't think of anything else that's been changed in the last day or so that might have caused it.

In any event, I'm sure grateful for the info that solved this.

Thanks.

Dick

Dell Dimension Optiplex and Lenovo X61s connected through LAN at work, both running WinXP Pro SP2. Dell has Sophos, Lenovo has Kaspersky antivirus. Both computers 'see' each other and I could access files on the Dell from the Lenovo but not vice versa. Neither computer had the IRPStackSize entry. I added the IRPStachSize with value 15 on the Lenovo and restarted services as indicated by a post below. Did not work. I increased value to 25, restarted services and BINGO! Now I can access files in both directions again (only Lenovo has IRPStackSize entry!).
Thanks for this quick and easy solution which I just rated a four star.

here my story:
Desktop Dell XPS, two Lenovo Thinkpads in a small WLan net. XP Prof SP3 on all.

The two laptops allow file transfer both ways between them.
The desktop can download files from the laptops, but none of the laptops can download files from the desktop.

Checked IRPStackSize parameter in desktops registry: Not included.

Repaired registry as suggested, set value to 15. Result: No good, no change.

Increased IRPStackSize to 25. Result: ok, file transfer from and to desktop is now possible. :)

Checked registry on both laptops, no IRPStackSize parameter???
Can't explain why it is necessary to have this entry on the desktop registry, but the laptops don't seem to need it.

Anyhow, most important - problem solved - thanks

Server was XP SP2 machine with Symantec AV 10.1.5.5000 and client also XP SP2. IRPStackSize was set to 15 and I was getting event 2011. Set IRPStackSize to 25 and, in lieu of rebooting, restarted the Server service (Start -> Run -> services.msc). Tried it again and voila, share access. Thanks!

I tried so hard to connect my laptop (Win 2K SP4) to my desktop pc (Win XP SP3) and always received the alert, that there was not enough server storage.

I also knew about the MS advice, but increasing the IRPStackSize value on my laptop didn`t change anything. Today I read your hint, increased the value on my desktop pc from 15 up to 18 and - voilá - I can finally access my desktop pc over the network!!!
Thank you so much!

I just bought a 2TB external USB drive to use for storage for my company until we upgrade our systems. I had just installed it and started moving many of our (less used) shares to the new drive when I decided to test it out to make sure the oft-used shares would work properly. That's when I ran into the "Not enough server storage space available to process this command" error. I'm am so glad the first thing I did was to do a search on the error and that I ended up at this site! I am using Symantec Anti-Virus Corporate Edition and I ended up using 25 instead of 15 to get it to work. Your article saved me so much time I can't thank you enough.

I was having trouble connecting to a shared Western Digital USB drive connected to an XP desktop. I couldn't do it from my Mac or another PC, but it wasn't until I tried from another PC that I was able to track down the error message and solve it.

As a note, I had to increase the value to 25 to make it work. You might consider adding that footnote to your excellent solution.

Also, if you're adding this DWORD value to the registry, it is case sensitive and must be enter exactly as it is shown in the post (IRPStackSize)

like another user signed up just to say thank you and vote it four stars.I can stop the pulling of - the very little I have left - hair .
Appreciate it - keep up the good work.
Cheers
mefrunter

This was such good and helpful advice that I signed up just to give it as many stars as possible and make this comment. Thanks so much to whoever posted this.