Am using Win7 Ultimate Sp1 32 bit. Since last week (bunch of Windows updates), upon every boot, I get a volsnap error: shadow copies of volume C: were deleted because the shadow copy storage could not grow in time and my system restore points are deleted. I have 150 GB free space on the drive and System protection is allocated for 8% of the drive. Coinciding with this issue is the fact that I'm also having problems resuming from sleep. I'm not sure if the shadow copy error also occurs on resume from sleep

Hi charlestek, Thanks for posting in TechNet forum. Try the following method to fix this issue. Note: Please backup the registry before you modify. 1. Click Start, input regedit, press Enter 2. Locate and then click the following key in the registry: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\VolSnap 3. On the Edit menu, point to New, and then click DWORD value. 4. Type MinDiffAreaFileSize, and then press ENTER. 5. On the Edit menu, click Modify. 6. Type the size that you want for the shadow copy storage area, and then click OK. Reboot the computer to check if it works. If it doesn't work, please check the disk. 1. Click the Start, input cmd in the search bar. 2. Right-click cmd, run it as Administrator. 3. Input the command: Chkdsk /f /r Restart the computer then check if the problem is still there. If the issue persists, I would like to know more details Is it a domain-joined computer? What's kind of your server? Did this issue happen before? Here's the similar thread before for your reference: http://social.technet.microsoft.com/Forums/en/w7itprogeneral/thread/7f35bc14-195a-4db6-a0bf-0003f5ccdfef http://social.microsoft.com/Forums/en/whssoftware/thread/d9499524-1e75-4da9-982f-fe82b4bf140e Regards, Miya TechNet Subscriber Support in forum. If you have any feedback on our support, please contact tngfb@microsoft.com This posting is provided "AS IS" with no warranties, and confers no rights. | Please remember to click "Mark as Answer" on the post that helps you, and to click "Unmark as Answer" if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Hi, How's going? Please feel free to give us any update. Regards, Miya TechNet Subscriber Support in forum. If you have any feedback on our support, please contact tngfb@microsoft.comThis posting is provided "AS IS" with no warranties, and confers no rights. | Please remember to click "Mark as Answer" on the post that helps you, and to click "Unmark as Answer" if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Hi, As this thread has been quiet for a while, we assume that the issue has been resolved. At this time, we will mark it as ‘Answered’ as the previous steps should be helpful for many similar scenarios. If the issue still persists, please feel free to reply this post directly so we will be notified to follow it up. You can also choose to unmark the answer as you wish. BTW, we’d love to hear your feedback about the solution. By sharing your experience you can help other community members facing similar problems. Thanks for your understanding and efforts. Regards, Miya TechNet Subscriber Support in forum. If you have any feedback on our support, please contact tngfb@microsoft.comThis posting is provided "AS IS" with no warranties, and confers no rights. | Please remember to click "Mark as Answer" on the post that helps you, and to click "Unmark as Answer" if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Miya, Remember this is a Windows 7 machine, not a Windows 2003 server. chkdsk c: /r /v was performed, no errors. What is a default size value for MinDiffAreaFileSize? Why does that key not exist before? If the system was working properly a month ago without this key, why do I need it now? Thanks, Phil

I set MinDiffAreaFileSize to 3000 Rebooted, still have shadow copies deleted......

Use the Vssadmin command to check how much shadow copy storage do you have now. Run cmd as administrator, input the command: vssadmin list shadowstorage How much size do you have? If it's too small, use the command to resize it. Refer to: http://technet.microsoft.com/en-us/library/cc788050(WS.10).aspx Meanwhile, what's the detailed error message you got in your Event Viewer? Open Event Viewer - Windows Logs - Applications, under Actions, choose Filter current logs, choose the Event sources "VSS". Provide us with the detailed logs. Regards, MiyaThis posting is provided "AS IS" with no warranties, and confers no rights. | Please remember to click "Mark as Answer" on the post that helps you, and to click "Unmark as Answer" if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Volume H is another dual boot Windows 7 system, which is showing up even though C: is the active drive. vssadmin 1.1 - Volume Shadow Copy Service administrative command-line tool (C) Copyright 2001-2005 Microsoft Corp. Shadow Copy Storage association For volume: (C:)\\?\Volume{94305df9-0bc4-11dd-b4d1-806e6f6e6963}\ Shadow Copy Storage volume: (C:)\\?\Volume{94305df9-0bc4-11dd-b4d1-806e6f6e69 63}\ Used Shadow Copy Storage space: 777.188 MB (0%) Allocated Shadow Copy Storage space: 3.039 GB (1%) Shadow Copy Storage association For volume: (H:)\\?\Volume{f197c47a-111d-11de-b59f-001fc6488991}\ Shadow Copy Storage volume: (H:)\\?\Volume{f197c47a-111d-11de-b59f-001fc64889 91}\ Used Shadow Copy Storage space: 5.745 GB (1%) Allocated Shadow Copy Storage space: 6.224 GB (1%) Maximum Shadow Copy Storage space: 10 GB (2%) Maximum Shadow Copy Storage space: 24 GB (8%) Event 25, volsnap The shadow copies of volume C: were deleted because the shadow copy storage could not grow in time. Consider reducing the IO load on the system or choose a shadow copy storage volume that is not being shadow copied.

Please also check your Volume Shadow Copy service writer, also use the vssadmin command. Input the command: vssadmin list writers Any errors there? Refer to this Hotfix: http://support.microsoft.com/?id=826936 Regards, MiyaThis posting is provided "AS IS" with no warranties, and confers no rights. | Please remember to click "Mark as Answer" on the post that helps you, and to click "Unmark as Answer" if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Miya, you are giving me all hotfixes and data for Windows Server 2003. MY SYSTEM IS WINDOWS 7 ULTIMATE 32 BIT, NOT WINSERVER 2003. No errors from the list writers. Writer name: 'Task Scheduler Writer' Writer Id: {d61d61c8-d73a-4eee-8cdd-f6f9786b7124} Writer Instance Id: {1bddd48e-5052-49db-9b07-b96f96727e6b} State: [1] Stable Last error: No error Writer name: 'VSS Metadata Store Writer' Writer Id: {75dfb225-e2e4-4d39-9ac9-ffaff65ddf06} Writer Instance Id: {088e7a7d-09a8-4cc6-a609-ad90e75ddc93} State: [1] Stable Last error: No error Writer name: 'Performance Counters Writer' Writer Id: {0bada1de-01a9-4625-8278-69e735f39dd2} Writer Instance Id: {f0086dda-9efc-47c5-8eb6-a944c3d09381} State: [1] Stable Last error: No error Writer name: 'System Writer' Writer Id: {e8132975-6f93-4464-a53e-1050253ae220} Writer Instance Id: {b50b1477-2fbc-41dd-89df-4f45e38191b5} State: [5] Waiting for completion Last error: No error Writer name: 'ASR Writer' Writer Id: {be000cbe-11fe-4426-9c58-531aa6355fc4} Writer Instance Id: {22ef4bcf-c0d3-42e4-9640-1eee40b4f170} State: [1] Stable Last error: No error Writer name: 'SqlServerWriter' Writer Id: {a65faa63-5ea8-4ebc-9dbd-a0c4db26912a} Writer Instance Id: {fccc9196-9bc7-4a7d-8b7f-526294518933} State: [1] Stable Last error: No error Writer name: 'IIS Config Writer' Writer Id: {2a40fd15-dfca-4aa8-a654-1f8c654603f6} Writer Instance Id: {e7e433cf-ada1-4789-9fd2-41aa3c287bb8} State: [1] Stable Last error: No error Writer name: 'IIS Metabase Writer' Writer Id: {59b1f0cf-90ef-465f-9609-6ca8b2938366} Writer Instance Id: {b0a6f36f-5f90-4422-a202-129d53e5e11b} State: [1] Stable Last error: No error Writer name: 'MSSearch Service Writer' Writer Id: {cd3f2362-8bef-46c7-9181-d62844cdc0b2} Writer Instance Id: {5bbf2361-eaf9-47d5-ac3c-e787fcbfb009} State: [5] Waiting for completion Last error: No error Writer name: 'BITS Writer' Writer Id: {4969d978-be47-48b0-b100-f328f07ac1e0} Writer Instance Id: {a99903d2-adee-48c2-88ac-a363f842c9d7} State: [1] Stable Last error: No error Writer name: 'Shadow Copy Optimization Writer' Writer Id: {4dc3bdd4-ab48-4d07-adb0-3bee2926fd7f} Writer Instance Id: {bab47eec-36b1-42b6-8306-b7d27ef04f0a} State: [1] Stable Last error: No error Writer name: 'Registry Writer' Writer Id: {afbab4a2-367d-4d15-a586-71dbb18f8485} Writer Instance Id: {930544e6-1d88-4b5e-af60-0a419127c20d} State: [1] Stable Last error: No error Writer name: 'WMI Writer' Writer Id: {a6ad56c2-b509-4e6c-bb19-49d8f43532f0} Writer Instance Id: {f0a0c998-b0b4-4e1b-a935-f5be0c78598c} State: [5] Waiting for completion Last error: No error Writer name: 'COM+ REGDB Writer' Writer Id: {542da469-d3e1-473c-9f4f-7847f01fc64f} Writer Instance Id: {5baef863-7d48-450c-97f8-9d15b1497365} State: [1] Stable Last error: No error C:\Users\SmallFry> C:\Users\SmallFry> C:\Users\SmallFry>

Finally found the answer: http://blogs.technet.com/b/win7/archive/2011/02/16/restore-points-lost-after-system-rebooting.aspx The disk defragment software Perfect Disk recently had a version update. Apparently it screws up the system restore. I disabled the two Perfect Disk services in the service manager gui, and I seem to not have the volsnap shadow copy deleted error when rebooting. I still have one other issue, I'm possibly not seeing the automatic system restore points. I looked in the task scheduler and they are set to run at midnight. The scheduler says last run time 4/24/2011 1:01:52 AM, but I checked the restore point settings, and no restore point was created at that time.

Glad you find the answer! I suspect your computer is in Sleep Mode in midnight when backup, if so, the backup won't start. If not, please start a new thread about this new issue. It will get more help from the community member here. Regards, MiyaThis posting is provided "AS IS" with no warranties, and confers no rights. | Please remember to click "Mark as Answer" on the post that helps you, and to click "Unmark as Answer" if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.