[petet66]

Several months ago I tried to first install Vista SP2 when it came out. The update hanged after about 20minutes of downloading and I had to reboot. Now whenever I try to download and install the SP2 upgrade it fails with the error code 800B0100. I have tried many times but the same error happens. I've tried downloading the file as a standalone upgrade and using the online Windows update program. I'm also now experiencing a few other updates failing (presumably because some updates need SP2 installed).

I only installed Vista on my laptop a month or two before SP2 came out and had installed all the previous updates Vista found. SP1 is on and correctly installed. Does anyone have any tips as to what I can try to fix the problem?

[Boon72]

have you stopped your anti virus & firewall before running the update?

How to resolve Windows Vista Update error 800B0100 - Simple Help

[petet66]

The error seems to be due to some missing .mum files - see the CheckSUR log below. How can I replace these missing files?

=================================
Checking System Update Readiness.
Version 6.0.6001.22275
2009-08-30 13:26

Checking Deployment Packages

Checking Package Manifests and catalogs.

Checking package watchlist.

Checking component watchlist.

Checking packages.
(f) CBS MUM Missing 0x00000002 servicing\packages\Microsoft-Windows-VistaServicePack-SysHiper-SP1-Package~31bf3856ad364e35~x86~~6.0.6002.18005.mum
(f) CBS MUM Missing 0x00000002 servicing\packages\Package_11_for_KB948465~31bf385 6ad364e35~x86~~6.0.1.18005.mum
(f) CBS MUM Missing 0x00000002 servicing\packages\Package_14_for_KB948465~31bf385 6ad364e35~x86~~6.0.1.18005.mum
(f) CBS MUM Missing 0x00000002 servicing\packages\Package_15_for_KB948465~31bf385 6ad364e35~x86~~6.0.1.18005.mum
(f) CBS MUM Missing 0x00000002 servicing\packages\Package_16_for_KB948465~31bf385 6ad364e35~x86~~6.0.1.18005.mum
(f) CBS MUM Missing 0x00000002 servicing\packages\Package_17_for_KB948465~31bf385 6ad364e35~x86~~6.0.1.18005.mum
(f) CBS MUM Missing 0x00000002 servicing\packages\Package_18_for_KB948465~31bf385 6ad364e35~x86~~6.0.1.18005.mum
(f) CBS MUM Missing 0x00000002 servicing\packages\Package_19_for_KB948465~31bf385 6ad364e35~x86~~6.0.1.18005.mum
(f) CBS MUM Missing 0x00000002 servicing\packages\Package_20_for_KB948465~31bf385 6ad364e35~x86~~6.0.1.18005.mum
(f) CBS MUM Missing 0x00000002 servicing\packages\Package_3_for_KB948465~31bf3856 ad364e35~x86~~6.0.1.18005.mum
(f) CBS MUM Missing 0x00000002 servicing\packages\Package_6_for_KB948465~31bf3856 ad364e35~x86~~6.0.1.18005.mum
(f) CBS MUM Missing 0x00000002 servicing\packages\Package_7_for_KB948465~31bf3856 ad364e35~x86~~6.0.1.18005.mum
(f) CBS MUM Missing 0x00000002 servicing\packages\Package_9_for_KB948465~31bf3856 ad364e35~x86~~6.0.1.18005.mum
(f) CBS MUM Missing 0x00000002 servicing\packages\Package_for_KB948465_client_1~3 1bf3856ad364e35~x86~~6.0.1.18005.mum
(f) CBS MUM Missing 0x00000002 servicing\packages\Package_for_KB948465_client~31b f3856ad364e35~x86~~6.0.1.18005.mum
(f) CBS MUM Missing 0x00000002 servicing\packages\Package_for_KB948465~31bf3856ad 364e35~x86~~6.0.1.18005.mum
(f) CBS MUM Missing 0x00000002 servicing\packages\VistaSP2-KB948465~31bf3856ad364e35~x86~~6.0.0.18005.mum

Checking component store

Checking SMI Store
Summary:
Milliseconds: 1687744
Found 17 errors
CBS MUM Missing Total Count: 17