IT Consultant Everyday Notes

Just some problems/solutions storage

Category Archives: Upgrade

SCCM: What NOT to do when upgrade SCCM CB

Gerry published a piece of wisdom from Prod Team:


  1. Do NOT manually clean up EasySetupPayload folder for CM update that is being downloaded/processed.
  2. Do NOT manually clean up CMU without confirming the correct state and content library for the Easy Setup package.
  3. Do NOT restore the CM database/CM site server if there is an error with CM update (fix the issue and “retry installation”).
  4. Do NOT reinstall the Service Connection Point if an update is in progress.
  5. Do NOT use 1602 cd.latest to install a standalone primary site (Note: you can use this method to install a child primary to a 1602 CAS).
  6. Do NOT use 1602 cd.latest to upgrade a 1511 site or R2 SP1 (or earlier) site.
  7. Do NOT manually clean up any CM_Update* tables.
  8. Do NOT restart CMU service during installation.
  9. Do NOT keep the CMUStaging\<Guid> folder open during installation.
  10. Do NOT copy files in CMUStaging.
  11. Do NOT restart SMSEXEC during payload download (dmpdownloader.log shows if the package content is downloading). The Notification can get lost in that scenario.

SCCM: Prerequisites check for new SCCM build fails. Why?

I am in process of upgrade of my SCCM TP to TP 1601. As the first step I need to check prerequisites. For that I right-click the downloaded update and select Check Prerequisites.


After some time it failed. Where we can find out why? Here:


SCCM: SCCM 1511 does not download 1512, 1601 TP

I decided to test auto update technology introduced with SCCM CB (currently 1511). So, I enabled Service Connector, set it to online and restart SMS_DMP_Downloader. I check the dmpdownloader log and figured out updates cannot be found even though two builds 1512 and 1601 are available at this time…

After some head scratching I decided to install SCCM TP4 instead of RTM version of 1511 (the idea behind was – 1512 and 1601 are Technical Previews, so maybe it cannot be downloaded by RTM version?)

And it looks like it is right – in dmpdownloader.log I found an interesting line:


and after that SCCM TP4 download the latest SCCM update (in my case 1601).


So I guess you should have a Preview version to download/install/test Preview Builds Smile

SCCM 2012 R2: Migration from SCCM 2007 SP2

Wally Mead on SCCM migration video:

SCCM 2012 R2: OSD fails after upgrade


I upgraded SCCM 2012 SP1 CU2 to SCCM 2012 R2 CU2 and after that my OSD TS starts to fail with:


401 – Unsuccessful with context credentials. Retrying with supplied credentials.   …
Network access account credentials not supplied.

401 – Unsuccessful on all retries.


I tried to delete/re-create Network access account – no go

Add a new account to NAA list (SCCM 2012 R2 supports multiple NAA) – no go

Made minor changes to my boot image to force boot image rebuild – after redistribution on DP TS successfully started.


NOTE: if you use CD/USB media you need to recreate it!