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Found this read it it may help


I have never had a problem installing updates to Win 8.1 and all important updates are fully installed. Every time I try to update to Win10 it says "downloading Windows 10 - checking requirements" and then I get the above error message. Any help would be much appreciated!
Steve

Same problem here. Tired of wasting hours downloading over and over again and getting the same error. None of the suggestions I have found and tried work. No wonder they are giving it away free. To frustrate the heck out of everyone. I find it hard to believe in all the testing, they had no occurrences of this and have not come up with a solution.

Forget using the Get Windows 10 icon method. Download and create a ISO then mount it and do the upgrade.

Windows 10 ISO Download - Windows 10 blog

Windows 10 - Upgrade Installation - Windows 10 blog

Tried the MediaTool. Can't get it to open and do anything. I can see it start in the Task Manager, then it just shuts off. So basically, I can't download the ISO.


Forget using the Get Windows 10 icon method. Download and create a ISO then mount it and do the upgrade.

Windows 10 ISO Download - Windows 10 blog

Windows 10 - Upgrade Installation - Windows 10 blog

Try running it as Administrator. Right click on it and select Run as Administrator.

Tried that - same result no matter what I do.

I have the same problems as above. Get error code 80070005 trying to install, and the media tool won't run. Trying to upgrade win 7 to win 10.

Description

The error occurs when you attempt to install Windows updates. When you try to click on check for updates in Windows Update with administrator privileges you cannot install updates and instead you receive error code 80070005.

Step-by-step instruction

Error code 80070005 is caused by a number of factors some of which include an error in the DCOM configuration or the Automatic Updates service. You can begin to solve the problem by seeking verification for the DCOM configuration. To do this simply click on Starton your main toolbar on the desktop and then choose Runfrom the pop-up menu. When the Command Prompt appears type in dcomcnfgand then press the Enterkey. When the Component Services window opens double click on the Component Services folderand then double click on the Computers folder. Right click on My Computerand then choose Propertiesfrom the drop down menu. When the Properties window opens click on the COM Securitytab and then click on Edit Defaultand then check to see that the correct accounts are listed

In the event that one of your accounts is missing you can simply click on Addand then choose Advanced. Click on Locationsand then choose Local Computer Nameand then choose OK. Proceed to click on Find Nowand then press down the CTRLkey on your keyboard. Choose the correct Account Namesand click OK twice.Under User Nameschoose the account that you added and then choose Local Accessin the Permissions area and then place a check mark in the Allowcolumn and then click OK.

Once you complete this process it is necessary to confirm the default settings for DCOM. You can do this by choosing the Default Propertiestab and make sure Enable Distributed COMhas a check mark placed inside the selection box,Identifyis checked under Default Impersonation, and Connecthas a check mark under Default Authenticationand then click OK. Restart your computer when you have completed this process.


Just added the info you posted to this thread: Common Faults / Fixes List - Page 2 - Windows 10 blog

Great find!

Just added the info you posted to this thread: Common Faults / Fixes List - Page 2 - Windows 10 blog

Great find!
Thanks glad I could help cant sleep so thought I would have a look

Found this read it it may help