I just launched Windows Live Writer on my Windows 7 64-bit PC and it told me an update was available. While trying to run the update, it failed with this error:
It looks like another program is preventing the installer from working.
Error: 0x80070643
Source: wllogin-amd64
I reran the installer a few times, but kept getting the same error. I downloaded the offline installer and got the same error. I uninstalled Windows Live Essentials 2011, then tried reinstalling, but got the same error. I was able to find the installer logs in C:\ProgramData\Microsoft\WLSetup\Logs. Searching for “error” in the latest log, I saw this:
MSI_ERROR :00001674 (01/25/2012 12:27:54.317) Service 'Windows Live ID Sign-in Assistant' (wlidsvc) could not be installed. Verify that you have sufficient privileges to install system services.
When I took a look at that service, I saw it was disabled. When I tried to start it, it gave an error saying that it was “marked for deletion”. After a reboot, I noticed the service no longer existed. I restarted the install and everything went smoothly.
In summary, if you get the first error above, here is what worked for me:
- Uninstall Windows Live Writer 2011
- Reboot!
- Reinstall Windows Live Writer 2011
Hopefully this saves someone some time and frustration. There are tons of search results for this error without useful remedies. I upgraded from version 15.4.3502.922 to 15.4.3538.513.