Try using JaWaVa's programs. GMTK will tell you what's on your PC and Device Manager will do the same on your device. Given you report you get straight lines without your device connected then I suspect you have no maps on your PC.
As dpawlyk wrote, you can skip the dism ... If your really interested in this tool, do a google search on DISM Windows 11 and you should get several results on how to use it along with the SFC tool. But, again, your problems do not seem to be related to a bad installation of Windows.
The identical maps in the map list occurs because your device is connected to the computer. If you run BaseCamp without the device attached, you should only see one.
You DO NOT want to remove any maps on the computer or device.
On my device, the North America map is installed as two separate maps. One covers the USA and the other covers Mexico and Canada. If the wrong device map is chosen, the address search won't work.
I see two city navigator maps listed in the upper left library pane under devices. In the drop down Map Products list on the tool bar I see three city navigator maps. One is intalled on the computer and covers all of North America, one is on the device and covers only the US. The third is on the device and only covers Canada/Mexico.
If you do not see the drop down Map list, go to View>Toolbars and check Map Products
Again, the map that doesn't cause the pop-up when chosen from the drop down list is the one installed on the computer. If the pop-up appears and asks if you want to use the installed map (this refers to the map installed on the computer) click Yes.
Otherwise, don't attach your device to the computer wihen planning.
As an after thought, select maps from the drop down list on the tool bar. I'm not sure that clicking on maps listed under Devices in the Library pane has any effect in choosing a map. Even if it does, the map installed on the computer is not listed there.
If you reached this point, my best guess is that everything is/was working as it should.
The City Navigator North America map was installed as two separate maps on the device. One covering all of Mexico & Canada and one covering all of the US. (Perhaps OP can confirm by checking the myMaps on the device).
When the OP was using the BaseCamp with the device attached they were using the map(s) installed on the device. BaseCamp opened one of the two city navigator maps on the device and it just happened to be the one that did not cover the location of interest. That is why the address searching was not working.
I'm not so sure. I was surprised to find the North America map split into two separate maps on my device. I do not mean that the map is split between the device drive and an SD card. It appears as two separate maps either of which can be enabled/disabled.
BaseCamp can only display one map at a time, so someone using the maps off their device would see the North America map as active in the drop down menu. If that map was the wrong one for their area the user would be looking at the global map and associated data while rightfully expecting it to be city navigator map.
On the computer the map is intalled as a single entity so it is not an issue.
I'm not sure you are following the thread. when this issue started there was one, and only one, map showing in BaseCamp when the DS66 was disconnected.
that was the global map; which - rumor has it - is not address searchable.
dating back to 2014, I have used, exclusively, BaseCamp to update BaseCamp software, device software and maps.
I can never recall being prompted or being offered to install maps on the PC - as I mentioned above, I noted it as a PITA shortcoming.
I dismiss the above theory that "BaseCamp does not update maps, MapInstall does"
when launched, invisibly, it appears to users that BaseCamp is doing the work.
you may recall:
" sussamb 297 Points November 2014 edited November 2014 Flag Basecamp works with both my 1490 and 2508 ... used it for route planning for years Unfortunately I suspect your nuvi model doesn't do 'routes'. "
based on the discussions here - and in my quest to make BaseCamp function, I downloaded Garmin Express.
my first attempts at "reinstall to the device" may have worked, but the "install on PC" did not work.
the PC is a notebook, battery powered, the cable modem + router are on a UPS.
but something inserted a glitch, somewhere, somehow.
after following BTLaake's "route to success," GarminExpress did its thing correctly and I now have the North American maps on the PC.
glitch? definitely, as I mentioned - BaseCamp posted a notice dialogue box "That map is installed on the PC we recommend you use it" (words to that effect)
but in reality BaseCamp top line menu options showed _nothing_ but the Global map and no address search was available.
so - something somewhere somehow blew up - probably in the uncontrolled automatic "we know best" WiFi updating routines.
I've turned that OFF. frankly my deer, I'd rather know when and how stuff auto-upfails itself.
I cannot say whether BaseCamp will also update maps on the device and the pc in the future. I rather suspect Garmin has made significant changes in "how the Garmin world works" - so, we'll see. I'm going to wipe GarminExpress off the PC - if/when map updates happen the tale will be told.
Yet again you're saying you've used BaseCamp exclusively for updating maps yet haven't installed maps to your PC, which is itself obvious from some of your other statements. I'm afraid that is impossible. Without maps on your PC if you launch MapInstall via BaseCamp there will be no maps to install.
