Wifi connection drops multiple times a day

For the past two weeks my laptop started randomly disconnecting from the router, which is getting more annoying by the day. Here is a list of clues I found so far:

• It is no hardware issue: For two days I booted Linux from USB stick and connected with the exact same settings to the same router, worked on my projects as usual and didn’t encounter any connection problems, so neither my laptop nor my router is broken.

• List of events generated with each disconnect: Everytime my laptop spontaneously disconnects I see the exact same events generated under Windows-Protocols/System:

  • Browser service, event ID 8033:

    The browser has forced an election on network “DeviceNetBT_Tcpip_{GUID}” because a master browser was stopped.

  • Diagnostics-Networking, event ID 6100: This event is a long long check list, where every test is passed, but at the end it reads

    Disconnected from BSSID: 00-00-00-00-00-00 Reason: 0x00000205

  • Diagnostics-Networking, event ID 6100:

    The capability of your network adapter does not match the requirement of this network.

    This is funny, because in the previous event there are 3 lines saying that my network adapter’s capability match the profile. My adapter worked for the past two years and I can’t remember changing my network settings.

  • Diagnostics-Networking, event ID 4000:

    The capability of your network adapter does not match the requirement of this network.

    Root cause GUID: “{a5d48b7a-6b63-449f-909d-c239efeb2463}”

    Repair GUID: “{86c9d24e-59ea-437a-9e39-6f7f212664fe}”

  • NETwNb64, event ID 8000, (7036), 7001, 7001:

    No description found for event ID “…”. Stored information:

    DeviceNDMP8

    Intel(R) Dual Band Wireless-AC 7260

    This is odd, because googling this event reveals that most people actually get an event description. Maybe my system misses a library containing this description?

• It doesn’t seem to be any windows update: I uninstalled all windows updates of the last two months (way more than necessary) and yet the problem persists.

• Strange behaviour: To reconnect with my network I have to turn of my network adapter, turn it back on and then try two to five times to connect to my network until it works. For every failed trial all the events above are generated.

I’m out of ideas where to look for more clues. In case this might be useful, I appended some hardware information. Do you guys have any idea, what’s might be wrong with my wifi connection?

• Windows 8.1 x64 with Kaspersky
• Network adapter: Intel Dual Band Wireless-AC 7260
• Driver for network adapter: Intel Dual Band Wireless-AC 7260 version 18.33.6.2 (19 Feb 2017)