Wifi not reconnecting

Hello,
2 Z10s (10.1.0.4181 - 10.1.0.4633) on different locations with 2 Fritz!box 7390 on 5Ghz with firmware 5.50. Worked a long time, then maybe 2-3 weeks ago problems started. Tablets are not affected so I suppose its our Z10s fault.
WiFi works, then I leave the location. After returning the connection wont get reestablished. No WiFi Network shown, turning WiFi on and off on the Phone will get me connected again but I dont think manual intervention is a solution. Any Ideas whats going on?
Solved!
Go to Solution.

I´m very unhappy to broadcast my SSID all the time because an old android needs that. Changing to unsecure WEP is definitely not an option.
I deleted my WiFi-Network on the Z10 and set it up again. Nothing. Even tried to switch from 5 GHz to 2,5 GHz. Again no autoreconnect.
I also noticed that sometimes no other networks are showing. After switching off and on my neighbours networks are shown again. But on other times not reconnecting my Z10 shows some of them and after switching off and on there are 2-3 more. Their power is low, so I´m not sure its a rangeproblem.

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Hello marstech,
According to the research, the mapped drive lost issue may be caused by the several possible reasons:
Possible reason1. The problematic client doesn't reconnect to the target share at logon.
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f. Double click on the drive to check.
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Possible Reason3. Fast Logon Optimization is enabled on the clients.
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305293 Description of the Windows XP Professional Fast Logon Optimization feature
http://support.microsoft.com/?id=305293
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http://support.microsoft.com/kb/831998
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http://support.microsoft.com/kb/297684
If the issue still exists on the problematic clients, please also try adding the following registry subkey on the problematic client to check it works.
Steps:
a. Click Start, click Run, type REGEDIT, and then click OK.
b. Locate and click the following registry subkey:
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\NetCache
c. Click Edit, point to New, and then click DWORD Value.
d. Type SilentForcedAutoReconnect , and then press ENTER to name the value.
e. Double-click SilentForcedAutoReconnect .
f. In the Value data box, type 1, and then click OK.
Please feel free to let me know if you have any concen.
Hope the information can be helpful for you.
Thanks and Regards
Scorpio_Milo
MCTS: Windows Vista | Exchange Server 2007
MCITP: Enterprise Support Technician
MCITP: Server & Enterprise Administrator
Microsoft Infrastructure Consultant
Enterprise Service: Solution Architect
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