It's bug 10952: http://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=10952
The notes on that bug say this was fixed in March as of 3.14.4. However, we're running 3.14.4 here, and I have a librarian who still hits this at least once per week. Even so, if your version of Koha is less than 3.14.4, you should update first and report back whether that fixed it for you. Joel Coehoorn Director of Information Technology York College, Nebraska 402.363.5603 jcoeho...@york.edu *The mission of York College is to transform lives through Christ-centered education and to equip students for lifelong service to God, family, and society* On Tue, Jun 24, 2014 at 1:55 PM, Pablo Bianchi <pablo.bian...@gmail.com> wrote: > Hi! > > Librarians complains about a very annoying issue (perhaps a bug): Once in a > while they get this error: > > * Bad Request* > Your browser sent a request that this server could not understand. > Size of a request header field exceeds server limit. > > This happened with Firefox (v23 to v30, either Windows and Linux clients), > from Koha 3.14 to current (for us) 3.16. > I notice Owen Leonard already had this problem (bug #10857 > <http://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=10857>). The > workaround is pretty simple: Just delete all browser cookies (or just Koha > ones). > > I tried to reproduce the error, cleaning cookies and doing some big > searches. Even Koha documentation says they use three cookies ( > http://koha-community.org/faqs/cookies-koha-use/) I ended up with this 6 > cookies that all share this info: > *Host* *myCatalogURL* > *Path* / > *Send for* Any type of connection > *Expires* At end of session > > But different name and content (copied at the end). > > Cookies seems to exceeds the facto limit of 4093 bytes per domain ( > http://browsercookielimits.x64.me/) but no the RFC2109 ( > http://www.ietf.org/rfc/rfc2109.txt) so this shouldn't be a problem... I > tried increasing Apache LimitRequestFieldSize directive without luck. > > Regards, > Pablo > > Name Hc2AHbPF > Content 38871 or BC=38870 or BC=38859 or BC=38863 or BC=38858 or > BC=38869 or BC=38854 or BC=38865 or BC=38868 or BC=38866 or BC=38856 or > BC=38875 or BC=38874 or BC=38853 or BC=38872 or BC=38873 or BC=38867 or > BC=38839 or BC=38880 or BC=38840 or BC=38885 or BC=38886 or BC=38882 or > BC=38886 or BC=38887 or BC=38890 or BC=38891 or BC=38879 or BC=38878 or > BC=38877 or BC=38864 or BC=38855 or BC=38852 or BC=38847 or BC=38846 or > BC=38845 or BC=38843 or BC=38841 or BC=38838 or BC=38837 or BC=38910 > Name LkvXIj08 > Content > > %7B%22offset%22%3A1%2C%22query%22%3A%22q%253Dccl%253DBC%25253D%25252238871%252522%252520or%252520BC%25253D%25252238870%252522%252520or%252520BC%25253D%25252238859%252522%252520or%252520BC%25253D%25252238863%252522%252520or%252520BC%25253D%25252238858%252522%252520or%252520BC%25253D%25252238869%252522%252520or%252520BC%25253D%25252238854%252522%252520or%252520BC%25253D%25252238865%252522%252520or%252520BC%25253D%25252238868%252522%252520or%252520BC%25253D%25252238866%252522%252520or%252520BC%25253D%25252238856%252522%252520or%252520BC%25253D%25252238875%252522%252520or%252520BC%25253D%25252238874%252522%252520or%252520BC%25253D%25252238853%252522%252520or%252520BC%25253D%25252238872%252522%252520or%252520BC%25253D%25252238873%252522%252520or%252520BC%25253D%25252238867%252522%252520or%252520BC%25253D%25252238839%252522%252520or%252520BC%25253D%25252238880%252522%252520or%252520BC%25253D%25252238840%252522%252520or%252520BC%25253D%25252238885%252522%252520or%252520BC%25253D%252522388 86 > > > 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> > 77%2C6736%2C7115%2C8006%2C8181%2C9287%2C11811%2C11813%2C11816%2C11817%2C11818%5D%7D > Name YRAFi4OC > Content > > 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> > > 252520BC%25253D38852%252520or%252520BC%25253D38847%252520or%252520BC%25253D38846%252520or%252520BC%25253D38845%252520or%252520BC%25253D38843%252520or%252520BC%25253D38841%252520or%252520BC%25253D38838%252520or%252520BC%25253D38837%252520or%252520BC%25253D38910%22%2C%22limit%22%3A%22%22%2C%22sort%22%3A%22%22%2C%22pagelen%22%3A20%2C%22results%22%3A%5B560%2C695%2C1997%2C3046%2C3109%2C3399%2C4456%2C5775%2C6399%2C6477%2C6736%2C7115%2C8006%2C8181%2C9287%2C11811%2C11813%2C11816%2C11817%2C11818%5D%7D > Name mEXufDzN > Content > > %7B%22offset%22%3A1%2C%22query%22%3A%22q%253Dccl%253D38871%252520or%252520BC%25253D38870%252520or%252520BC%25253D38859%252520or%252520BC%25253D38863%252520or%252520BC%25253D38858%252520or%252520BC%25253D38869%252520or%252520BC%25253D38854%252520or%252520BC%25253D38865%252520or%252520BC%25253D38868%252520or%252520BC%25253D38866%252520or%252520BC%25253D38856%252520or%252520BC%25253D38875%252520or%252520BC%25253D38874%252520or%252520BC%25253D38853%252520or%252520BC%25253D38872%252520or%252520BC%25253D38873%252520or%252520BC%25253D38867%252520or%252520BC%25253D38839%252520or%252520BC%25253D38880%252520or%252520BC%25253D38840%252520or%252520BC%25253D38885%252520or%252520BC%25253D38886%252520or%252520BC%25253D38882%252520or%252520BC%25253D38886%252520or%252520BC%25253D38887%252520or%252520BC%25253D38890%252520or%252520BC%25253D38891%252520or%252520BC%25253D38879%252520or%252520BC%25253D38878%252520or%252520BC%25253D38877%252520or%252520BC%25253D38864%252520or%252520BC%25253D38855%252520o r% > > > 252520BC%25253D38852%252520or%252520BC%25253D38847%252520or%252520BC%25253D38846%252520or%252520BC%25253D38845%252520or%252520BC%25253D38843%252520or%252520BC%25253D38841%252520or%252520BC%25253D38838%252520or%252520BC%25253D38837%252520or%252520BC%25253D38910%22%2C%22limit%22%3A%22%22%2C%22sort%22%3A%22%22%2C%22pagelen%22%3A20%2C%22results%22%3A%5B560%2C695%2C1997%2C3046%2C3109%2C3399%2C4456%2C5775%2C6399%2C6477%2C6736%2C7115%2C8006%2C8181%2C9287%2C11811%2C11813%2C11816%2C11817%2C11818%5D%7D > Name CGISESSID > Content d6804e5e6a478944bc304b7baa8918a5 > Name 4010859Q > Content > > %7B%22offset%22%3A1%2C%22query%22%3A%22q%253Dccl%253D38871%252520or%252520BC%25253D38870%252520or%252520BC%25253D38859%252520or%252520BC%25253D38863%252520or%252520BC%25253D38858%252520or%252520BC%25253D38869%252520or%252520BC%25253D38854%252520or%252520BC%25253D38865%252520or%252520BC%25253D38868%252520or%252520BC%25253D38866%252520or%252520BC%25253D38856%252520or%252520BC%25253D38875%252520or%252520BC%25253D38874%252520or%252520BC%25253D38853%252520or%252520BC%25253D38872%252520or%252520BC%25253D38873%252520or%252520BC%25253D38867%252520or%252520BC%25253D38839%252520or%252520BC%25253D38880%252520or%252520BC%25253D38840%252520or%252520BC%25253D38885%252520or%252520BC%25253D38886%252520or%252520BC%25253D38882%252520or%252520BC%25253D38886%252520or%252520BC%25253D38887%252520or%252520BC%25253D38890%252520or%252520BC%25253D38891%252520or%252520BC%25253D38879%252520or%252520BC%25253D38878%252520or%252520BC%25253D38877%252520or%252520BC%25253D38864%252520or%252520BC%25253D38855%252520o r% > > > 252520BC%25253D38852%252520or%252520BC%25253D38847%252520or%252520BC%25253D38846%252520or%252520BC%25253D38845%252520or%252520BC%25253D38843%252520or%252520BC%25253D38841%252520or%252520BC%25253D38838%252520or%252520BC%25253D38837%252520or%252520BC%25253D38910%22%2C%22limit%22%3A%22%22%2C%22sort%22%3A%22%22%2C%22pagelen%22%3A20%2C%22results%22%3A%5B560%2C695%2C1997%2C3046%2C3109%2C3399%2C4456%2C5775%2C6399%2C6477%2C6736%2C7115%2C8006%2C8181%2C9287%2C11811%2C11813%2C11816%2C11817%2C11818%5D%7D > > Recursive url-decode of cookies content: > 1) > > %7B%22offset%22%3A1%2C%22query%22%3A%22q%253Dccl%253D38871%252520or%252520BC%25253D38870%252520or%252520BC%25253D38859%252520or%252520BC%25253D38863%252520or%252520BC%25253D38858%252520or%252520BC%25253D38869%252520or%252520BC%25253D38854%252520or%252520BC%25253D38865%252520or%252520BC%25253D38868%252520or%252520BC%25253D38866%252520or%252520BC%25253D38856%252520or%252520BC%25253D38875%252520or%252520BC%25253D38874%252520or%252520BC%25253D38853%252520or%252520BC%25253D38872%252520or%252520BC%25253D38873%252520or%252520BC%25253D38867%252520or%252520BC%25253D38839%252520or%252520BC%25253D38880%252520or%252520BC%25253D38840%252520or%252520BC%25253D38885%252520or%252520BC%25253D38886%252520or%252520BC%25253D38882%252520or%252520BC%25253D38886%252520or%252520BC%25253D38887%252520or%252520BC%25253D38890%252520or%252520BC%25253D38891%252520or%252520BC%25253D38879%252520or%252520BC%25253D38878%252520or%252520BC%25253D38877%252520or%252520BC%25253D38864%252520or%252520BC%25253D38855%252520o r% > > > 252520BC%25253D38852%252520or%252520BC%25253D38847%252520or%252520BC%25253D38846%252520or%252520BC%25253D38845%252520or%252520BC%25253D38843%252520or%252520BC%25253D38841%252520or%252520BC%25253D38838%252520or%252520BC%25253D38837%252520or%252520BC%25253D38910%22%2C%22limit%22%3A%22%22%2C%22sort%22%3A%22%22%2C%22pagelen%22%3A20%2C%22results%22%3A%5B560%2C695%2C1997%2C3046%2C3109%2C3399%2C4456%2C5775%2C6399%2C6477%2C6736%2C7115%2C8006%2C8181%2C9287%2C11811%2C11813%2C11816%2C11817%2C11818%5D%7D > 2) > > {"offset":1,"query":"q%3Dccl%3D38871%2520or%2520BC%253D38870%2520or%2520BC%253D38859%2520or%2520BC%253D38863%2520or%2520BC%253D38858%2520or%2520BC%253D38869%2520or%2520BC%253D38854%2520or%2520BC%253D38865%2520or%2520BC%253D38868%2520or%2520BC%253D38866%2520or%2520BC%253D38856%2520or%2520BC%253D38875%2520or%2520BC%253D38874%2520or%2520BC%253D38853%2520or%2520BC%253D38872%2520or%2520BC%253D38873%2520or%2520BC%253D38867%2520or%2520BC%253D38839%2520or%2520BC%253D38880%2520or%2520BC%253D38840%2520or%2520BC%253D38885%2520or%2520BC%253D38886%2520or%2520BC%253D38882%2520or%2520BC%253D38886%2520or%2520BC%253D38887%2520or%2520BC%253D38890%2520or%2520BC%253D38891%2520or%2520BC%253D38879%2520or%2520BC%253D38878%2520or%2520BC%253D38877%2520or%2520BC%253D38864%2520or%2520BC%253D38855%2520or%2520BC%253D38852%2520or%2520BC%253D38847%2520or%2520BC%253D38846%2520or%2520BC%253D38845%2520or%2520BC%253D38843%2520or%2520BC%253D38841%2520or%2520BC%253D38838%2520or%2520BC%253D38837%2520or%2520BC%253D38910 ", > > > "limit":"","sort":"","pagelen":20,"results":[560,695,1997,3046,3109,3399,4456,5775,6399,6477,6736,7115,8006,8181,9287,11811,11813,11816,11817,11818]} > 3) > > {"offset":1,"query":"q=ccl=38871%20or%20BC%3D38870%20or%20BC%3D38859%20or%20BC%3D38863%20or%20BC%3D38858%20or%20BC%3D38869%20or%20BC%3D38854%20or%20BC%3D38865%20or%20BC%3D38868%20or%20BC%3D38866%20or%20BC%3D38856%20or%20BC%3D38875%20or%20BC%3D38874%20or%20BC%3D38853%20or%20BC%3D38872%20or%20BC%3D38873%20or%20BC%3D38867%20or%20BC%3D38839%20or%20BC%3D38880%20or%20BC%3D38840%20or%20BC%3D38885%20or%20BC%3D38886%20or%20BC%3D38882%20or%20BC%3D38886%20or%20BC%3D38887%20or%20BC%3D38890%20or%20BC%3D38891%20or%20BC%3D38879%20or%20BC%3D38878%20or%20BC%3D38877%20or%20BC%3D38864%20or%20BC%3D38855%20or%20BC%3D38852%20or%20BC%3D38847%20or%20BC%3D38846%20or%20BC%3D38845%20or%20BC%3D38843%20or%20BC%3D38841%20or%20BC%3D38838%20or%20BC%3D38837%20or%20BC%3D38910","limit":"","sort":"","pagelen":20,"results":[560,695,1997,3046,3109,3399,4456,5775,6399,6477,6736,7115,8006,8181,9287,11811,11813,11816,11817,11818]} > 4) {"offset":1,"query":"q=ccl=38871 or BC=38870 or BC=38859 or BC=38863 or > BC=38858 or BC=38869 or BC=38854 or BC=38865 or BC=38868 or BC=38866 or > BC=38856 or BC=38875 or BC=38874 or BC=38853 or BC=38872 or BC=38873 or > BC=38867 or BC=38839 or BC=38880 or BC=38840 or BC=38885 or BC=38886 or > BC=38882 or BC=38886 or BC=38887 or BC=38890 or BC=38891 or BC=38879 or > BC=38878 or BC=38877 or BC=38864 or BC=38855 or BC=38852 or BC=38847 or > BC=38846 or BC=38845 or BC=38843 or BC=38841 or BC=38838 or BC=38837 or > > BC=38910","limit":"","sort":"","pagelen":20,"results":[560,695,1997,3046,3109,3399,4456,5775,6399,6477,6736,7115,8006,8181,9287,11811,11813,11816,11817,11818]} > 5) { > "offset":1, > "query":"q=ccl=38871 or BC=38870 or BC=38859 or BC=38863 or BC=38858 or > BC=38869 or BC=38854 or BC=38865 or BC=38868 or BC=38866 or BC=38856 or > BC=38875 or BC=38874 or BC=38853 or BC=38872 or BC=38873 or BC=38867 or > BC=38839 or BC=38880 or BC=38840 or BC=38885 or BC=38886 or BC=38882 or > BC=38886 or BC=38887 or BC=38890 or BC=38891 or BC=38879 or BC=38878 or > BC=38877 or BC=38864 or BC=38855 or BC=38852 or BC=38847 or BC=38846 or > BC=38845 or BC=38843 or BC=38841 or BC=38838 or BC=38837 or BC=38910", > "limit":"", > "sort":"", > "pagelen":20, > "results":[ > 560, > 695, > 1997, > 3046, > 3109, > 3399, > 4456, > 5775, > 6399, > 6477, > 6736, > 7115, > 8006, > 8181, > 9287, > 11811, > 11813, > 11816, > 11817, > 11818 > ] > } > _______________________________________________ > Koha mailing list http://koha-community.org > Koha@lists.katipo.co.nz > http://lists.katipo.co.nz/mailman/listinfo/koha > _______________________________________________ Koha mailing list http://koha-community.org Koha@lists.katipo.co.nz http://lists.katipo.co.nz/mailman/listinfo/koha